Updated on 2025/09/30

写真a

 
UENO TAKAFUMI
 
Organization
School of Life Science and Technology Professor
Title
Professor
External link

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Degree

  • 理学博士 ( 大阪大学 )

Research Interests

  • Bioinorganic Chemistry

  • Protein Engineering

Research Areas

  • Nanotechnology/Materials / Bio chemistry

  • Nanotechnology/Materials / Chemistry and chemical methodology of biomolecules

  • Nanotechnology/Materials / Nanobioscience

  • Nanotechnology/Materials / Inorganic/coordination chemistry

Papers

  • Design of Aromatic Interaction Networks in a Protein Cage Modulated by Fluorescent Ligand Binding. International journal

    Yuki Hishikawa, Taiga Suzuki, Basudev Maity, Hiroki Noya, Michito Yoshizawa, Asuka Asanuma, Yuri Katagiri, Satoshi Abe, Satoru Nagatoishi, Kouhei Tsumoto, Takafumi Ueno

    Advanced science (Weinheim, Baden-Wurttemberg, Germany)   e2417030   2025.2

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    Language:English   Publishing type:Research paper (scientific journal)  

    Dynamic behavior of proteins, such as orientation changes of aromatic residues, plays an important role in controlling biomolecular functions. Protein design that can precisely control such dynamic behavior at the atomic level is a challenging issue. The study reports the development of a system capable of orientational changes of aromatic side chains upon ligand binding. Aromatic pockets are constructed on the inner surfaces of protein cages to bind polycyclic aromatic fluorescent molecules to the targeted position by π-π stacking interactions. X-ray crystal structural analysis indicated the cooperative orientation changes of the aromatic clusters around the pocket triggered by the ligand binding. A comparison of various ligands shows that the movement of aromatic clusters can be controlled depending on the ligand structures. Fluorescence quantum yield and fluorescence lifetime are enhanced due to isolation of the fluorescent molecules in an aromatic pocket. These findings provide an understanding of the unique molecular behavior and fluorescence properties of ligands due to the assembly of aromatic residues and a guideline for developing dynamically controlled supramolecular biomaterials.

    DOI: 10.1002/advs.202417030

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  • An artificial metal-free peroxidase designed using a ferritin cage

    Jiaxin Tian, Basudev Maity, Tadaomi Furuta, Tiezheng Pan, Takafumi Ueno

    2025.2

  • Real-time observation of a metal complex-driven reaction intermediate using a porous protein crystal and serial femtosecond crystallography

    Basudev Maity, Mitsuo Shoji, Fangjia Luo, Takanori Nakane, Satoshi Abe, Shigeki Owada, Jungmin Kang, Kensuke Tono, Rie Tanaka, Thuc Toan Pham, Mariko Kojima, Yuki Hishikawa, Junko Tanaka, Jiaxin Tian, Misaki Nagama, Taiga Suzuki, Hiroki Noya, Yuto Nakasuji, Asuka Asanuma, Xinchen Yao, So Iwata, Yasuteru Shigeta, Eriko Nango, Takafumi Ueno

    Nature Communications   15 ( 1 )   2024.6

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    Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    Abstract

    Determining short-lived intermediate structures in chemical reactions is challenging. Although ultrafast spectroscopic methods can detect the formation of transient intermediates, real-space structures cannot be determined directly from such studies. Time-resolved serial femtosecond crystallography (TR-SFX) has recently proven to be a powerful method for capturing molecular changes in proteins on femtosecond timescales. However, the methodology has been mostly applied to natural proteins/enzymes and limited to reactions promoted by synthetic molecules due to structure determination challenges. This work demonstrates the applicability of TR-SFX for investigations of chemical reaction mechanisms of synthetic metal complexes. We fix a light-induced CO-releasing Mn(CO)3 reaction center in porous hen egg white lysozyme (HEWL) microcrystals. By controlling light exposure and time, we capture the real-time formation of Mn-carbonyl intermediates during the CO release reaction. The asymmetric protein environment is found to influence the order of CO release. The experimentally-observed reaction path agrees with quantum mechanical calculations. Therefore, our demonstration offers a new approach to visualize atomic-level reactions of small molecules using TR-SFX with real-space structure determination. This advance holds the potential to facilitate design of artificial metalloenzymes with precise mechanisms, empowering design, control and development of innovative reactions.

    DOI: 10.1038/s41467-024-49814-9

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    Other Link: https://www.nature.com/articles/s41467-024-49814-9

  • High-throughput structure determination of an intrinsically disordered protein using cell-free protein crystallization

    Mariko Kojima, Satoshi Abe, Tadaomi Furuta, Kunio Hirata, Xinchen Yao, Ayako Kobayashi, Ririko Kobayashi, Takafumi Ueno

    Proceedings of the National Academy of Sciences   121 ( 25 )   2024.6

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    Publishing type:Research paper (scientific journal)   Publisher:Proceedings of the National Academy of Sciences  

    Intrinsically disordered proteins (IDPs) play a crucial role in various biological phenomena, dynamically changing their conformations in response to external environmental cues. To gain a deeper understanding of these proteins, it is essential to identify the determinants that fix their structures at the atomic level. Here, we developed a pipeline for rapid crystal structure analysis of IDP using a cell-free protein crystallization (CFPC) method. Through this approach, we successfully demonstrated the determination of the structure of an IDP to uncover the key determinants that stabilize its conformation. Specifically, we focused on the 11-residue fragment of c-Myc, which forms an α-helix through dimerization with a binding partner protein. This fragment was strategically recombined with an in-cell crystallizing protein and was expressed in a cell-free system. The resulting crystal structures of the c-Myc fragment were successfully determined at a resolution of 1.92 Å and we confirmed that they are identical to the structures of the complex with the native binding partner protein. This indicates that the environment of the scaffold crystal can fix the structure of c-Myc. Significantly, these crystals were obtained directly from a small reaction mixture (30 µL) incubated for only 72 h. Analysis of eight crystal structures derived from 22 mutants revealed two hydrophobic residues as the key determinants responsible for stabilizing the α-helical structure. These findings underscore the power of our CFPC screening method as a valuable tool for determining the structures of challenging target proteins and elucidating the essential molecular interactions that govern their stability.

    DOI: 10.1073/pnas.2322452121

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  • Fusion of amyloid beta with ferritin yields an isolated oligomeric beta-sheet-rich aggregate inside the ferritin cage. International journal

    Basudev Maity, Shiori Kameyama, Jiaxin Tian, Thuc Toan Pham, Satoshi Abe, Eri Chatani, Kazuyoshi Murata, Takafumi Ueno

    Biomaterials science   12 ( 9 )   2408 - 2417   2024.4

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    Language:English   Publishing type:Research paper (scientific journal)  

    Alzheimer's disease is a severe brain condition caused by the formation of amyloid plaques composed of amyloid beta (Aβ) peptides. These peptides form oligomers, protofibrils, and fibrils before deposition into amyloid plaques. Among these intermediates, Aβ oligomers (AβOs) were found to be the most toxic and therefore an appealing target for drug development and understanding their role in the disease. However, precise isolation and characterization of AβOs have proven challenging because AβOs tend to aggregate and form heterogeneous mixtures in solution. As a solution, we genetically fused the Aβ peptide with a ferritin monomer. Such fusion allowed the encapsulation of precisely 24 Aβ peptides inside the 24-mer ferritin cage. Using high-speed atomic force microscopy (HS-AFM), we disassembled ferritin and directly visualized the Aβ core enclosed within the cage. The thioflavin-T assay (ThT) and attenuated total reflection infrared spectroscopy (ATR-IR) revealed the presence of a β-sheet structure in the encapsulated oligomeric aggregate. Gallic acid, an amyloid inhibitor, can inhibit the fluorescence of ThT bound AβOs. Our approach represents a significant advancement in the isolation and characterization of β-sheet rich AβOs and is expected to be useful for future studies of other disordered peptides such as α-synuclein and tau.

    DOI: 10.1039/d4bm00173g

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  • Crystal structure of the in-cell Cry1Aa purified from Bacillus thuringiensis

    Junko Tanaka, Satoshi Abe, Tohru Hayakawa, Mariko Kojima, Keitaro Yamashita, Kunio Hirata, Takafumi Ueno

    Biochemical and Biophysical Research Communications   685   149144 - 149144   2023.12

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    Publishing type:Research paper (scientific journal)   Publisher:Elsevier BV  

    DOI: 10.1016/j.bbrc.2023.149144

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  • Displaying a Protein Cage on a Protein Crystal by In-Cell Crystal Engineering

    Thuc Toan Pham, Satoshi Abe, Koki Date, Kunio Hirata, Taiga Suzuki, Takafumi Ueno

    Nano Letters   23 ( 22 )   10118 - 10125   2023.11

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    Publishing type:Research paper (scientific journal)   Publisher:American Chemical Society (ACS)  

    DOI: 10.1021/acs.nanolett.3c02117

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  • Atomic-Level Insights into a Unique Semi-Clathrate Hydrate Formed in a Confined Environment of Porous Protein Crystal Reviewed

    Basudev Maity, Jiaxin Tian, Tadaomi Furuta, Satoshi Abe, Takafumi Ueno

    Crystal Growth & Design   2023.10

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    Language:English   Publishing type:Research paper (scientific journal)  

    Water behavior on protein surfaces influences the protein structure and function. Antifreeze proteins (AFPs) have been intensively studied in the context of biological cytotechnology. AFPs can inhibit the growth of ice microcrystals by forming unique water cluster networks that are influenced by protein surface morphology and hydrophobicity. One such unique water cluster network has been identified as semi-clathrate structures in crystals and is believed to be stabilized by intermolecular interactions within the confined environment. However, there is little atomic-level information about the process of formation of semi-clathrates and the structural units of water-clathrate networks. We identified a single semi-clathrate formed on the pore surface of ferritin crystal, which has a structure similar to that of a natural AFP. Comparison of ferritin mutants and determination of temperature-dependent structures revealed that semi-clathrate water molecules on an α-helix undergo structural alterations with increasing temperatures. Lowering the temperature regenerates the semi-clathrate structure. Water molecules hydrogen-bonded to main chain carbonyl groups are stably immobilized at room temperature and serve as starting points for clathrate formation. These findings provide a mechanistic understanding of water networks in AFPs and guidelines for designing new cryomaterials.

    DOI: 10.1021/acs.cgd.3c00880

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  • Novel Au(I)-Based Artificial Metallo-Cycloisomerase for Catalyzing the Cycloisomerization of γ-Alkynoic Acids

    Chenlin Lu, Xue Peng, Basudev Maity, Xiang Sheng, Yinhuan Zhou, Takafumi Ueno, Zheng Liu, Diannan Lu

    ACS Catalysis   2023.8

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/acscatal.3c01197

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  • A Protein Needle Facilitates Encapsulation of Target Proteins via In-Cell Protein Crystallization

    Thuc Toan Pham, Satoshi Abe, Kunio Hirata, Kazuhiko Katayama, Takafumi Ueno

    Chemistry Letters   52 ( 9 )   720 - 723   2023.8

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    Publishing type:Research paper (scientific journal)   Publisher:Oxford University Press (OUP)  

    Abstract

    We have established a new method for encapsulating superfold green fluorescent protein (sfGFP) into polyhedra crystal (PhC) with high efficiency using a protein needle (PN). H1-sfGFP-PN, in which PN is fused to the C-terminus of H1-sfGFP, exhibits a 55-fold increase in encapsulation of sfGFP relative to H1-sfGFP with the improvement provided by the synergistic effects of the H1-helix, PN, and the His-tag at the C-terminus of PN. This method is expected to provide useful materials based on encapsulation of various functional proteins.

    DOI: 10.1246/cl.230282

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  • In-Cell Engineering of Protein Crystals into Hybrid Solid Catalysts for Artificial Photosynthesis

    Tiezheng Pan, Basudev Maity, Satoshi Abe, Taiki Morita, Takafumi Ueno

    Nano Letters   23 ( 14 )   6744 - 6751   2023.7

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    Publishing type:Research paper (scientific journal)   Publisher:American Chemical Society (ACS)  

    DOI: 10.1021/acs.nanolett.3c02355

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  • Cross-Linked Crystals of Dirhodium Tetraacetate/RNase A Adduct Can Be Used as Heterogeneous Catalysts

    Domenico Loreto, Basudev Maity, Taiki Morita, Hiroyuki Nakamura, Antonello Merlino, Takafumi Ueno

    Inorganic Chemistry   2023.5

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/acs.inorgchem.3c00852

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  • Elucidating Conformational Dynamics and Thermostability of Designed Aromatic Clusters Using Protein Cages. International journal

    Yuki Hishikawa, Hiroki Noya, Satoru Nagatoishi, Takashi Yoshidome, Basudev Maity, Kouhei Tsumoto, Satoshi Abe, Takafumi Ueno

    Chemistry (Weinheim an der Bergstrasse, Germany)   e202300488   2023.4

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    Aromatic residues form clusters in proteins and play essential roles in biological systems. However, the stabilization mechanism and dynamic behavior of aromatic clusters remain unclear. Here, we describe designed aromatic interactions confined within a protein cage to reveal how aromatic clusters affect protein stability. The crystal structures and calorimetric measurements indicate that the formation of inter-subunit phenylalanine clusters enhance the interactions of inter-helices and increase the melting temperature. Theoretical calculations suggest that this is caused by the transformation of the T-shaped geometry into π-π stacking at high temperatures, and the hydration entropic gain. Thus, the isolated nano-environment in a protein cage allows reconstruction and detailed analysis of multiple clustering residues for elucidating the mechanisms of various biomolecular interactions in nature which can be applied to design of bionanomaterials.

    DOI: 10.1002/chem.202300488

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  • Apo-ferritin-Caged Pt Nanoparticles for Selective Hydrogenation of p-Chloronitrobenzene

    Yinhuan Zhou, Yilin Zheng, Chenlin Lu, Basudev Maity, Yakui Chen, Takafumi Ueno, Zheng Liu, Diannan Lu

    ACS Applied Nano Materials   2023.4

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/acsanm.3c00231

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  • Design of a Hierarchical Assembly at a Solid–Liquid Interface Using an Asymmetric Protein Needle

    Kosuke Kikuchi, Koki Date, Takafumi Ueno

    Langmuir   2023.2

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/acs.langmuir.2c03146

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  • Engineering of an in-cell protein crystal for fastening a metastable conformation of a target miniprotein

    Mariko Kojima, Satoshi Abe, Tadaomi Furuta, Duy Phuoc Tran, Kunio Hirata, Keitaro Yamashita, Yuki Hishikawa, Akio Kitao, Takafumi Ueno

    Biomaterials Science   2023

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    Publishing type:Research paper (scientific journal)   Publisher:Royal Society of Chemistry (RSC)  

    A protein crystal capturing a ten-amino acid miniprotein was constructed in living cells. The miniprotein immobilized in the scaffold crystal was trapped in a metastable state, which is induced by the intermolecular interactions with the scaffold crystal.

    DOI: 10.1039/d2bm01759h

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  • Cell-free protein crystallization for nanocrystal structure determination

    Satoshi Abe, Junko Tanaka, Mariko Kojima, Shuji Kanamaru, Kunio Hirata, Keitaro Yamashita, Ayako Kobayashi, Takafumi Ueno

    Scientific Reports   12 ( 1 )   2022.10

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    Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    Abstract

    In-cell protein crystallization (ICPC) has been investigated as a technique to support the advancement of structural biology because it does not require protein purification and a complicated crystallization process. However, only a few protein structures have been reported because these crystals formed incidentally in living cells and are insufficient in size and quality for structure analysis. Here, we have developed a cell-free protein crystallization (CFPC) method, which involves direct protein crystallization using cell-free protein synthesis. We have succeeded in crystallization and structure determination of nano-sized polyhedra crystal (PhC) at a high resolution of 1.80 Å. Furthermore, nanocrystals were synthesized at a reaction scale of only 20 μL using the dialysis method, enabling structural analysis at a resolution of 1.95 Å. To further demonstrate the potential of CFPC, we attempted to determine the structure of crystalline inclusion protein A (CipA), whose structure had not yet been determined. We added chemical reagents as a twinning inhibitor to the CFPC solution, which enabled us to determine the structure of CipA at 2.11 Å resolution. This technology greatly expands the high-throughput structure determination method of unstable, low-yield, fusion, and substrate-biding proteins that have been difficult to analyze with conventional methods.

    DOI: 10.1038/s41598-022-19681-9

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    Other Link: https://www.nature.com/articles/s41598-022-19681-9

  • Artificial metalloenzymes based on protein assembly Reviewed

    Coordination Chemistry Reviews   2022.8

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    DOI: 10.1016/j.ccr.2022.214593

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  • Design of a gold clustering site in an engineered apo-ferritin cage

    Chenlin Lu, Basudev Maity, Xue Peng, Nozomi Ito, Satoshi Abe, Xiang Sheng, Takafumi Ueno, Diannan Lu

    Communications Chemistry   5 ( 1 )   2022.3

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    Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media {LLC}  

    DOI: 10.1038/s42004-022-00651-1

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  • Controlled Uptake of an Iridium Complex inside Engineered apo‐Ferritin Nanocages: Study of Structure and Catalysis** Reviewed

    Mohd Taher, Basudev Maity, Taiki Nakane, Satoshi Abe, Takafumi Ueno, Shyamalava Mazumdar

    Angewandte Chemie International Edition   61 ( 13 )   2022.3

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    Authorship:Corresponding author   Publishing type:Research paper (scientific journal)   Publisher:Wiley  

    DOI: 10.1002/anie.202116623

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    Other Link: https://onlinelibrary.wiley.com/doi/full-xml/10.1002/anie.202116623

  • Protein Needles Designed to Self‐Assemble through Needle Tip Engineering

    Kosuke Kikuchi, Tatsuya Fukuyama, Takayuki Uchihashi, Tadaomi Furuta, Yusuke T. Maeda, Takafumi Ueno

    Small   18 ( 10 )   2106401 - 2106401   2022.3

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    Publishing type:Research paper (scientific journal)   Publisher:Wiley  

    DOI: 10.1002/smll.202106401

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    Other Link: https://onlinelibrary.wiley.com/doi/full-xml/10.1002/smll.202106401

  • Importance of the Subunit–Subunit Interface in Ferritin Disassembly: A Molecular Dynamics Study

    Zhipeng Li, Basudev Maity, Yuki Hishikawa, Takafumi Ueno, Diannan Lu

    Langmuir   38 ( 3 )   1106 - 1113   2022.1

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    Publishing type:Research paper (scientific journal)   Publisher:American Chemical Society ({ACS})  

    DOI: 10.1021/acs.langmuir.1c02753

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  • Dynamic Behavior of Cargo Proteins Regulated by Linker Peptides on a Protein Needle Scaffold Reviewed

    Que D. Nguyen, Kosuke Kikuchi, Mariko Kojima, Takafumi Ueno

    Chemistry Letters   51 ( 1 )   73 - 76   2022.1

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    Publishing type:Research paper (scientific journal)   Publisher:The Chemical Society of Japan  

    DOI: 10.1246/cl.210599

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  • Engineering of protein crystals for use as solid biomaterials

    Mariko Kojima, Satoshi Abe, Takafumi Ueno

    Biomaterials Science   2022

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1039/D1BM01752G

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  • Solubility enhancement of poorly water soluble domperidone by complexation with the large ring cyclodextrin Reviewed

    Abbas Ismail, Khanittha Kerdpol, Thanyada Rungrotmongkol, Kanitha Tananuwong, Takafumi Ueno, Sanong Ekasit, Nongnuj Muangsin, Kuakarun Krusong

    International Journal of Pharmaceutics   606   120909 - 120909   2021.9

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    Publishing type:Research paper (scientific journal)   Publisher:Elsevier BV  

    DOI: 10.1016/j.ijpharm.2021.120909

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  • Design of an In‐Cell Protein Crystal for the Environmentally Responsive Construction of a Supramolecular Filament

    Satoshi Abe, Thuc Toan Pham, Hashiru Negishi, Keitaro Yamashita, Kunio Hirata, Takafumi Ueno

    Angewandte Chemie International Edition   60 ( 22 )   12341 - 12345   2021.5

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    Publishing type:Research paper (scientific journal)   Publisher:Wiley  

    DOI: 10.1002/anie.202102039

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  • Design of an In‐Cell Protein Crystal for the Environmentally Responsive Construction of a Supramolecular Filament

    Satoshi Abe, Thuc Toan Pham, Hashiru Negishi, Keitaro Yamashita, Kunio Hirata, Takafumi Ueno

    Angewandte Chemie   133 ( 22 )   12449 - 12453   2021.5

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    Publishing type:Research paper (scientific journal)   Publisher:Wiley  

    DOI: 10.1002/ange.202102039

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  • In-Cell Engineering of Protein Crystals with Nanoporous Structures for Promoting Cascade Reactions

    Tien K. Nguyen, Satoshi Abe, Makoto Kasamatsu, Basudev Maity, Keitaro Yamashita, Kunio Hirata, Mariko Kojima, Takafumi Ueno

    ACS Applied Nano Materials   4 ( 2 )   1672 - 1681   2021.2

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    Publishing type:Research paper (scientific journal)   Publisher:American Chemical Society ({ACS})  

    DOI: 10.1021/acsanm.0c03129

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  • The Versatile Manipulations of Self-Assembled Proteins in Vaccine Design

    Que Dan Nguyen, Kosuke Kikuchi, Basudev Maity, Takafumi Ueno

    International Journal of Molecular Sciences   2021.2

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.3390/ijms22041934

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  • Construction of Multistep Catalytic Systems in Protein Assemblies

    Hiroyasu Tabe, Takafumi Ueno

    Cell-Inspired Materials and Engineering   29 - 44   2021

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    Publishing type:Part of collection (book)   Publisher:Springer International Publishing  

    DOI: 10.1007/978-3-030-55924-3_2

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  • Site-Selective Protein Chemical Modification of Exposed Tyrosine Residues Using Tyrosine Click Reaction Reviewed

    Shinichi Sato, Masaki Matsumura, Tetsuya Kadonosono, Satoshi Abe, Takafumi Ueno, Hiroshi Ueda, Hiroyuki Nakamura

    Bioconjugate chemistry   31 ( 5 )   1417 - 1424   2020.5

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/acs.bioconjchem.0c00120

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  • Dynamic behavior of an artificial protein needle contacting a membrane observed by high-speed atomic force microscopy. International journal

    Takafumi Ueno, Kento Niwase, Daisho Tsubokawa, Kosuke Kikuchi, Natsumi Takai, Tadaomi Furuta, Ryuji Kawano, Takayuki Uchihashi

    Nanoscale   12 ( 15 )   8166 - 8173   2020.4

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    Bacteriophage T4 and other bacteriophages have a protein component known as a molecular needle which is used for the transmembrane reaction in the infection process. In this paper, the transmembrane reaction mechanisms of artificial protein needles (PNs) constructed by protein engineering of the component protein of bacteriophage T4 are elucidated by observation of single-molecules by high-speed atomic force microscopy (HS-AFM) and molecular dynamics (MD) simulations. The HS-AFM images indicate that the tip of the needle structure stabilizes the interaction of the needle with the membrane surface and is involved in controlling the contact angle and angular velocity with respect to the membrane. The MD simulations indicate that the dynamic behavior of PN is governed by hydrogen bonds between the membrane phosphate fragments and the tip. Moreover, quartz crystal microbalance (QCM) and electrophysiological experiments indicate that the tip structure of PN affects its kinetic behavior and membrane potential. These results demonstrate that protein assemblies derived from natural biosupramolecules can be used to create nanomaterials with rationally-designed functionality.

    DOI: 10.1039/d0nr01121e

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  • Design of Multinuclear Gold Binding Site at the Two-fold Symmetric Interface of the Ferritin Cage.

    Yuki Hishikawa, Basudev Maity, Nozomi Ito, Satoshi Abe, Diannan Lu, Takafumi Ueno

    Chemistry Letters   2020.4

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  • 人工金属酵素による機能創成

    安部 聡, 上野隆史

    2020.1

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  • Single-molecule level dynamic observation of disassembly of the apo-ferritin cage in solution Reviewed

    Basudev Maity, Zhipeng Li, Kento Niwase, Christian Ganser, Tadaomi Furuta, Takayuki Uchihashi, Diannan Lu, Takafumi Ueno

    Physical Chemistry Chemical Physics   2020

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    Publishing type:Research paper (scientific journal)   Publisher:Royal Society of Chemistry (RSC)  

    <p>The ferritin cage iron-storage protein assembly has been widely used as a template for preparing nanomaterials. This assem-bly has a unique pH-induced disassembly/reassembly mechanism that provides a means for encapsulating...</p>

    DOI: 10.1039/d0cp02069a

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  • Recent progresses in the accumulation of metal ions into the apo-ferritin cage: Experimental and theoretical perspectives

    Basudev Maity, Yuki Hishikawa, Diannan Lu, Takafumi Ueno

    Polyhedron   172   104 - 111   2019.11

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    Authorship:Last author, Corresponding author   Publishing type:Research paper (scientific journal)   Publisher:Elsevier {BV}  

    DOI: 10.1016/j.poly.2019.03.048

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  • Encapsulation of biomacromolecules by soaking and co-crystallization into porous protein crystals of hemocyanin

    Tsubasa Hashimoto, Yuxin Ye, Asuka Matsuno, Yuki Ohnishi, Akira Kitamura, Masataka Kinjo, Satoshi Abe, Takafumi Ueno, Min Yao, Tomohisa Ogawa, Takashi Matsui, Yoshikazu Tanaka

    BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS   509 ( 2 )   577 - 584   2019.2

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    DOI: 10.1016/j.bbrc.2018.12.096

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  • Construction of supramolecular nanotubes from protein crystals Reviewed

    Tien Khanh Nguyen, Hashiru Negishi, Satoshi Abe, Takafumi Ueno

    Chemical Science   10 ( 4 )   1046 - 1051   2019

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    Authorship:Last author, Corresponding author   Publishing type:Research paper (scientific journal)   Publisher:Royal Society of Chemistry ({RSC})  

    <p>Cross-linking of protein crystals promotes disulfide-mediated nanotubes.</p>

    DOI: 10.1039/c8sc04167a

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  • Engineering of protein crystals for development of bionanomaterials

    Tien Khanh Nguyen, Thuc Toan Pham, Takafumi Ueno

    Japanese Journal of Applied Physics   58   2019

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Institute of Physics Publishing  

    DOI: 10.7567/1347-4065/ab1399

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  • Coordination design of cadmium ions at the 4-fold axis channel of the apo-ferritin cage Reviewed

    Satoshi Abe, Nozomi Ito, Basudev Maity, Chenlin Lu, Diannan Lu, Takafumi Ueno

    Dalton Transactions   48 ( 26 )   9759 - 9764   2019

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    Authorship:Last author, Corresponding author   Publishing type:Research paper (scientific journal)   Publisher:Royal Society of Chemistry ({RSC})  

    <p>Construction and X-ray structure analysis of Cd(ii) binding sites at the 4-fold symmetric hydrophobic channel of apo-ferritin by introduction of Cys residues.</p>

    DOI: 10.1039/C9DT00609E

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  • Tailoring Organometallic Complexes into Protein Scaffolds: Structures and Functions

    Takafumi Ueno

    Advances in Bioorganometallic Chemistry   329 - 346   2018.12

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    Authorship:Last author, Corresponding author   Publishing type:Part of collection (book)   Publisher:Elsevier  

    DOI: 10.1016/b978-0-12-814197-7.00016-9

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  • Photocatalytic hydrogen evolution systems constructed in cross-linked porous protein crystals Reviewed

    Hiroyasu Tabe, Hikaru Takahashi, Takuya Shimoi, Satoshi Abe, Takafumi Ueno, Yusuke Yamada

    APPLIED CATALYSIS B-ENVIRONMENTAL   237   1124 - 1129   2018.12

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.apcatb.2018.01.046

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  • Raman spectroscopy insight into Norovirus encapsulation in Bombyx mori cypovirus cubic microcrystals Reviewed

    Hajime Mori, Naoki Oda, Satoshi Abe, Takafumi Ueno, Wenliang Zhu, Chris Pernstich, Giuseppe Pezzotti

    Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy   203   19 - 30   2018.10

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.saa.2018.05.066

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  • Photoinduced in Vivo Magnetic Resonance Imaging (MRI) with Rapid CO Release from an MnCO-Protein Needle Composite. Reviewed International journal

    Hyodo F, Sho T, Maity B, Fujita K, Tachibana Y, Akashi S, Mano M, Hishikawa Y, Matsuo M, Ueno T

    Chemistry (Weinheim an der Bergstrasse, Germany)   24 ( 45 )   11578 - 11583   2018.8

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    DOI: 10.1002/chem.201802445

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  • Engineering of protein assemblies within cells Reviewed

    Tien K Nguyen, Takafumi Ueno

    Current Opinion in Structural Biology   51   1 - 8   2018.8

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    DOI: 10.1016/j.sbi.2017.12.005

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  • 人工金属酵素の次世代設計

    上野 隆史

    2018.8

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  • Artificial bio-nanomachines based on protein needles derived from bacteriophage T4 Reviewed

    Hiroshi Inaba, Takafumi Ueno

    Biophysical Reviews   10 ( 2 )   641 - 658   2018.4

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    Language:English   Publisher:Springer Verlag  

    DOI: 10.1007/s12551-017-0336-9

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  • Functionalization of protein crystals with metal ions, complexes and nanoparticles Reviewed

    Satoshi Abe, Basudev Maity, Takafumi Ueno

    Current Opinion in Chemical Biology   43   68 - 76   2018.4

  • Improved efficiency of nanoneedle insertion by modification with a cell-puncturing protein Reviewed

    Seunghwan Ryu, Yuta Matsumoto, Takahiro Matsumoto, Takafumi Ueno, Yaron R. Silberberg, Chikashi Nakamura

    Japanese Journal of Applied Physics   57 ( 3 )   2018.3

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    DOI: 10.7567/JJAP.57.03EB02

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  • Structure of in cell protein crystals containing organometallic complexes Reviewed

    Satoshi Abe, Kohei Atsumi, Keitaro Yamashita, Kunio Hirata, Hajime Mori, Takafumi Ueno

    Physical Chemistry Chemical Physics   20 ( 5 )   2986 - 2989   2018.2

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    DOI: 10.1039/c7cp06651a

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  • Supramolecular protein cages constructed from a crystalline protein matrix Reviewed

    Hashiru Negishi, Satoshi Abe, Keitaro Yamashita, Kunio Hirata, Kento Niwase, Marion Boudes, Fasséli Coulibaly, Hajime Mori, Takafumi Ueno

    Chemical Communications   54 ( 16 )   1988 - 1991   2018

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    DOI: 10.1039/c7cc08689j

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  • Design of Bioinorganic Materials at the Interface of Coordination and Biosupramolecular Chemistry Reviewed

    Basudev Maity, Takafumi Ueno

    CHEMICAL RECORD   17 ( 4 )   383 - 398   2017.4

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  • Observation of gold sub-nanocluster nucleation within a crystalline protein cage Reviewed

    Basudev Maity, Satoshi Abe, Takafumi Ueno

    NATURE COMMUNICATIONS   8   14820   2017.3

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    DOI: 10.1038/ncomms14820

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  • Crystal Engineering of Self-Assembled Porous Protein Materials in Living Cells Reviewed

    Satoshi Abe, Hiroyasu Tabe, Hiroshi Ijiri, Keitaro Yamashita, Kunio Hirata, Kohei Atsumi, Takuya Shimoi, Masaki Akai, Hajime Mori, Susumu Kitagawa, Takafumi Ueno

    ACS NANO   11 ( 3 )   2410 - 2419   2017.3

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    DOI: 10.1021/acsnano.6b06099

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  • A Photoactive Carbon-Monoxide-Releasing Protein Cage for Dose-Regulated Delivery in Living Cells Reviewed

    Kenta Fujita, Yuya Tanaka, Satoshi Abe, Takafumi Ueno

    ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   55 ( 3 )   1056 - 1060   2016.1

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    DOI: 10.1002/anie.201506738

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  • Design of a confined environment using protein cages and crystals for the development of biohybrid materials Reviewed

    Satoshi Abe, Basudev Maity, Takafumi Ueno

    CHEMICAL COMMUNICATIONS   52 ( 39 )   6496 - 6512   2016

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    DOI: 10.1039/c6cc01355d

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  • Photoactivatable CO release from engineered protein crystals to modulate NF-kappa B activation Reviewed

    Hiroyasu Tabe, Takuya Shimoi, Marion Boudes, Satoshi Abe, Fasseli Coulibaly, Susumu Kitagawa, Hajime Mori, Takafumi Ueno

    CHEMICAL COMMUNICATIONS   52 ( 24 )   4545 - 4548   2016

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    DOI: 10.1039/c5cc10440h

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  • Immobilization of two organometallic complexes into a single cage to construct protein-based microcompartments Reviewed

    Basudev Maity, Kazuki Fukumori, Satoshi Abe, Takafumi Ueno

    CHEMICAL COMMUNICATIONS   52 ( 31 )   5463 - 5466   2016

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    DOI: 10.1039/c6cc00679e

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  • Design of Enzyme-Encapsulated Protein Containers by In Vivo Crystal Engineering Reviewed

    Satoshi Abe, Hiroshi Ijiri, Hashiru Negishi, Hiroyuki Yamanaka, Katsuhito Sasaki, Kunio Hirata, Hajime Mori, Takafumi Ueno

    ADVANCED MATERIALS   27 ( 48 )   7951 - 7956   2015.12

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    DOI: 10.1002/adma.201503827

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  • A metal carbonyl-protein needle composite designed for intracellular CO delivery to modulate NF-κB activity. Reviewed International journal

    Hiroshi Inaba, Nusrat J M Sanghamitra, Kenta Fujita, Takeya Sho, Takahiro Kuchimaru, Susumu Kitagawa, Shinae Kizaka-Kondoh, Takafumi Ueno

    Molecular bioSystems   11 ( 11 )   3111 - 8   2015.11

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  • Use of the confined spaces of apo-ferritin and virus capsids as nanoreactors for catalytic reactions Reviewed

    Basudev Maity, Kenta Fujita, Takafumi Ueno

    CURRENT OPINION IN CHEMICAL BIOLOGY   25   88 - 97   2015.4

  • Design of a CO-releasing Extracellular Scaffold Using in Vivo Protein Crystals Reviewed

    Hiroyasu Tabe, Takuya Shimoi, Kenta Fujita, Satoshi Abe, Hiroshi Ijiri, Masahiko Tsujimoto, Takahiro Kuchimaru, Shinae Kizaka-Kondo, Hajime Mori, Susumu Kitagawa, Takafumi Ueno

    CHEMISTRY LETTERS   44 ( 3 )   342 - 344   2015.3

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    DOI: 10.1246/cl.141035

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  • Preparation of a cross-linked porous protein crystal containing Ru carbonyl complexes as a CO-releasing extracellular scaffold. Reviewed International journal

    Hiroyasu Tabe, Kenta Fujita, Satoshi Abe, Masahiko Tsujimoto, Takahiro Kuchimaru, Shinae Kizaka-Kondoh, Mikio Takano, Susumu Kitagawa, Takafumi Ueno

    Inorganic chemistry   54 ( 1 )   215 - 20   2015.1

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  • Special Issue: Artificial Metalloenzymes Reviewed

    Takafumi Ueno

    ISRAEL JOURNAL OF CHEMISTRY   55 ( 1 )   13 - 13   2015.1

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  • Surface Functionalization of Protein Crystals with Carbohydrate Using Site-selective Bioconjugation Reviewed

    Satoshi Abe, Yu Tokura, Rita Pal, Naoko Komura, Akihiro Imamura, Kaori Matsumoto, Hiroshi Ijiri, Nusrat J. M. Sanghamitra, Hiroyasu Tabe, Hiromune Ando, Makoto Kiso, Hajime Mori, Susumu Kitagawa, Takafumi Ueno

    CHEMISTRY LETTERS   44 ( 1 )   29 - 31   2015.1

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    DOI: 10.1246/cl.140865

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  • Protein Needles as Molecular Templates for Artificial Metalloenzymes Reviewed

    Hiroshi Inaba, Susumu Kitagawa, Takafumi Ueno

    ISRAEL JOURNAL OF CHEMISTRY   55 ( 1 )   40 - 50   2015.1

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  • Cover Picture: Special Issue: Artificial Metalloenzymes (Isr. J. Chem. 1/2015)

    Takafumi Ueno

    Israel Journal of Chemistry   55 ( 1 )   1 - 1   2015.1

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    DOI: 10.1002/ijch.201590000

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  • Design of protein crystals in the development of solid biomaterials Reviewed

    Satoshi Abe, Takafumi Ueno

    RSC ADVANCES   5 ( 27 )   21366 - 21375   2015

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  • Construction of an enterobactin analogue with symmetrically arranged monomer subunits of ferritin Reviewed

    Hiroshi Nakajima, Mio Kondo, Taiki Nakane, Satoshi Abe, Takahiro Nakao, Yoshihito Watanabe, Takafumi Ueno

    CHEMICAL COMMUNICATIONS   51 ( 93 )   16609 - 16612   2015

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  • Design of biomaterials for intracellular delivery of carbon monoxide Reviewed

    Hiroshi Inaba, Kenta Fujita, Takafumi Ueno

    BIOMATERIALS SCIENCE   3 ( 11 )   1423 - 1438   2015

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  • Intracellular CO release from composite of ferritin and ruthenium carbonyl complexes. Reviewed International journal

    Kenta Fujita, Yuya Tanaka, Takeya Sho, Shuichi Ozeki, Satoshi Abe, Tatsuo Hikage, Takahiro Kuchimaru, Shinae Kizaka-Kondoh, Takafumi Ueno

    Journal of the American Chemical Society   136 ( 48 )   16902 - 8   2014.12

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  • Intracellular Protein Delivery System with Protein Needle-GFP Construct Reviewed

    Hiroshi Inaba, Nusrat J. M. Sanghamitra, Toshihiro Fukai, Takahiro Matsumoto, Kaname Nishijo, Shuji Kanamaru, Fumio Arisaka, Susumu Kitagawa, Takafumi Ueno

    CHEMISTRY LETTERS   43 ( 9 )   1505 - 1507   2014.9

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  • Porous Protein Crystals as Catalytic Vessels for Organometallic Complexes Reviewed

    Hiroyasu Tabe, Satoshi Abe, Tatsuo Hikage, Susumu Kitagawa, Takafumi Ueno

    CHEMISTRY-AN ASIAN JOURNAL   9 ( 5 )   1373 - 1378   2014.5

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    DOI: 10.1002/asia.201301347

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  • Cover Picture: Porous Protein Crystals as Catalytic Vessels for Organometallic Complexes (Chem. Asian J. 5/2014) Reviewed

    Hiroyasu Tabe, Satoshi Abe, Tatsuo Hikage, Susumu Kitagawa, Takafumi Ueno

    Chemistry - An Asian Journal   9 ( 5 )   1193   2014.4

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    DOI: 10.1002/asia.201490012

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  • Plasma membrane translocation of a protein needle based on a triple-stranded beta-helix motif Reviewed

    Nusrat J. M. Sanghamitra, Hiroshi Inaba, Fumio Arisaka, Dan Ohtan Wang, Shuji Kanamaru, Susumu Kitagawa, Takafumi Ueno

    MOLECULAR BIOSYSTEMS   10 ( 10 )   2677 - 2683   2014

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    DOI: 10.1039/c4mb00293h

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  • ChemInform Abstract: Porous Protein Crystals as Reaction Vessels

    Takafumi Ueno

    ChemInform   Vol. 44 ( No. 42 )   2013.10

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    DOI: 10.1002/chin.201342260

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  • ChemInform Abstract: Artificial Metalloenzymes Constructed from Hierarchically-Assembled Proteins Reviewed

    Takafumi Ueno, Hiroyasu Tabe, Yuya Tanaka

    ChemInform   44 ( 42 )   no   2013.10

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    DOI: 10.1002/chin.201342264

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  • Artificial Metalloenzymes Constructed From Hierarchically-Assembled Proteins Reviewed

    Takafumi Ueno, Hiroyasu Tabe, Yuya Tanaka

    CHEMISTRY-AN ASIAN JOURNAL   8 ( 8 )   1646 - 1660   2013.8

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  • Porous Protein Crystals as Reaction Vessels Reviewed

    Takafumi Ueno

    CHEMISTRY-A EUROPEAN JOURNAL   19 ( 28 )   9096 - 9102   2013.7

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    DOI: 10.1002/chem.201300250

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  • Catalytic Reactions Promoted in Protein Assembly Cages

    Takafumi Ueno, Satoshi Abe

    Coordination Chemistry in Protein Cages   175 - 202   2013.4

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    DOI: 10.1002/9781118571811.ch7

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  • Inorganic Design of Protein Assemblies as Supramolecular Platforms Reviewed

    Nusrat J. M. Sanghamitra, Hiroshi Inaba, Susumu Kitagawa, Takafumi Ueno

    JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS   23 ( 1 )   50 - 60   2013.1

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  • Coordination Chemistry in Self-Assembly Proteins

    Takafumi Ueno

    SpringerBriefs in Molecular Science   61 - 68   2013

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Part of collection (book)   Publisher:METAL-MOLECULAR ASSEMBLY FOR FUNCTIONAL MATERIALS  

    DOI: 10.1007/978-4-431-54370-1_7

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  • Expanding coordination chemistry from protein to protein assembly Reviewed

    Nusrat J. M. Sanghamitra, Takafumi Ueno

    CHEMICAL COMMUNICATIONS   49 ( 39 )   4114 - 4126   2013

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  • Metal–Molecular Assembly for Functional Materials

    Takafumi Ueno

    2013

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    DOI: 10.1007/978-4-431-54370-1

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  • Catalytic Mechanism in Artificial Metalloenzyme: QM/MM Study of Phenylacetylene Polymerization by Rhodium Complex Encapsulated in apo-Ferritin Reviewed

    Zhuofeng Ke, Satoshi Abe, Takafumi Ueno, Keiji Morokuma

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   134 ( 37 )   15418 - 15429   2012.9

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  • Porous Protein Crystals as Reaction Vessels for Controlling Magnetic Properties of Nanoparticles Reviewed

    Satoshi Abe, Masahiko Tsujimoto, Ko Yoneda, Masaaki Ohba, Tatsuo Hikage, Mikio Takano, Susumu Kitagawa, Takafumi Ueno

    SMALL   8 ( 9 )   1314 - 1319   2012.5

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    DOI: 10.1002/smll.201101866

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  • Stability and activity of enzymes in ionic liquids Reviewed

    Nusrat J. M. Sanghamitra, Takafumi Ueno

    Green Solvents II: Properties and Applications of Ionic Liquids   235 - 273   2012.1

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    DOI: 10.1007/978-94-007-2891-2_10

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  • Semi-synthesis of an artificial scandium(III) enzyme with a beta-helical bio-nanotube Reviewed

    Hiroshi Inaba, Shuji Kanamaru, Fumio Arisaka, Susumu Kitagawa, Takafumi Ueno

    DALTON TRANSACTIONS   41 ( 37 )   11424 - 11427   2012

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    DOI: 10.1039/c2dt31030a

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  • Construction of biocatalysts using the myoglobin scaffold for the synthesis of indigo from indole Reviewed

    Jiakun Xu, Osami Shoji, Takashi Fujishiro, Takahiro Ohki, Takafumi Ueno, Yoshihito Watanabe

    CATALYSIS SCIENCE & TECHNOLOGY   2 ( 4 )   739 - 744   2012

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    DOI: 10.1039/c2cy00427e

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  • Rh-Catalyzed Polymerization of Phenylacetylene: Theoretical Studies of the Reaction Mechanism, Regioselectivity, and Stereoregularity Reviewed

    Zhuofeng Ke, Satoshi Abe, Takafumi Ueno, Keiji Morokuma

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   133 ( 20 )   7926 - 7941   2011.5

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    DOI: 10.1021/ja2012565

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  • Post-Crystal Engineering of Zinc-Substituted Myoglobin to Construct a Long-Lived Photoinduced Charge-Separation System Reviewed

    Tomomi Koshiyama, Masanobu Shirai, Tatsuo Hikage, Hiroyasu Tabe, Koichiro Tanaka, Susumu Kitagawa, Takafumi Ueno

    Angewandte Chemie   123 ( 21 )   4951   2011.4

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    DOI: 10.1002/ange.201008004

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  • Dual modification of a triple-stranded beta-helix nanotube with Ru and Re metal complexes to promote photocatalytic reduction of CO2 Reviewed

    Norihiko Yokoi, Yuki Miura, Chen-Yuang Huang, Nobuyuki Takatani, Hiroshi Inaba, Tomomi Koshiyama, Shuji Kanamaru, Fumio Arisaka, Yoshihito Watanabe, Susumu Kitagawa, Takafumi Ueno

    CHEMICAL COMMUNICATIONS   47 ( 7 )   2074 - 2076   2011

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    DOI: 10.1039/c0cc03015e

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  • Incorporation of organometallic Ru complexes into apo-ferritin cage Reviewed

    Yusuke Takezawa, Philipp Boeckmann, Naoki Sugi, Ziyue Wang, Satoshi Abe, Tatsuya Murakami, Tatsuo Hikage, Gerhard Erker, Yoshihito Watanabe, Susumu Kitagawa, Takafumi Ueno

    DALTON TRANSACTIONS   40 ( 10 )   2190 - 2195   2011

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  • Definite coordination arrangement of organometallic palladium complexes accumulated on the designed interior surface of apo-ferritin Reviewed

    Ziyue Wang, Yusuke Takezawa, Hiroki Aoyagi, Satoshi Abe, Tatsuo Hikage, Yoshihito Watanabe, Susumu Kitagawa, Takafumi Ueno

    CHEMICAL COMMUNICATIONS   47 ( 1 )   170 - 172   2011

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    DOI: 10.1039/c0cc02221g

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  • Post-Crystal Engineering of Zinc-Substituted Myoglobin to Construct a Long-Lived Photoinduced Charge-Separation System Reviewed

    Tomomi Koshiyama, Masanobu Shirai, Tatsuo Hikage, Hiroyasu Tabe, Koichiro Tanaka, Susumu Kitagawa, Takafumi Ueno

    ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   50 ( 21 )   4849 - 4852   2011

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    DOI: 10.1002/anie.201008004

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  • Construction of Robust Bio-nanotubes using the Controlled Self-Assembly of Component Proteins of Bacteriophage T4 Reviewed

    Norihiko Yokoi, Hiroshi Inaba, Makoto Terauchi, Adam Z. Stieg, Nusrat J. M. Sanghamitra, Tomomi Koshiyama, Katsuhide Yutani, Shuji Kanamaru, Fumio Arisaka, Tatsuo Hikage, Atsuo Suzuki, Takashi Yamane, James K. Gimzewski, Yoshihito Watanabe, Susumu Kitagawa, Takafumi Ueno

    SMALL   6 ( 17 )   1873 - 1879   2010.9

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    DOI: 10.1002/smll.201000772

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  • Mechanism of Accumulation and Incorporation of Organometallic Pd Complexes into the Protein Nanocage of apo-Ferritin Reviewed

    Satoshi Abe, Tatsuo Hikage, Yoshihito Watanabe, Susumu Kitagawa, Takafumi Ueno

    INORGANIC CHEMISTRY   49 ( 15 )   6967 - 6973   2010.8

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    DOI: 10.1021/ic1003758

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  • Protein-Engineering: ein Metalloprotein als bioanorganisches Struktur- und Funktionsmodell

    Takafumi Ueno

    Angewandte Chemie   122 ( 23 )   3958 - 3959   2010.4

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    DOI: 10.1002/ange.201000337

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  • Modification of Porous Protein Crystals in Development of Biohybrid Materials Reviewed

    Tomomi Koshiyama, Naomi Kawaba, Tatsuo Hikage, Masanobu Shirai, Yuki Miura, Cheng-Yuan Huang, Koichiro Tanaka, Yoshihito Watanabe, Takafumi Ueno

    BIOCONJUGATE CHEMISTRY   21 ( 2 )   264 - 269   2010.2

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    DOI: 10.1021/bc9003052

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  • Elucidation of Metal-Ion Accumulation Induced by Hydrogen Bonds on Protein Surfaces by Using Porous Lysozyme Crystals Containing Rh-III Ions as the Model Surfaces Reviewed

    Takafumi Ueno, Satoshi Abe, Tomomi Koshiyama, Takahiro Ohki, Tatsuo Hikage, Yoshihito Watanabe

    CHEMISTRY-A EUROPEAN JOURNAL   16 ( 9 )   2730 - 2740   2010

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    DOI: 10.1002/chem.200903269

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  • An Engineered Metalloprotein as a Functional and Structural Bioinorganic Model System Reviewed

    Takafumi Ueno

    ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   49 ( 23 )   3868 - 3869   2010

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  • Polymerization of Phenylacetylene by Rhodium Complexes within a Discrete Space of apo-Ferritin Reviewed

    Satoshi Abe, Kunio Hirata, Takafumi Ueno, Kazuhide Morino, Nobutaka Shimizu, Masaki Yamamoto, Masaki Takata, Eiji Yashima, Yoshihito Watanabe

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   131 ( 20 )   6958 - +   2009.5

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    DOI: 10.1021/ja901234j

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  • Process of Accumulation of Metal Ions on the Interior Surface of apo-Ferritin: Crystal Structures of a Series of apo-Ferritins Containing Variable Quantities of Pd(II) Ions Reviewed

    Takafumi Ueno, Mizue Abe, Kunio Hirata, Satoshi Abe, Masako Suzuki, Nobutaka Shimizu, Masaki Yamamoto, Masaki Takata, Yoshihito Watanabe

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   131 ( 14 )   5094 - 5100   2009.4

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    DOI: 10.1021/ja806688s

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  • Artificial Metalloproteins Exploiting Vacant Space: Preparation, Structures, and Functions

    Satoshi Abe, Takafumi Ueno, Yoshihito Watanabe

    Bio-inspired Catalysts   25 - 43   2009

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    DOI: 10.1007/978-3-540-87757-8_2

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  • Preparation and catalytic reaction of Au/Pd bimetallic nanoparticles in Apo-ferritin Reviewed

    Masako Suzuki, Mizue Abe, Takafumi Ueno, Satoshi Abe, Toshiaki Goto, Yumio Toda, Tomoki Akita, Yusuke Yamadae, Yoshihito Watanabe

    CHEMICAL COMMUNICATIONS   ( 32 )   4871 - 4873   2009

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    DOI: 10.1039/b908742g

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  • Construction of an energy transfer system in the bio-nanocup space by heteromeric assembly of gp27 and gp5 proteins isolated from bacteriophage T4 Reviewed

    Tomomi Koshiyama, Takafumi Ueno, Shuji Kanamaru, Fumio Arisaka, Yoshihito Watanabe

    ORGANIC & BIOMOLECULAR CHEMISTRY   7 ( 12 )   2649 - 2654   2009

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    DOI: 10.1039/b904297k

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  • Control of the coordination structure of organometallic palladium complexes in an apo-ferritin cage Reviewed

    Satoshi Abe, Jochen Niemeyer, Mizue Abe, Yusuke Takezawa, Takafumi Ueno, Tatsuo Hikage, Gerhard Erker, Yoshihito Watanabe

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   130 ( 32 )   10512 - +   2008.8

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  • Molecular engineering of myoglobin: Influence of residue 68 on the rate and the enantioselectivity of oxidation reactions catalyzed by H64D/V68X myoglobin (vol 42, pg 10174, 2003) Reviewed

    Hui-Jun Yang, Toshitaka Matsui, Shin-ichi Ozaki, Shigeru Kato, Takafumi Ueno, George N. Phillips, Shunichi Fuku-zumi, Yoshihito Watanabe

    BIOCHEMISTRY   47 ( 8 )   2700 - 2700   2008.2

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  • Molecular design of heteroprotein assemblies providing a bionanocup as a chemical reactor Reviewed

    Tomomi Koshiyama, Norihiko Yokoi, Takafumi Ueno, Shuji Kanamaru, Shingo Nagano, Yoshitsugit Shiro, Fumio Arisaka, Yoshihito Watanabe

    SMALL   4 ( 1 )   50 - 54   2008.1

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  • Ligand design for the improvement of stability of metal complex.protein hybrids Reviewed

    Norihiko Yokoi, Takafumi Ueno, Masaki Unno, Toshitaka Matsui, Masao Ikeda-Saito, Yoshihito Watanabe

    CHEMICAL COMMUNICATIONS   ( 2 )   229 - 231   2008

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    DOI: 10.1039/b713468a

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  • Functionalization of viral protein assemblies by self-assembly reactions Reviewed

    Takafumi Ueno

    JOURNAL OF MATERIALS CHEMISTRY   18 ( 32 )   3741 - 3745   2008

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    DOI: 10.1039/b806296j

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  • Design of Protein Scaffolds for Chemical Reactions Catalyzed by Metal Complexes and Nanoparticles Reviewed

    Takafumi Ueno

    Bulletin of Japan Society of Coordination Chemistry   51   20 - 30   2008

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    In recent years, efforts to design protein monomers and assemblies conjugated with metal complexes have attracted much attention in the field of coordination chemistry because protein scaffolds provide precise coordination spaces. While several researchers have reported modifications in spherical- and tube-like proteins with metal complexes, it is still difficult to control the coordination properties of the metal complexes attached to the proteins. The author has succeeded in the functionalization of protein scaffolds, such as myoglobin, ferritin, and component proteins isolated from bacteriophage T4, by precise conjugations of various metal complexes. This account describes my recent research studies involving preparation of metal complexes/protein composites, their crystal structures, and the molecular design of bio-inspired systems encompassing catalysts, electrochemistry, and inorganic materials using the protein scaffolds.

    DOI: 10.4019/bjscc.51.20

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  • Noncovalent insertion of ferrocenes into the protein shell of apo-ferritin Reviewed

    Jochen Niemeyer, Satoshi Abe, Tatsuo Hikage, Takafumi Ueno, Gerhard Erker, Yoshihito Watanabe

    CHEMICAL COMMUNICATIONS   ( 48 )   6519 - 6521   2008

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  • Crystal structure based design of functional metal/protein hybrids Reviewed

    Takafumi Ueno, Norihiko Yokoi, Satoshi Abe, Yoshihito Watanabe

    JOURNAL OF INORGANIC BIOCHEMISTRY   101 ( 11-12 )   1667 - 1675   2007.11

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    DOI: 10.1016/j.jinorgbio.2007.06.025

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  • Coordination design of artificial metalloproteins utilizing protein vacant space Reviewed

    Takafumi Ueno, Satoshi Abe, Norihiko Yokoi, Yoshihito Watanabe

    COORDINATION CHEMISTRY REVIEWS   251 ( 21-24 )   2717 - 2731   2007.11

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  • Incorporation of a phebox rhodium complex into apo-myoglobin affords a stable organometallic protein showing unprecedented arrangement of the complex in the cavity Reviewed

    Yuh Satake, Satoshi Abe, Seiji Okazaki, Noritaka Ban, Tatsuo Hikage, Takafumi Ueno, Hiroshi Nakajima, Atsuo Suzuki, Takashi Yamane, Hisao Nishiyama, Yoshihito Watanabe

    ORGANOMETALLICS   26 ( 20 )   4904 - 4908   2007.9

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    DOI: 10.1021/om700471a

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  • Reactivities of oxo and peroxo intermediates studied by hemoprotein mutants Reviewed

    Yoshihito Watanabe, Hiroshi Nakajima, Takafumi Ueno

    ACCOUNTS OF CHEMICAL RESEARCH   40 ( 7 )   554 - 562   2007.7

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  • Design and structure analysis of artificial metalloproteins: Selective coordination of his64 to copper complexes with square-planar structure in the apo-myoglobin scaffold Reviewed

    Satoshi Abe, Takafumi Ueno, Pattubala A. N. Reddy, Seiji Okazaki, Tatsuo Hikage, Atsuo Suzuki, Takashi Yamane, Hiroshi Nakajima, Yoshihito Watanabe

    INORGANIC CHEMISTRY   46 ( 13 )   5137 - 5139   2007.6

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    DOI: 10.1021/ic070289m

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  • Design of artificial metalloenzymes using non-covalent insertion of a metal complex into a protein scaffold Reviewed

    Takafumi Ueno, Tomomi Koshiyama, Satoshi Abe, Norihiko Yokoi, Masataka Ohashi, Hiroshi Nakajima, Yoshihito Watanabe

    Journal of Organometallic Chemistry   692 ( 1-3 )   142 - 147   2007.1

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    DOI: 10.1016/j.jorganchem.2006.08.043

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  • Bionanotube Tetrapod Assembly by In Situ Synthesis of a Gold Nanocluster with (Gp5–His6)3 from Bacteriophage T4 Reviewed

    Takafumi Ueno, Tomomi Koshiyama, Toshimitsu Tsuruga, Toshiaki Goto, Shuji Kanamaru, Fumio Arisaka, Yoshihito Watanabe

    Angewandte Chemie International Edition   45 ( 27 )   4508 - 4512   2006.7

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    DOI: 10.1002/anie.200504588

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  • Design of metal cofactors activated by a protein–protein electron transfer system Reviewed

    Takafumi Ueno, Norihiko Yokoi, Masaki Unno, Toshitaka Matsui, Yuichi Tokita, Masako Yamada, Masao Ikeda-Saito, Hiroshi Nakajima, Yoshihito Watanabe

    Proceedings of the National Academy of Sciences   103 ( 25 )   9416 - 9421   2006.6

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    Protein-to-protein electron transfer (ET) is a critical process in biological chemistry for which fundamental understanding is expected to provide a wealth of applications in biotechnology. Investigations of protein–protein ET systems in reductive activation of artificial cofactors introduced into proteins remains particularly challenging because of the complexity of interactions between the cofactor and the system contributing to ET. In this work, we construct an artificial protein–protein ET system, using heme oxygenase (HO), which is known to catalyze the conversion of heme to biliverdin. HO uses electrons provided from NADPH/cytochrome P450 reductase (CPR) through protein–protein complex formation during the enzymatic reaction. We report that a Fe III (Schiff-base), in the place of the active-site heme prosthetic group of HO, can be reduced by NADPH/CPR. The crystal structure of the Fe(10-CH 2 CH 2 COOH-Schiff-base)·HO composite indicates the presence of a hydrogen bond between the propionic acid carboxyl group and Arg-177 of HO. Furthermore, the ET rate from NADPH/CPR to the composite is 3.5-fold faster than that of Fe(Schiff-base)·HO, although the redox potential of Fe(10-CH 2 CH 2 COOH-Schiff-base)·HO (−79 mV vs. NHE) is lower than that of Fe(Schiff-base)·HO (+15 mV vs. NHE), where NHE is normal hydrogen electrode. This work describes a synthetic metal complex activated by means of a protein–protein ET system, which has not previously been reported. Moreover, the result suggests the importance of the hydrogen bond for the ET reaction of HO. Our Fe(Schiff-base)·HO composite model system may provide insights with regard to design of ET biosystems for sensors, catalysts, and electronics devices.

    DOI: 10.1073/pnas.0510968103

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  • Coordinated Design of Cofactor and Active Site Structures in Development of New Protein Catalysts Reviewed

    Takafumi Ueno, Tomomi Koshiyama, Masataka Ohashi, Kazuyoshi Kondo, Masaharu Kono, Atsuo Suzuki, Takashi Yamane, Yoshihito Watanabe

    Journal of the American Chemical Society   127 ( 18 )   6556 - 6562   2005.5

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    DOI: 10.1021/ja045995q

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  • Monooxygenation of an aromatic ring by F43W/H64D/V68I myoglobin mutant and hydrogen peroxide - Myoglobin mutants as a model for P450 hydroxylaation chemistry Reviewed

    TD Pfister, T Ohki, T Ueno, Hara, I, S Adachi, Y Makino, N Ueyama, Y Lu, Y Watanabe

    JOURNAL OF BIOLOGICAL CHEMISTRY   280 ( 13 )   12858 - 12866   2005.4

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    DOI: 10.1074/jbc.M410853200

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  • A virus-based nanoblock with tunable electrostatic properties Reviewed

    A Chatterji, WF Ochoa, T Ueno, TW Lin, JE Johnson

    NANO LETTERS   5 ( 4 )   597 - 602   2005.4

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    DOI: 10.1021/nl048007s

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  • Catalase reaction by myoglobin mutants and native catalase - Mechanistic investigation by kinetic isotope effect Reviewed

    S Kato, T Ueno, S Fukuzumi, Y Watanabe

    JOURNAL OF BIOLOGICAL CHEMISTRY   279 ( 50 )   52376 - 52381   2004.12

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    DOI: 10.1074/jbc.M403532200

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  • Size-Selective Olefin Hydrogenation by a Pd Nanocluster Provided in an Apo-Ferritin Cage

    Takafumi Ueno, Masako Suzuki, Toshiaki Goto, Tomoharu Matsumoto, Kuniaki Nagayama, Yoshihito Watanabe

    Angewandte Chemie   116 ( 19 )   2581 - 2584   2004.5

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    DOI: 10.1002/ange.200353436

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  • Crystal Structures of Artificial Metalloproteins:  Tight Binding of FeIII(Schiff-Base) by Mutation of Ala71 to Gly in Apo-Myoglobin Reviewed

    Takafumi Ueno, Masataka Ohashi, Masaharu Kono, Kazuyoshi Kondo, Atsuo Suzuki, Takashi Yamane, Yoshihito Watanabe

    Inorganic Chemistry   43 ( 9 )   2852 - 2858   2004.5

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    DOI: 10.1021/ic0498539

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  • Copper binding to plant ozone-inducible proteins (OI2-2 and OI14-3) Reviewed

    M Kamiya, Y Kumaki, K Nitta, T Ueno, Y Watanabe, K Yamada, T Matsumoto, K Hikichi, N Matsushima

    BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS   314 ( 3 )   908 - 915   2004.2

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    DOI: 10.1016/j.bbrc.2003.12.158

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  • Hybridization of modified-heme reconstitution and distal histidine mutation to functionalize sperm whale-myoglobin Reviewed

    H Sato, T Hayashi, T Ando, Y Hisaeda, T Ueno, Y Watanabe

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   126 ( 2 )   436 - 437   2004.1

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    DOI: 10.1021/ja038798k

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  • Catalase Reaction by Myoglobin Mutants and Native Catalase Reviewed

    S. Kato, T. Ueno, S. Fukuzumi, Y. Watanabe

    J. Biol. Chem.   279   52376-52381   2004

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  • Molecular engineering of cytochrome P450 and myoglobin for selective oxygenations Reviewed

    T Ueno, T Ohki, Y Watanabe

    JOURNAL OF PORPHYRINS AND PHTHALOCYANINES   8 ( 1-3 )   279 - 289   2004

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  • Size-selective olefin hydrogenation by a Pd nanocluster provided in an apo-ferritin cage Reviewed

    T Ueno, M Suzuki, T Goto, T Matsumoto, K Nagayama, Y Watanabe

    ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   43 ( 19 )   2527 - 2530   2004

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    DOI: 10.1002/anie.200353436

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  • Molecular engineering of myoglobin: Influence of residue 68 on the rate and the enantioselectivity of oxidation reactions catalyzed by H64D/V68X myoglobin Reviewed

    HJ Yang, T Matsui, S Ozaki, S Kato, T Ueno, GN Phillips, S Fukuzumi, Y Watanabe

    BIOCHEMISTRY   42 ( 34 )   10174 - 10181   2003.9

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    DOI: 10.1021/bi034605u

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  • Introduction of P450, peroxidase, and catalase activities into myoglobin by site-directed mutagenesis: Diverse reactivities of compound I Reviewed

    Y Watanabe, T Ueno

    BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN   76 ( 7 )   1309 - 1322   2003.7

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    DOI: 10.1246/bcsj.76.1309

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  • Preparation of artificial metalloenzymes by insertion of chromium(III) Schiff base complexes into apomyoglobin mutants Reviewed

    M Ohashi, T Koshiyama, T Ueno, M Yanase, H Fujii, Y Watanabe

    ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   42 ( 9 )   1005 - +   2003

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    DOI: 10.1002/anie.200390256

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  • Asymmetric sulfoxidation and amine binding by H64D/V68A and H64D/V68S Mb: Mechanistic insight into the chiral discrimination step Reviewed

    S Kato, HJ Yang, T Ueno, S Ozaki, GN Phillips, S Fukuzumi, Y Watanabe

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   124 ( 29 )   8506 - 8507   2002.7

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    DOI: 10.1021/ja0256414

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  • Oxidative Modification of Tryptophan 43 in the Heme Vicinity of the F43W/H64L Myoglobin Mutant Reviewed

    Isao Hara, Takafumi Ueno, Shin-Ichi Ozaki, Shinobu Itoh, Keonil Lee, Norikazu Ueyama, Yoshihito Watanabe

    Journal of Biological Chemistry   276 ( 39 )   36067 - 36070   2001.9

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    DOI: 10.1074/jbc.C100371200

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  • Role of the invariant peptide fragment forming NH center dot center dot center dot S hydrogen bonds in the active site of cytochrome P-450 and chloroperoxidase: Synthesis and properties of Cys-containing peptide Fe(III) and Ga(III) (octaethylporphinato) complexes as models Reviewed

    T Ueno, N Nishikawa, S Moriyama, S Adachi, K Lee, T Okamura, N Ueyama, A Nakamura

    INORGANIC CHEMISTRY   38 ( 6 )   1199 - 1210   1999.3

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    DOI: 10.1021/ic980710u

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  • pKa shift by NH center dot center dot center dot S hydrogen bond in the hair-pin turn structure of Cys-containing oligopeptides Reviewed

    N Ueyama, S Moriyama, T Ueno, A Nakamura

    PEPTIDE SCIENCE - PRESENT AND FUTURE   288 - 290   1999

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  • Protection of proton-initiated ligand dissociation from Hg(II) complexes with bulky cholyl amide arenethiolate by NH⋯S hydrogen bonding in an aqueous micellar solution Reviewed

    Ueyama N, Inohara M, Onoda A, Ueno T, Okamura T.-A, Nakamura A

    Inorganic Chemistry   38 ( 18 )   4028 - 4031   1999

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    DOI: 10.1021/ic9811042

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    Other Link: http://orcid.org/0000-0002-5791-4386

  • Role of alpha-helix conformation cooperating with NH center dot center dot center dot S hydrogen bond in the active site of cytochrome P-450 and chloroperoxidase: Synthesis and properties of [M-III(OEP)(Cys-helical peptide)] (M = Fe and Ga) Reviewed

    T Ueno, Y Kousumi, K Yoshizawa-Kumagaye, K Nakajima, N Ueyama, T Okamura, A Nakamura

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   120 ( 47 )   12264 - 12273   1998.12

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  • Regulation of electrochemical properties of Fe(II) and Fe(III) thiolate complexes by hydrogen bonding with diamide additive Reviewed

    H Zaima, T Unryuu, Y Kousumi, T Ueno, T Okamura, N Ueyama, A Nakamura

    REACTIVE & FUNCTIONAL POLYMERS   37 ( 1-3 )   225 - 233   1998.6

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  • Cooperative redox regulation of [4Fe-4S] ferredoxin model arenethiolate complexes by NH· · ·S hydrogen bonds and an aromatic C-H···S interaction Reviewed

    Takafumi Ueno, Masahiro Inohara, Norikazu Ueyama, Akira Nakamura

    Bulletin of the Chemical Society of Japan   70 ( 5 )   1077 - 1083   1997

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    DOI: 10.1246/bcsj.70.1077

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  • Stabilization of [4Fe-4S] ferredoxin model complex by a combination of hydrophobic cholyl group and the specific NH center dot center dot center dot S hydrogen bond in aqueous micellar solution Reviewed

    N Ueyama, M Inohara, T Ueno, T Okamura, A Nakamura

    POLYMER JOURNAL   29 ( 11 )   949 - 951   1997

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  • Redox behaviour of 4Fe-4S ferredoxin model arenethiolate complexes involving specific NH center dot center dot center dot S hydrogen bonds assisted by a neighbouring phenyl group Reviewed

    T Ueno, N Ueyama, A Nakamura

    JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS   ( 19 )   3859 - 3863   1996.10

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  • F-19 NMR INVESTIGATIONS OF COBALT(II) COMPLEXES WITH CYSTEINE-CONTAINING PEPTIDE LIGANDS Reviewed

    WY SUN, T UENO, N UEYAMA, A NAKAMURA

    MAGNETIC RESONANCE IN CHEMISTRY   33 ( 3 )   174 - 177   1995.3

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  • 光エネルギー変換における分子触媒の新展開 : 天然光合成を凌駕する反応系の構築を目指して

    日本化学会( Role: Contributorタンパク質結晶を利用した分子・ナノ粒子触媒)

    化学同人  2020.9  ( ISBN:9784759813982

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    Total pages:v, 176p, 図版 [4] p   Language:Japanese  

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  • フロンティア機能高分子金属錯体

    西原, 寛, 山元, 公寿, 秋根, 茂久, 安部, 聡, 伊津野, 真一, 今岡, 享稔, 上野, 隆史, 植村, 卓史, 大竹, 研一, 大坪, 主弥, 小坂田, 耕太郎, 小野田, 晃, 小柳津, 研一, 川上, 浩良, 神戸, 徹也, 北川, 宏, 君塚, 信夫, 葛目, 陽義, 小松, 晃之, 中, 建介, 長谷川, 翔大, 林, 高史, 樋口, 昌芳, 古川, 修平( Role: Contributor人工金属酵素による機能創成)

    三共出版  2020.6  ( ISBN:9784782707913

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    Total pages:xi, 537p   Language:Japanese  

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  • 生命機能に迫る分子化学 : 生命分子を真似る、飾る、超える

    日本化学会( Role: Contributor人工金属酵素の次世代設計)

    化学同人  2018.8  ( ISBN:9784759813906

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    Total pages:v, 188p, 図版 [4] p   Language:Japanese  

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  • フロンティア生物無機化学

    伊東, 忍, 青野, 重利, 林, 高史, 増田, 秀樹( Role: Contributor金属錯体による細胞機能制御)

    三共出版  2016.12  ( ISBN:9784782707562

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    Total pages:xxii, 527p   Language:Japanese  

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  • ナノ空間材料の創製と応用 (フロンティアテクノシリーズ)

    有賀, 克彦( Role: Contributor蛋白質が提供するナノ空間)

    フロンティア出版  2009.11  ( ISBN:4902410176

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    Total pages:314   Language:Japanese  

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  • 配位空間の化学―最新技術と応用― (CMC books)

    北川, 進( Role: Contributor蛋白質空間錯体Hybridy)

    シーエムシー  2009.10  ( ISBN:4781301355

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    Total pages:345   Language:Japanese  

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  • 超分子金属錯体

    藤田, 誠, 塩谷, 光彦, 安部, 聡( Role: Contributor超分子タンパク質内部空間の金属イオン集積)

    三共出版  2009.10  ( ISBN:9784782706084

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    Total pages:x, 413p, 図版 [4] p   Language:Japanese  

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  • タンパク質結晶の新展開 : 新しい育成技術から構造解析・応用研究へ

    高野, 和文( Role: Contributor架橋化蛋白質結晶の不均一触媒への展開)

    シーエムシー出版  2008.5  ( ISBN:9784781300245

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  • バイオナノプロセス : 溶液中でナノ構造を作るウェット・ナノテクノロジーの薦め

    山下, 一郎, 芝, 清隆( Role: Contributorナノ構造蛋白質の内部空間利用)

    シーエムシー出版  2008.3  ( ISBN:9784882319955

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  • はたらく分子マシン(第7回)分子サイズの小さな針

    上野隆史

    現代化学   601   52 - 55   2021.4

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  • Development of Bio-Hybrid Materials by Design of Supramolecular Protein Assemblies Reviewed

    Satoshi Abe, Takafumi Ueno

    Journal of Synthetic Organic Chemistry, Japan   75 ( 12 )   1264 - 1273   2017

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    Authorship:Last author, Corresponding author   Language:Japanese   Publisher:The Society of Synthetic Organic Chemistry, Japan  

    DOI: 10.5059/yukigoseikyokaishi.75.1264

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  • 光刺激応答CO放出Mn錯体の新規MRI造影剤への応用

    庄剛矢, 兵藤文紀, 立花葉子, 上野隆史

    錯体化学会討論会講演要旨集   66th   221   2016.8

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  • 超分子タンパク質を用いて金属の反応を操る : 最新の人工金属タンパク質研究が拓く新しい世界

    安部 聡, 稲葉 央, 上野 隆史

    化学 = Chemistry   70 ( 8 )   41 - 46   2015.8

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  • Design of Protein Crystals toward Development of Solid Biomaterials

    安部 聡, 上野 隆史

    化學工業   66 ( 4 )   264 - 272   2015.4

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  • X線結晶構造解析が解き明かすーカゴタンパク質のガス放出

    藤田健太上野隆史

    日本アイソトープ協会"ISOTOPE NEWS"   64   2 - 6   2015.3

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  • Modulation of Cellular Functions by Protein Needles

    INABA Hiroshi, UENO Takafumi

    Seibutsu Butsuri   55 ( 2 )   89 - 91   2015

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    Language:Japanese   Publisher:The Biophysical Society of Japan General Incorporated Association  

    DOI: 10.2142/biophys.55.089

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  • Designing protein materials for nanomedicine

    Takafumi Ueno

    Transactions of Japanese Society for Medical and Biological Engineering   52 ( 0 )   37 - SY-38   2014.8

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    Language:Japanese   Publisher:Japan Soc. of Med. Electronics and Biol. Engineering  

    DOI: 10.11239/jsmbe.52.SY-37

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  • Solid Artificial Metalloenzymes by Post-Engineering of Porous Protein Crystals

    T. Ueno, S. Abe, H. Tabe

    JOURNAL OF BIOLOGICAL INORGANIC CHEMISTRY   19   S161 - S161   2014.3

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  • Preface

    Takafumi Ueno, Yoshihito Watanabe

    Coordination Chemistry in Protein Cages: Principles, Design, and Applications   xv - xvi   2013.4

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    Language:English   Publisher:John Wiley and Sons  

    DOI: 10.1002/9781118571811

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  • Coordination Chemistry in Protein Cages: Principles, Design, and Applications

    Takafumi Ueno, Yoshihito Watanabe

    Coordination Chemistry in Protein Cages: Principles, Design, and Applications   2013.4

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    Language:English   Publisher:John Wiley and Sons  

    DOI: 10.1002/9781118571811

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  • Molecular Design of Protein Crystals as a Reaction Vessels for Observation of Chemical Reactions

    ABE Satoshi, UENO Takafumi

    Nihon Kessho Gakkaishi   55 ( 1 )   81 - 85   2013.2

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    Language:Japanese   Publisher:The Crystallographic Society of Japan  

    In recent years, protein crystals receive much attention in the filed of nanobiomaterial sciences because they consist of highly ordered protein assemblies with unique nano reaction environments. Therefore, protein crystals have been utilized as nanosized porous materials for application in separation processes, heterogeneous catalysis, drug delivery, and so on. These crystals are able to capture and deposit metal ions and metal complexes within solvent channels because the amino acid side chains responsible for coordinating the metal ions are periodically aligned on the surface of solvent channels of the crystal lattices. Here, we elucidate accumulation process of metals by X-ray crystallographic analysis of protein crystals containing metal complexes or ions and apply to catalytic reactions and preparation of magnetic materials.

    DOI: 10.5940/jcrsj.55.81

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  • Palladium, Coordination of Organometallic Complexes in Apoferritin Invited Reviewed

    Takafumi Ueno, Satoshi Abe

    Encyclopedia of Metalloproteins   1641 - 1648   2013

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    Publisher:Springer New York  

    DOI: 10.1007/978-1-4614-1533-6_574

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  • Reaction monitoring of nanoparticle formation in protein crystals containing metal ions

    上野 隆史

    旭硝子財団助成研究成果報告   1 - 4   2012

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  • 蛋白質結晶内部での化学反応観察

    安部 聡, 上野 隆史

    日本結晶学会誌   54 ( 0 )   s13 - s13   2012

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    Language:Japanese   Publisher:日本結晶学会  

    DOI: 10.5940/jcrsj.54.s13

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  • Porous Protein Crystals Designed for Metal Complexes

    UENO Takafumi

    高分子   60 ( 6 )   399 - 400   2011.6

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  • Rh-catalyzed polymerization in bionano cavity of apo-ferritin

    Zhuofeng Ke, Keiji Morokuma, Takafumi Ueno, Satoshi Abe

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   241   2011.3

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  • 巨大タンパク質を舞台とする触媒化学

    上野 隆史

    現代化学   ( 467 )   54 - 59   2010.2

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  • 蛋白質集合体のナノ空間を利用した化学反応制御

    上野 隆史

    Drug delivery system   24 ( 3 )   259 - 259   2009.6

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  • 27aPS-98 Photo-induced charge transfer in porous protein crystals

    Shirai M, Koshiyama T, Ueno T, Kitagawa S, Tanaka K

    Meeting Abstracts of the Physical Society of Japan   64 ( 0 )   668 - 668   2009

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    Language:Japanese   Publisher:The Physical Society of Japan  

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  • 1S1-5 Structural insight for accumulation process of metal ions on a protein assembly(1S1 Biophysics of Transition Metals: Challenges of Young Researchers,The 46th Annual Meeting of the Biophysical Society of Japan)

    Ueno Takafumi

    Seibutsu Butsuri   48 ( 0 )   S1   2008

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    Language:English   Publisher:The Biophysical Society of Japan General Incorporated Association  

    DOI: 10.2142/biophys.48.S1_5

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  • Polymerization catalyzed by a rhodium/ferritin composite

    Takafumi Ueno, Satoshi Abe, Masako Suzuki, Kunio Hirata, Nobutaka Suzuki, Masaki Takata, Yoshihito Watanabe

    Polymer Preprints, Japan   55 ( 1 )   1798   2006.10

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  • Structure-Function Relationship of the Heme Oxygenase

    Masaki Unno, Takafumi Ueno, Norihiko Yokoi, Toshitaka, Matsui, Tomoe Kawanami, Mari Iwasaki, Shusuke Kusama, Yoshihito Watanabe, Masao Ikeda-Saito

    Photon Factory Activity Report   24 ( B )   230   2006

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  • 金属酵素の設計に挑む Invited

    渡辺芳人, 上野隆史

    チャンピオンレコードを持つ金属錯体最前線(山下正廣、北川進 編)化学同人   72-81   2006

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  • Size-selective olefin hydrogenation by a Pd nanocluster in the apo-ferritin cage.

    M Suzuki, T Ueno, T Goto, T Matsumoto, K Nagayama, Y Watanabe

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   229   U1007 - U1007   2005.3

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  • Molecular design of M(III)(Schiff-Base)??apo-myoglobin (M=Mn and Cr) based on their crystal structures.

    T Koshiyama, T Ueno, M Ohashi, K Kondo, M Kono, A Suzuki, T Yamane, Y Watanabe

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   229   U1047 - U1047   2005.3

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  • Crystal structure and reactivity of the Fe(III) Schiff-base complex in the heme oxygenase active site.

    N Yokoi, T Ueno, M Unno, T Matsui, M Ikeda-Saito, Y Watanabe

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   229   U1005 - U1006   2005.3

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  • Size Selective Olefin Hydrogenation by a Pd Nanocluster Provided in the Apo-Ferritin Cage

    Angew. Chem. Int. Ed.   42   1005 - 1008   2004

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  • Construction of artificial metalloenzymes: Insertion of chromium(III) schiff base complexes into apo-myoglobin

    T Ueno, T Koshiyama, M Ohashi, M Kono, T Yamane, Y Watanabe

    JOURNAL OF INORGANIC BIOCHEMISTRY   96 ( 1 )   243 - 243   2003.7

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  • Molecular mechanism of the catalase reaction studied by myoglobin mutants

    Y Watanabe, T Ueno, S Fukuzumi, S Kato

    JOURNAL OF INORGANIC BIOCHEMISTRY   96 ( 1 )   51 - 51   2003.7

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  • 1L1430 Copper-binding to stress-inducible proteins from plants

    Kamiya M, Nitta K, Ueno T, Watanabe Y, Yamada K, Matsushima N

    Seibutsu Butsuri   42 ( 2 )   S70   2002

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    Language:Japanese   Publisher:The Biophysical Society of Japan General Incorporated Association  

    DOI: 10.2142/biophys.42.S70_3

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  • Application of Combinatorial Chemistry for R & TD of Heterogeneous Catalysts

    UENO Takafumi, KOYASU Yukio

    42 ( 4 )   268 - 271   2000.6

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  • Syntheses and properties of cytochrome P-450 model complexes with helical cysteine-containing peptide.

    T Ueno, N Nishikawa, S Moriyama, N Ueyama, A Nakamura

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   213   532 - INOR   1997.4

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Industrial property rights

  • MHC分子に適合する病原微生物由来のペプチドが担持された複合蛋白質単量体、当該単量体の会合体、及び当該会合体を有効成分とするコンポーネントワクチン、並びに、免疫後の生理活性物質の分泌に関する情報の取得方法

    上野 隆史, Nguyen Dan Que

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    Applicant:東京工業大学, 学校法人北里研究所

    Application no:PCT/JP2022/000327  Date applied:2022.1

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  • タンパク質結晶材料の製造

    上野 隆史, 安部 聡, 小島 摩利子, 田中 潤子

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    Applicant:東京工業大学

    Application no:特願2021-198864  Date applied:2021.12

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  • タンパク質結晶の製造方法及び結晶構造解析方法

    上野 隆史, 安部 聡, 小島 摩利子

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    Applicant:東京工業大学

    Application no:特願2021-006607  Date applied:2021.2

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  • ウイルスの非構造タンパク質が担持された複合タンパク質単量体、当該単量体の会合体、及び、当該会合体を有効成分とする、コンポーネントワクチン

    上野 隆史, Nguyen Dan Que

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    Applicant:東京工業大学, 学校法人北里研究所, デンカ株式会社

    Application no:特願2021-542980  Date applied:2020.8

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  • タンパク質固体材料の製造

    上野 隆史, 安部 聡, 小島 摩利子

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    Applicant:東京工業大学

    Application no:特願2021-537385  Date applied:2020.8

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  • タンパク質固体材料の製造

    上野 隆史, 安部 聡, Tien Khanh Nguyen

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    Applicant:東京工業大学

    Application no:特願2020-034011  Date applied:2020.2

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  • 融合タンパク質及びその使用

    上野 隆史, 亀山 志織

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    Applicant:東京工業大学

    Application no:特願2018-088420  Date applied:2018.5

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  • 改変ポリヘドリンタンパク質及びその使用

    上野 隆史, 安部 聡, 笠松 誠

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    Applicant:国立大学法人東京工業大学

    Application no:特願2016-171201  Date applied:2016.9

    Announcement no:特開2018-033404  Date announced:2018.3

    J-GLOBAL

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  • ヘモシアニン会合体を用いた包摂体の製造方法

    田中 良和, 松野 明日香, 北村 朗, 金城 政孝, 姚 閔, 上野 隆史, 安部 聡

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    Applicant:国立大学法人北海道大学, 国立大学法人東京工業大学

    Application no:特願2016-110309  Date applied:2016.6

    Announcement no:特開2017-214339  Date announced:2017.12

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  • 標的タンパク質の細胞内導入剤、核酸及び標的タンパク質の細胞内導入方法

    上野 隆史, 稲葉 央, 深井 俊宏, 有坂 文雄, 金丸 周司

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    Applicant:国立大学法人東京工業大学

    Application no:特願2014-039644  Date applied:2014.2

    Announcement no:特開2015-163056  Date announced:2015.9

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  • 標的タンパク質の細胞内導入剤及び標的タンパク質の細胞内導入方法

    上野 隆史, 稲葉 央, 深井 俊宏, 有坂 文雄, 金丸 周司

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    Applicant:国立大学法人東京工業大学

    Application no:特願2014-039644  Date applied:2014.2

    Announcement no:特開2015-163056  Date announced:2015.9

    Patent/Registration no:特許第6304683号  Date issued:2018.3

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  • 多角体−標的分子複合体の製造方法、多角体−標的分子複合体、タンパク質及び核酸

    上野 隆史, 田部 博康, 藤田 健太

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    Applicant:国立大学法人東京工業大学

    Application no:特願2014-035149  Date applied:2014.2

    Announcement no:特開2015-159731  Date announced:2015.9

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  • タンパク質結晶を用いた複合材料及びその製造方法

    上野 隆史, 安部 聡, 北川 進

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    Applicant:国立大学法人京都大学

    Application no:JP2010073782  Date applied:2010.12

    Announcement no:WO2011-083735  Date announced:2011.7

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  • 金属ナノ粒子分散液を製造する方法

    小松 さと子, 福田 裕章, 渡辺 芳人, 上野 隆史, 安部 聡

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    Applicant:株式会社デンソー, 財団法人名古屋産業科学研究所

    Application no:特願2007-184717  Date applied:2007.7

    Announcement no:特開2009-019256  Date announced:2009.1

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  • 改変アポフェリチンの製造方法とその利用

    上野 隆史, 渡辺 芳人, 鈴木 理子, 安部 聡, 安部 瑞恵, 平田 邦生, 山本 雅貴, 高田 昌樹

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    Applicant:国立大学法人名古屋大学, 財団法人高輝度光科学研究センター

    Application no:特願2006-260190  Date applied:2006.9

    Announcement no:特開2008-088059  Date announced:2008.4

    J-GLOBAL

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  • 金属錯体タンパク質複合体及び酸化触媒

    渡辺 芳人, 上野 隆史, 大橋 雅卓, 越山 友美, 横井 紀彦

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    Applicant:財団法人名古屋産業科学研究所

    Application no:特願2004-080917  Date applied:2004.3

    Announcement no:特開2005-154402  Date announced:2005.6

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  • 金属錯体タンパク質複合体及び水素化触媒

    渡辺 芳人, 上野 隆史, 安部 聡

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    Applicant:財団法人名古屋産業科学研究所

    Application no:特願2003-310085  Date applied:2003.9

    Announcement no:特開2005-075799  Date announced:2005.3

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  • エチレンオキシドの製造法

    岩倉 具敦, 上野 隆史

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    Applicant:三菱化学株式会社

    Application no:特願平11-354084  Date applied:1999.12

    Announcement no:特開2001-172272  Date announced:2001.6

    J-GLOBAL

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  • エチレンオキシド製造用触媒及びエチレンオキシドの製造方法

    岩倉 具敦, 上野 隆史

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    Applicant:三菱化学株式会社

    Application no:特願平11-240887  Date applied:1999.8

    Announcement no:特開2001-062307  Date announced:2001.3

    J-GLOBAL

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  • エチレンオキシド製造用触媒及びエチレンオキシドの製造方法

    岩倉 具敦, 上野 隆史

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    Applicant:三菱化学株式会社

    Application no:特願平11-240887  Date applied:1999.8

    Announcement no:特開2001-062307  Date announced:2001.3

    Patent/Registration no:特許第3794215号  Date issued:2006.4

    J-GLOBAL

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  • 複合ポリペプチド単量体、細胞浸透機能を有する当該複合ポリペプチドの単量体の会合体、及び、当該会合体を有効成分とする皮下、皮内、経皮又は筋肉内投与用ノロウイスルコンポーネントワクチン

    上野 隆史, 吉川 健吾, 真野 恵

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    Applicant:東京工業大学, 学校法人北里研究所, デンカ株式会社, 国立感染症研究所長

    Application no:特願2018-545748 

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Works

  • 蛋白質超分子ナノチューブを利用した機能分子の創成

    2006

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  • 蛋白質結晶を用いた多細孔材料の創成

    2006

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Research Projects

  • 複合タンパク質結晶による人工光合成システムの構築

    Grant number:22KF0138  2023.3 - 2024.3

    日本学術振興会  科学研究費助成事業  特別研究員奨励費

    上野 隆史, PAN TIEZHENG

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    Grant amount:\2200000 ( Direct Cost: \2200000 )

    外来酵素としてのFDHのPhCへの組込みと最適化を行なった。具体的には、野生型Bombyx mori CPV多面体モノマー(PhM)を、連結した中空スペースを形成する残基欠損変異体へと工学的に変換した。PhCの多孔性ネットワークを拡張することによって高い外来分子内包化能を実現しました。次に、カプセル化のためのシグナルタグとして、PhMのN末端の30残基からなるヘリックスであるH1に、外来酵素FDHを融合させた。最後に、PhMとH1-FDHを大腸菌で共発現・共結晶化し、H1-FDHを含む多面体変異体結晶を形成した。その結果、ハイブリッドタンパク質結晶の工学的作製が可能となり、天然のFDHと有機光増感剤エオシンYの両方をカプセル化することに成功し、人工光合成用のハイブリッド固体触媒を実現した。この細胞内共晶化により、FDHの精製も容易となり、固定化後も遊離酵素と比較して高い
    触媒活性を維持することができました。また、PhCsの多孔質構造により、エオシンYに浸漬することで、カスケード反応による人工光合成活性を付与することが実現した。

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  • XFEL-SFXによる化学反応解明を目指した「反応追跡結晶」の構築

    Grant number:22H00347  2022.4 - 2026.3

    日本学術振興会  科学研究費助成事業  基盤研究(A)

    上野 隆史, 庄司 光男, 南後 恵理子

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    Grant amount:\42250000 ( Direct Cost: \32500000 、 Indirect Cost:\9750000 )

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  • 複合タンパク質結晶による人工光合成システムの構築

    Grant number:21F51326  2021.11 - 2024.3

    日本学術振興会  科学研究費助成事業  特別研究員奨励費

    上野 隆史, PAN TIEZHENG

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    Grant amount:\2200000 ( Direct Cost: \2200000 )

    本研究の目的は、ハイブリッド型タンパク質結晶を用いた酵素結合型人工光合成システムの開発である。標的酵素となるformate dehydrogenase (FDH)と二元性Rh系光増感剤を多面体結晶(PhC)に内包し、光誘起電子移動とCO2からギ酸への変換のカスケードプロセスを促進させることである。そこで、酵素 FDH のタンパク質結晶への in vivo 内包化をおこなった。当初の計画に従い、 FDHへ結晶内包促進ようのタグフラグメントを融合することによって、多角体への目的のタンパク質の内包に成功した。反応の初期スクリーニングからは、予想通りに内包したタンパク質の機能が多角体結晶内でも保持されていることがわかった。従って、次の金属錯体内包複合化のための準備は整ったと考えられる。

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  • 複合タンパク質結晶による人工光合成システムの構築

    Grant number:21F21326  2021.9 - 2024.3

    日本学術振興会  科学研究費助成事業  特別研究員奨励費

    上野 隆史, PAN TIEZHENG

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    Grant amount:\2200000 ( Direct Cost: \2200000 )

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  • In-cell protein crystallization for structure analysis

    Grant number:20K21244  2020.7 - 2022.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Research (Exploratory)

    Takafumi Ueno

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    Grant amount:\6500000 ( Direct Cost: \5000000 、 Indirect Cost:\1500000 )

    The determination of high-resolution protein structures has attracted attention in various fields, from life science to pharmaceutical applications. However, the purification of proteins remains a major common problem that has not yet been solved. In this study, we attempted to realize high-resolution structure determination of target proteins by intracellular crystallization of porous protein crystals fused with target proteins with pores of several nm in diameter. Target protein-fused porous protein crystals were synthesized in living cells. By fusing the target protein to a specific site of the template crystalline protein, the structure was determined by using the microcrystal beamline of a large synchrotron facility.

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  • In-cell syntheisi of protein crystal materials

    Grant number:19H02830  2019.4 - 2022.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    Ueno Takafumi

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    Grant amount:\17420000 ( Direct Cost: \13400000 、 Indirect Cost:\4020000 )

    Understanding the crystallization mechanism is essential to identifying the interactions between the protein monomers that make up the crystals. Based on a comparison of crystal structures of different species of polyhedra, the applicant considered that some regions are involved in the internalization of polyhedral viruses but not in the interactions that are essential for crystallization. Polyhedra crystals were genetically engineered with deletions ranging from 8 to 50 residues per monomer.

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  • バクテリオファージに学ぶ発動分子システムの創成

    Grant number:18H05421  2018.6 - 2023.3

    日本学術振興会  科学研究費助成事業  新学術領域研究(研究領域提案型)

    上野 隆史, 金丸 周司

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    Grant amount:\72930000 ( Direct Cost: \56100000 、 Indirect Cost:\16830000 )

    生命環境では、様々なタンパク質が特異な集合構造を形成し、自発的に機動する分子機関を構築されている。本研究では、代表者が開発した、T4ファージ由来の全長15nmのタンパク質針を基盤とし、新しい分子機関の合成をめざした。具体的には、分子機関としてのタンパク質針精密設計として、タンパク質針の結晶構造やHSAFMの実験結果と分子動力学計算を元に、分子機関としての機能を精密に制御したタンパク質針を構築し、タンパク質針をユニットとしてタンパク質針を階層的に集積し、アクティブマターとしての新しい機能の発現を目指した。高速AFMの実験結果を数理モデルを用いた解析により理解することによって、理論計算のモデルを構築し新たな集合体形成のメカニズム解明へとつなげることができた。さらに、これらの結果を踏まえ、タンパク質針の集団運動の制御に向けた精密分子設計の指針ができた。

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  • 発動分子科学:エネルギー変換が拓く自律的機能の設計(総括)

    Grant number:18H05418  2018.6 - 2023.3

    日本学術振興会  科学研究費助成事業  新学術領域研究(研究領域提案型)

    金原 数, 上野 隆史

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    Grant amount:\105170000 ( Direct Cost: \80900000 、 Indirect Cost:\24270000 )

    (1)領域の研究成果報告と今後の研究連携推進のための領域会議を2021年5月と2021年11-12月にオンライン形式で実施した。(2)昨年度に引き続き,産官学連携活動(ME-Innov)として,領域の研究内容の相互に理解し,今後の連携活動を円滑に推進することを目的として,複数の企業研究者と領域参加メンバーによるセミナーおよび意見交換会を実施した。発動分子科学の将来的な長期展望を決めるための情報収集を行った。(3)昨年度に引き続き,関連分野の最新動向と,共同研究,連携研究推進のための情報を得ることを目的として,各分野で活躍する研究者を講師とした発動分子科学セミナーを実施した。(4)昨年度に引き続き,関連学会におけるシンポジウムや研究会を主催・共催し,領域活動の周知につとめた。(5)領域メンバーの自由闊達な意見交換の場として,毎週定時にオンラインで開催する「発動分子懇談会」を開始した。(6)SNSおよび領域ホームページを通じて領域の活動状況と研究成果の公開を行った。(7)研究成果公開ための取り組みとして公開シンポジウムを開催し,優れた発表を行った若手研究者に対しポスター賞を授与した。(8)異分野研究連携への取り組みとして,新学術領域「ソフトロボット学」との共催シンポジウムを2022年2月に,学術変革領域研究「分子サイバネティクス」との共催ワークショップを2022年3月に開催した。今後も研究連携を強めていくこととした。(9)発動分子科学の国際的な認知を広めるため,オンラインでの国際ワークショップを2022年2月に開催した。本領域の研究内容に関する周知活動を行うと共に将来的な国際的研究連携の進め方について意見交換を行った。

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  • Structure characterization of beta-Amyloid oligomer in protein cage

    Grant number:18K19143  2018.6 - 2020.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Research (Exploratory)

    Unoe Takafumi

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    Grant amount:\6240000 ( Direct Cost: \4800000 、 Indirect Cost:\1440000 )

    The formation process of amyloid fibers holds the key to the onset of Alzheimer's disease. It has been reported that Ab oligomers consisting of a small number of amyloid-beta peptide monomers (Ab) have higher toxicity than Ab fiber. In this study, we established a method for isolating an Ab-oligomer by using encapsulation in a protein cage.

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  • 多孔性蛋白質結晶内の異方的な金属配位設計と機能化

    Grant number:17H05358  2017.4 - 2019.3

    日本学術振興会  科学研究費助成事業  新学術領域研究(研究領域提案型)

    上野 隆史

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    Grant amount:\5200000 ( Direct Cost: \4000000 、 Indirect Cost:\1200000 )

    本申請では、蛋白質の持つ異方的な配位場と、蛋白質結晶の材料としての特性に着目し、「多孔性蛋白質結晶内の金属錯体機能制御」を目指す。具体的には、(1)多孔性蛋白質結晶への金属配位場設計、(2) 金属配位による蛋白質結晶内細孔の機能化から、(3) 蛋白質結晶内細孔の動的複合機能制御を達成する。申請者がこれまで進めてきた金属化合物と蛋白質結晶の複合化技術を基軸に(JSTさきがけ研究、最先端・次世代研究開発支援プログラム)、蛋白質結晶を金属錯体の新しい反応場として利用する試みは、従来の生物無機化学や錯体化学の可能性を拡げる新しい配位制御技術としても、バイオから材料化学まで分野を超えたインパクトを与えると考える。本研究では、細胞内で自発的に極めて安定な結晶を形成する「多角体」の蛋白質結晶を用いて金属配位による機能化を進めた。特に、今年度は細胞内で形成された多孔性蛋白質結晶へ、細胞内で直接金属イオンと反応させることによる金属配位を達成し、金属錯体の集積可能な反応場を確認した。

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  • In cell synthesis of multy-layer protein crystals

    Grant number:16H04177  2016.4 - 2019.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    Ueno Takafumi

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    Grant amount:\17810000 ( Direct Cost: \13700000 、 Indirect Cost:\4110000 )

    In recent years, biotechnological applications in which a molecular assembly consisting of proteins is used as a template for biofunctional materials are expected. In this study, we focused on the functionalization of protein crystals, which is attracting attention for use as a solid material, and achieved the construction of a precise multilayer structure that was considered difficult even with conventional artificial porous materials. In particular, we focused on the protein "polyhedra" derived from insect viruses that form crystals with the intracellular crystallization reaction and established a new biofunctional material synthesis with the precise multi-layer accumulation of foreign proteins in the polyhedron crystals.

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  • T4ファージ由来蛋白質針による生体膜透過の動的秩序機構

    Grant number:16H00755  2016.4 - 2018.3

    日本学術振興会  科学研究費助成事業  新学術領域研究(研究領域提案型)

    上野 隆史

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    Grant amount:\6370000 ( Direct Cost: \4900000 、 Indirect Cost:\1470000 )

    近年、多くのファージや、分泌系では、効率的な膜輸送反応に針状蛋白質を利用していることが明らかとなり、その応用利用が注目されている。そこで、本研究では、バクテリオファージT4の部品蛋白質から合成した蛋白質針の自発的な細胞膜透過能に着目し、そのメカニズムの解明を目指した。具体的には、H20-H22年度基盤研究(B)「ウイルス部品蛋白質からなるナノチューブ構造体の分子設計と機能化」と、H26-H27年度新学術領域研究「動的秩序」「人工分子針の細胞膜貫通制御」により見出した蛋白質針の細胞膜透過現象をもとに、以下に示す三種類の実験を組み合わせた領域内外の融合研究により、蛋白質針の膜透過機能の解明を達成した。(1)高速AFM観察:研究の要となる高速AFM測定では、マイカ基板上へ吸着した人工蛋白質針を脂質二分子膜の端へ相互作用させることによって、膜貫通プロセスを二次元的な運動として1分子観察した。(2) MD計算:高速AFM解析によって得られた蛋白質針と脂質膜との接触角、接触保持時間、挿入速度をパラメーター化し、それらの構造情報をもとに、MD計算を進めた。(3)電気生理学測定:液滴接触法による脂質二分子膜作成から、迅速測定系を構築し、脂質膜透過と膜間電位差の関係を明らかとした。さらに、針先構造や表面電荷の異なる蛋白質針の合成を行い、上記の実験による膜透過能の比較から、膜透過メカニズムの全容を解明した。

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  • In cell protein crystallization for structure analysis

    Grant number:16K13095  2016.4 - 2018.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Exploratory Research

    Ueno Takafumi

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    Grant amount:\3510000 ( Direct Cost: \2700000 、 Indirect Cost:\810000 )

    Due to the remarkable progress of X-ray crystal structure analysis, structure determination from micro protien crystals has been reported. These results are dramatically changing the common sense of protien crystallization which requires a long time, a large quantity and high quality of protein samples. One challenge using this technique is to determine protien structures with microcrystals formed spontaneously in cells. Natural systems utilize intracellular crystallization reactions for purification and storage of protein synthesized in vivo. In this study, we succeeded in the creation of protein crystals with pore spaces as intracellular templates as an innovative crystallization method for rapid crystal structure analysis. In addition, we succeeded in accumulating the target protein simultaneously produced in the crystal.

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  • 細胞内の自発的超分子構築を駆動する分子針の開発

    Grant number:15H00805  2015.4 - 2017.3

    日本学術振興会  科学研究費助成事業  新学術領域研究(研究領域提案型)

    上野 隆史

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    Grant amount:\7280000 ( Direct Cost: \5600000 、 Indirect Cost:\1680000 )

    近年、外来タンパク質を細胞内へ輸送するための様々な分子システムが研究されている。高分子への内包、シグナルペプチドの修飾、エレクトロポレーション等による従来の細胞内蛋白質輸送は、その輸送効率の低さと不均一性、細胞毒性、蛋白質変成等の問題から、単一分子で機能する蛋白質の輸送に限られていた。本手法では、分子針が六量体から形成されている特徴を活かし、分子針当たり6個の蛋白質の輸送により、単量体の高い細胞内局所濃度の維持が可能となる。本研究では、バクテリオファージT4の有する大腸菌外膜透過タンパク質を基盤とする人工細胞膜貫通タンパク質針 (Protein Needle, PN)の輸送タンパク質としての利用に着目した。これまでsfGFPとPNを遺伝子工学的に融合させた複合体を用いて、細胞内へのGFP輸送に成功している。本研究では、PNにより細胞内へ導入した外来タンパク質の機能を発現させる新たな系の構築を目的とした。そこで特異的な遺伝子配列を認識し、その組み換え反応を触媒する酵素Cre recombinase (Cre)を外来タンパク質としてPNに融合した。PNとCreを結ぶリンカー部位に細胞内在性の加水分解酵素であるFurinにより切断されるフラグメントを導入し、効率的なCreのPNからの解離と機能発現を実証した。

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  • Hybrid protein needle for controlling model animal functions

    Grant number:26560433  2014.4 - 2016.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Exploratory Research

    UENO Takafumi, SUZUKI Takashi

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    Grant amount:\3640000 ( Direct Cost: \2800000 、 Indirect Cost:\840000 )

    This research shows that (1) protein assemblies have advantages as CO releasing molecules, (2) protein needle with optimized surface charge can accumulate on brain of larva. The future challenges, which should be addressed, are (1) ROS and NO assay of eye disc, (2) the ROS imaging, (3) assay for expression of HO and NOS, and (4) inhibitory assay of sGC activation by CO.

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  • 人工分子針の細胞膜貫通制御

    Grant number:26102513  2014.4 - 2016.3

    日本学術振興会  科学研究費助成事業  新学術領域研究(研究領域提案型)

    上野 隆史

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    Grant amount:\7020000 ( Direct Cost: \5400000 、 Indirect Cost:\1620000 )

    成果1:バクテリオファージT4から再構築された三本鎖βヘリックス針蛋白質の細胞膜貫通反応細胞は細胞膜によって外界から隔てられており、ウイルスのような天然の分子機械は、高効率かつ直接的に細胞膜を透過する。T4ファージは、gp5と呼ばれる三重鎖βヘリックス針蛋白質を用いて大腸菌の外膜に穴を開ける。近年他のファージの尾部にもβヘリックスが確認されており(図4)、細胞膜貫通反応に重要な役割を果たすと推定されているものの、実験的に細胞への取り込みを解析した例はなかった。本研究では、βヘリックスからなる人工蛋白質針β-PNが(1)エンドサイトーシスを経ない直接的な機構で赤血球に取り込まれること、(2)その取り込みに表面電荷が寄与していることを見出した。この結果は、βヘリックスの細胞膜透過反応を実験的に示した初めての例である。β-PNは細胞内分子輸送に応用可能であり、既にβ-PNによる外来物質の細胞内輸送を実現にも成功した。さらにHSAFMなどによる詳細な解析から、一分子レベルで膜透過メカニズムの検証に成功した
    成果2:金属―蛋白質針複合体を用いた効率的な細胞内一酸化炭素輸送によるNF-κB活性化
    一酸化炭素(CO)は細胞保護作用、抗炎症作用等を担うシグナル分子として機能することが報告されている。細胞内にCOを輸送するために、主に金属カルボニルからなるCO輸送分子(CORM)が用いられてきた。しかしながら、細胞内への取り込み効率の低さ、安定性の低さ等が問題視されており、COを用いたシグナル伝達制御のために、より効率的な細胞内輸送法の確立が求められている。本研究では、β-PN-Ru(CO)2複合体を用いた細胞内へのCO輸送法を確立し、転写因子であるnuclear factor-kappaB(NF-κB)の活性化に成功した。

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  • ナノ金クラスターの三次元精密集積による蛋白質ケージ触媒の開発

    Grant number:13F03343  2013.4 - 2016.3

    日本学術振興会  科学研究費助成事業  特別研究員奨励費

    上野 隆史, MAITY BASUDEV, MAITY Basudev

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    Grant amount:\2300000 ( Direct Cost: \2300000 )

    本研究では、蛋白質ケージを複数の金属錯体の反応場として利用し、タンデム反応を触媒する人工金属酵素を創製した。天然では、巨大な蛋白質ケージの孤立空間に複数種類の酵素が内包されることにより、基質や反応中間体の移動が制限され、逐次的な酵素反応を効率よく進行する。しかしながら、多段階反応を促進する蛋白質集合体の反応場としての理解はほとんど進んでいない。その理由は、異なる触媒中心を精密に配置する手法が確立されていないためである。我々はこれまで、蛋白質のケージ空間が金属触媒の反応場として極めて有効であることを示してきた。そこで、本研究では、ケージ状蛋白質フェリチン内部のアミノ酸置換により、異なる種類の金属化合物の数と三次元配置を精密に制御し、タンデム反応を触媒する人工金属酵素を創製することを目的とした。本手法により開発する人工金属酵素は、高難度物質変換を可能にする新しい反応場を提供するものと確信する。本研究では、金属触媒の三次元配置を精密に制御する反応場として、ケージ状蛋白質であるフェリチンを用い、以下について検証した。
    (1)フェリチンケージへの異種金属錯体固定化によるタンデム反応触媒の開発: 水素化反応触媒であるIrCp*錯体と鈴木カップリング触媒であるPd(allyl)錯体をフェリチン内部に固定化する。複合体のX線結晶構造解析とアミノ酸置換によるIrとPd錯体の精密配置により水素化、鈴木カップリングのタンデム反応活性と選択性を最適化した。
    (2)フェリチンケージへの金属集積反応の追跡を結晶構造解析によって達成した。

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  • 細胞機能制御を指向したガス吸着蛋白質材料の開発

    Grant number:23350080  2011

    日本学術振興会  科学研究費助成事業  基盤研究(B)

    上野 隆史

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    Grant amount:\8710000 ( Direct Cost: \6700000 、 Indirect Cost:\2010000 )

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  • 固体バイオ細孔をテンプレートとする磁性材料合成

    Grant number:22655054  2010

    日本学術振興会  科学研究費助成事業  挑戦的萌芽研究

    上野 隆史

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    Grant amount:\2900000 ( Direct Cost: \2900000 )

    本申請では、蛋白質結晶によって形成される細孔表面をアミノ酸側鎖が規則正しく配列した特異な反応場と考え、この細孔表面への精密な金属イオン集積を利用した磁性材料合成法の確立を目的とする。特に、蛋白質単結晶X線構造解析によって金属イオン集積構造を決定し、その構造を基軸に、結晶系や反応条件の違いによって細孔空間への精密な金属イオン配置を原子レベルで実現し、機能創出につなげる。それらの条件を満たす蛋白質としてリゾチームを用い、異なる結晶化条件によって作成した3種類のリゾチーム結晶CoPt磁性ナノ粒子の作成を行った。正方晶、斜方晶、単斜晶の架橋化結晶(CL-HEWL)へ、Co、Ptイオンを集積させ、その後NaBHで還元することにより、CoPt粒子を作成した。次に、SQUIDを用いてこれらCoPt・CL-HEWLsの磁化測定を行った。5Kの低温においていずれの結晶を用いた場合でもヒステリシスをともなった強磁性挙動を示すことがわかった。その磁性ナノ粒子の磁気物性の1つである保磁力が3つの結晶系によって異なり、斜方晶で最も大きい値を示すことがわかった。リゾチームを含むバッファー溶液中で同様にCoPt粒子を作成してもこのような大きな保磁力は生じない。また、従来の球状やチューブ状蛋白質内部や外部表面でのCoPtナノ粒子の保磁力に比べても大きな値となり、蛋白質結晶の特異な細孔の空間効果によって、大きな保磁力が得られ、CoPtの磁気的性質が変化することが明らかとなった。従って、蛋白質結晶空間が金属材料の機能を制御する分子テンプレートとして有用であることが示された。

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  • 配位プログラミングを実現する蛋白質空間設計

    Grant number:22108513  2010

    日本学術振興会  科学研究費助成事業  新学術領域研究(研究領域提案型)

    上野 隆史

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    Grant amount:\5720000 ( Direct Cost: \4400000 、 Indirect Cost:\1320000 )

    本研究では、金属錯体反応場とみなしたメゾスケールの蛋白質孤立空間に、アミノ酸置換による配位構造のプログラミングを施し、金属錯体の機能を制御する手法を確立する。具体的には、かご型蛋白質フェリチンの直径8nmのメゾ空間へ精密に金属錯体を集積するために、アミノ酸置換を施し、その機能発現へつなげる。このような金属錯体の機能制御法は、既存の合成分子によるナノ空間では困難であったが、かご型蛋白質フェリチンを用いることにより初めて実現可能となり、メゾスケール空間を用いた新しい配位化学の創成に貢献すると確信する。
    本年度はフェリチン内部空間の分子設計と金属イオンの一次元集積をおこなった。
    (1)一次元鎖体形成へのフェリチン変異体作成フェリチン内部空間への配位プログラミングには変異体作成が重要な鍵を握る。これまでの研究から、フェリチン内部に取り込まれた金属錯体は内部の三回対称軸チャネルと集積サイトと呼ばれる、His,Asp,Glu,Cys等の配位性アミノ酸残基が多数存在する二ヶ所の結合領域に集積する事を明らかとしている。そこで、集積サイトを基盤とし、特定の部位へ、金属イオンへ高い結合性を持つヒスチジン(イミダゾール)の導入や、アスパラギン酸やグルタミン酸(-COOH)への置換による負電荷導入を行い、カドミウムイオンを7つ連結する事に成功した。

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  • Molecular Design of Tube Proteins from Bacteriophage T4

    Grant number:20350063  2008 - 2010

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    UENO Takafumi

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    Grant amount:\19630000 ( Direct Cost: \15100000 、 Indirect Cost:\4530000 )

    In nature, there are a large number of protein assemblies with well-defined and robust nanostructures. However, it remains still difficult to artificially prepare and functionalize such assemblies as nanomaterials. We have synthesized a bio-nanotube consisting of the tubular component proteins of bacteriophage T4 by designing its quaternary structure. The results suggest that the construction of protein assemblies from component proteins of biosupramolecules can be a potential approach for development of bionanomaterials.

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  • 蛋白質結晶を用いた多細孔材料の創成

    Grant number:18655054  2006 - 2007

    日本学術振興会  科学研究費助成事業  萌芽研究

    上野 隆史

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    Grant amount:\3700000 ( Direct Cost: \3700000 )

    金属イオンと蛋白質の複合化によって誘起される化学反応は、金属酵素による触媒反応だけでなく、骨や歯等のバイオマテリアル創成の観点からも非常に興味深いターゲットである。蛋白質やペプチドを足場とした自発的な金属材料の形成はバイオミネラリゼーションと呼ばれ、高機能・低環境負荷・省エネルギー性の新しい機能性マテリアルの合成法として、近年非常に注目されており、ファージディスプレイ法等の分子生物学的手法を用いて、多くの金属材料へ高い親和性をもつペプチ・ドフラグメントも見いだされている。しかしながら、蛋白質への金属イオンの選択的集積過程や金属表面へのペプチド吸着過程を原子レベルで解明した例はない。本研究では、このような生体分子が関わる化学反応を原子レベルで直接観測する分子鋳型として、多孔性蛋白質結晶に着目した。例えば、卵白リゾチーム(HEWL)は、結晶内に20A程度の細孔を有する事が知られている。従来の多孔性材料との大きな違いは、蛋白質結晶の細孔が有機基で構成されていることに加えて、pHなどの外部刺激により、細孔表面のアミノ酸残基のコンホメーションが変化する点である。
    つまり細孔形状とサイズの多様性に、アミノ酸側鎖による細孔表面の多彩な花学環境変化を組み合わせることによって、様々な化学反応を実現できる。本研究では、細孔内でのRhイオンの特定のアミノ酸残基への結合過程を単結晶X-線構造解析によって直接追跡した。

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  • 蛋白質超分子ナノチューブを利用した機能分子の創成

    Grant number:18685019  2006 - 2007

    日本学術振興会  科学研究費助成事業  若手研究(A)

    上野 隆史

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    Grant amount:\30550000 ( Direct Cost: \23500000 、 Indirect Cost:\7050000 )

    生体超分子としてよく知られているバクテリオファージT4は、様々な機能を有する50以上もの部品蛋白質から構成されている。これらの中にはカプセルやチューブといった化学的にも非常に魅力的かつ合成困難な構造体も含まれている。我々はべ一スプレート部位に存在するgene product 27-gene product 5(gp27-gp5)三量体に着目した。この複合体の本来の機能は、大腸菌表面へつきささる針の役割であり、構造と機能が全く異なる蛋白質のヘテロ集合によって特懲的なカップ構造とチューブ構造を有する。本研究では、様々なアプローチによる、このヘテロ集合体への化学機能付与を行った。まずは、gp5ナノチェーブのC末端に金属イオンへの親和性が高いヒスチジンタグを導入し、金イオンと混合後、還元する事によって自己集積的にテトラポッド構造体が形成される事を明らかとした。さらに、gp27によって形成されるカップ空間にシステインを導入し、ヘムを化学修飾する事によって人工酵素を構築した。また、gp27/gp5の集積反応を使って異分子の配列制御も達成する事ができた。
    これらの結果は、部品蛋白質の化学基盤としての有用性を示したばかりでなく、自己集積反とくみ合わせる事によって、多彩な機能体を作成できる事を示している。

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  • 蛋白質ケージを用いた金属ナノ微粒子形成機構の解明

    Grant number:17655076  2005

    日本学術振興会  科学研究費助成事業  萌芽研究

    上野 隆史, 中島 洋

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    Grant amount:\3400000 ( Direct Cost: \3400000 )

    近年、生体分子の内部空間を利用したナノ微粒子作成技術は、バイオセンサーや電子材料などへの応用が可能なことから、大きな注目を集めている。鉄貯蔵タンパク質であるフェリチンは、24量体からなる球状構造で、外径12nm、内径8nmの空間を有する。我々はこれまでに、フェリチンの内部空間を利用してPd微粒子を作成し、Pd微粒子を触媒としたオレフィン水素化反応を実現してきた。さらに、フェリチン内部に結合する金属イオンの総数によって粒子サイズが決定することが分かったが、金属微粒子の精密なサイズ制御を行うためには、フェリチン内部空間における金属イオン集積過程を詳細に解明する必要がある。そこで、様々な濃度のPdイオンを内部に結合させたフェリチンのX線結晶構造解析によるPdイオン集積過程解明を目指し、フェリチン内部表面にPdイオンが結合する初期段階での結合サイトの決定を試みた。
    1μMのアポフェリチン溶液に、50当量のK_2PdCl_4水溶液を加え、30分室温で撹拌してPdイオンをフェリチン内部に集積させた。その後、G-200ゲル濾過カラムによりPdイオン集積フェリチンを精製し、結晶化を行った。Pdイオン集積フェリチンの結晶はCdイオン存在下でのみ得られた。従って、内部にPdイオン、Cdイオンの両者が集積している可能性が示唆された。そのため、異常分散効果を利用したX線結晶構造解析を行い、Pdイオン、Cdイオンの位置決定を試みた。その結果、1サブユニット当たり6か所、つまりフェリチン1分子あたり144か所のPd結合サイトを決定することに成功した。現在、これらの結果を投稿準備中である。

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  • Structures and functions of reaction spaces constructed using metalloprotiens

    Grant number:16074208  2004 - 2007

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research on Priority Areas

    WATANABE Yoshihito, NAKAJIMA Hiroshi, UENO Takafumi

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    Grant amount:\59000000 ( Direct Cost: \59000000 )

    Last year, we have specified the amino acid residues responsible for capturing Pd2+ ions on the interior surface of ap-ferritin by X-ray crystal structural studies. In addition, we have examined the residues which ligate to Au3+ ions and found that some of the Au ion binding sites in apo-ferritin are different from those of Pd ions with different coordi-nation structures. On the basis of these observation, we have prepared two type of metal nano-clusters, i.e., alloy and core/shell as shown in Schem 1. In the co-reduction, Au and Pd ions coexist in the apo-ferritin cage. The number of each ion in the cage is regulated by the affinity of each ions to its specific amino acid residues. Consequently, the alloy nano-particle was composed of 133 Au atoms and 165 Pd atoms ((AuPd)・apo-ferritin). On the other hand, we have successfully prepared Au-core/Pd-shell([Au] (Pd)) and Pd-core/Au-shell ([Pd] (Au)) types of nano-particles composed of 201 Au atoms/305 Pd atoms and 169 Au atoms/65Pd atoms, respectively. Among those apo-ferritin composites, [Au] (Pd) apo-ferritin shows the highest catalytic activity for the hydrogenation of olefins.
    In a separate experiment, we have examined a possible incorporation of organometallic compounds such as [Pd(allyl)C1]2 and [Rh(norbornadiene)C1]2 in apo-ferritin. The crystal structure of Pd(allyl)・apo-ferritin clearly shows that the allyl group ligates to Pd ion in apo-ferritin.

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  • 蛋白質キャビティーを反応場とする新規錯体構築法と機能制御

    Grant number:15036229  2003

    日本学術振興会  科学研究費助成事業  特定領域研究

    上野 隆史

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    Grant amount:\2000000 ( Direct Cost: \2000000 )

    近年、超分子かご状化合物の内部空間を反応場とした化学反応系の構築が注目されている.この方法を用いれば、超分子を精密に設計することで、内部空間での反応に様々な選択性を賦与することが可能となる.特に、タンパク質は精密な高次構造を形成している非常に魅力的な超分子化合物であり、これまでも、タンパク質を金属化合物と複合化する研究が報告されてきたが、その複合体による触媒反応を制御するまでには様々な問題をクリアする必要がある.そこで、本研究では球状タンパク質であるフェリチンに着目した.フェリチンは、生体内で鉄を貯蔵する働きを担い、24個のサブユニットから形成されたその構造は、外径が12nm、内部に8nmの空洞があり、ここに鉄が貯蔵される.また、フェリチンの内部と外部をつなぐチャネルとして、サブユニット同士が交差することで作り上げられた3回対称と4回対称の2種類のチャネルが存在する.これらのチャネルを通り、金属イオンや有機分子がフェリチンの内部へと進入する.そこで、フェリチン内部を利用したPdナノ粒子作成、および作成したPdナノ粒子を触媒としたサイズ選択的オレフィン水素化反応を行ったところ、CH_2=CHCONH_2の水素化反応ではTOFが71.5となり、フェリチン1分子当たりに換算すると、TOF=33,000に相当し、Pd・apo-ferritin内に一度に約5,000個の基質を取込可能であり、Pd・apo-ferritin当たりのTOFに換算すると、1時間でPd・apo-ferritin内部の基質の総入れ替えが7回生じたことがあきらかとなった.

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  • Mechanistsic Studies on the Catalase Reactions: Introduction of Catalase Activity into Heme Proteins.

    Grant number:14209019  2002 - 2005

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

    WATANABE Yoshihito, NAKAJIMA Hiroshi

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    Grant amount:\45500000 ( Direct Cost: \35000000 、 Indirect Cost:\10500000 )

    The catalase reaction has been studied in detail by using myoglobin (Mb) mutants. Compound I of Mb mutants (Mb-I), a ferryl species (Fe^<IV>=O) paired with a porphyrin radical cation, is readily prepared by the reaction with a nearly stoichiometric amount of m-chloroperbenzoic acid (mCPBA). Upon the addition of H_2O_2 to an Mb-I solution, Mb-1 is reduced back to the ferric state without forming any intermediates. This indicates that Mb-I is capable of performing two-electron oxidation of H_2O_2 (catalatic reaction). GC-MS analysis of the evolved O2 from a 50:50 mixture of H_218O_2/H_2^<16>O_2 solution containing H64D or F43H/H64L Mb showed the formation of 18O2 (m/e=36) and 16O2 (m/e = 32) but not ^<16>O^<18>O (m/e = 34). This implies that O2 is formed by two electron oxidation of H_2O_2 without breaking the O-O bond. Deuterium isotope effects on the catalatic reactions of Mb mutants and catalase suggest that the catalatic reactions of Micrococcus lysodeikticus Catalase (MLC) and F43H/H64L Mb proceed via an ionic mechanism with a small isotope effect of less than 4.0, since the distal histidine residue is located at a proper position to act as a general acid-base catalyst for the ionic reaction. In contrast, other Mb mutants such as H64X (X: A, S, and D) and L29H/H64L Mb oxidize H_2O_2 via a radical mechanism in which a hydrogen atom is abstracted by Mb-I with a large isotope effect in a range of 10 to 29, due to a lack of the general acid-base catalyst

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  • 金属錯体挿入による新規金属酵素の創製

    Grant number:13740384  2001 - 2002

    日本学術振興会  科学研究費助成事業  若手研究(B)

    上野 隆史

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    Grant amount:\2500000 ( Direct Cost: \2500000 )

    人工酵素構築の新しい方法論として、蛋白質キャビティーに合成金属錯体を挿入し、蛋白質反応場を利用して反応制御をする試みは、当初の計画を大幅に上回る成果を生み出すことが出来たので、ここにまとめる。
    1.金属錯体挿入法の確立 初期の段階における、反応条件や挿入金属錯体の決定は多数のサンプルスクリーニングが必要となる。本研究では、ESI-TOF MSによる迅速スクリーニング法を確立し、数百にのぼるサンプルの解析から、安定な複合体の決定に成功した(投稿準備中)。
    2.人工金属酵素の構造決定 反応制御をおこなう上で、構造決定は重要である。本研究では安定な複合体を形成するM(3,3'-Me_2-salphen)・apo-A71G Mb (M=Cr^<III>, Mn^<III>, and Fe^<III>)の結晶構造解析に成功し、当初の分子設計通りに錯体がミオグロビンキャビティーに挿入され、特異的な非共有結合相互作用によって固定化されていることを明らかとした(投稿準備中)。
    3.反応制御方法の確立 結晶構造解析を元に、蛋白質反応場の分子設計を支援計算ソフトInsightII/Discover3によっておこない、蛋白質アミノ酸特異的部位置換法と挿入錯体の配位子をデザインすることによって、酵素反応の向上を目指した。具体的にはCr(3,3'-Me_2-salphen)・apo-A71G Mbの結晶構造をもとに、Cr(5,5'-t-Bu_2-salphen)・apo-H64D/A71G Mbを単離し、チオアニソールの不斉酸化反応に成功した。本研究は、合成錯体を非共有結合的に蛋白質に結合し、合理的な分子設計により反応制御をおこなった世界で最初の例である(Angew. Chem. Int. Ed., 2003, 42, 1005)。
    4.今後の展望 本研究で得られた結果は、様々な金属化合物と蛋白質の複合化に利用できる。実際、生体分子の複合体システムに金属化合物を組み込んだり、蛋白質の内部で金属錯体を合成することによって、これまでにない、化学反応システムの構築を進行中である。

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  • Molecular Design of Metalloproteins

    Grant number:11228208  1999 - 2002

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research on Priority Areas

    WATANABE Yoshihito, OZAKI Shin-ichi, OGO Seiji, UENO Takafumi

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    Grant amount:\61600000 ( Direct Cost: \61600000 )

    The aromatic hydroxylation is one of the hard oxidations to proceed and we have designed a myoglobin mutant which is able to oxidize aromatic ring on the basis of the following strategies 1)Introduction of the substrate, tryptophan, at the position of phenyl alanine 43.2)Replacement of histidine 64 by asparitic acid to allow rapid reaction of the mutant with hydrogen peroxide. At the same time, Valine 68 was also replaced by isoleucine to allow hydrogen peroxide readily accessing to the active site, The oxidative modification of the protein was monitored by ESI-TOF mass measurements. Upon the addition of 1 eq. of hydrogen peroxide, 16Da increase of the molecular weight was observed. Further addition of hydrogen peroxide afforded secondary product exhibiting 32Da increase of its mass. After the digestion of the protein, a fragment including W43 was purified and characterized by MALDI TOF mass and NMR. The modified residue was W43 having 6-hydroxide. This is the first example of aromatic hydroxylation by a stoichiometric amount of hydrogen peroxide. In addition, the secondary product was characterized as 2,6-dioxo-derivative of tryptophan 43.

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  • モノオキシゲナーゼの構築-P450酸化活性種の蛋白モデルによる検証

    Grant number:11490036  1999 - 2001

    日本学術振興会  科学研究費助成事業  基盤研究(B)

    渡辺 芳人, 上野 隆史, 小江 誠司, 小崎 紳一

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    Grant amount:\14300000 ( Direct Cost: \14300000 )

    本申請者らは、ミオグロビン(Mb)をヘム蛋白質の基本骨格を提供するモデル蛋白質としてとらえ、Mbの活性中心のミューテーションによってシトクロームP450やペルオキシダーゼ機能を賦与する研究を行ってきた。その結果、酸化活性種であるMb・O=Fe^<IV>Porphyrin^<+・>(Por^<+・>)の観測に初めて成功し、オレフィンやスルフィドなどの外来基質のMb・O=Fe^<IV>Por^<+・>による酸化反応の過程が、スペクトル変化として直接観測可能であることを示した。こうした成果に基づき、本研究では、1)シトクロームP450が触媒する種々の酸化反応が、Mb・O=Fe^<IV>Por^<+・>によって進行するか?酸化生成物はP450によるものと同じか否かを検討した。
    最初に検討した反応は、スルフィドのスルフォキシドへの酸化反応である。ペルオキシダーゼの酸化活性種(O=Fe^<IV>Por^<+・>)はスルフィドの一電子酸化反応を行うのに対して、ミオグロビンのO=Fe^<IV>Por^<+・>は酸素添加反応を行うことが明らかになり、標的としたP450型の酸化反応を行うことを初めて証明した。
    次に、高難度酸化反応でありP450のみが触媒可能な芳香環の酸化反応を検討した。基質としてトリプトファンを用い、部位特異的アミノ酸置換によってフェニルアラニン43の位置にトリプトファンを導入した。酸化反応を行ったところ、トリプトファンの芳香環が予想された位置選択性で水酸化されることが明らかになり、P450以外のヘム酵素として初めての水酸化反応が達成できた。

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