2009 Fiscal Year Final Research Report
Metal Ion Specificity, Four-Electron Reduction of Dioxygen, and Creation of Functions of a Multicopper Oxidase Involved in Detoxification of Copper
| Project/Area Number |
19350081
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Chemistry related to living body
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| Research Institution | Kanazawa University |
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Principal Investigator |
SAKURAI Takeshi Kanazawa University, 物質化学系, 教授 (90116038)
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| Project Period (FY) |
2007 – 2009
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| Keywords | マルチ銅オキシダーゼ / CueO / ビリルビンオキシダーゼ / 酸素4電子還元 |
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| Research Abstract |
銅排出酵素系において特異的にCu(I)を酸化する酵素CueOから50残基のアミノ酸を除去し,有機基質に対する酸化活性を創製するとともに,触媒部位への配位アミノ酸への変異導入や水素結合の切断や形成によって、触媒機能を高めることに成功した。また,CueOの組換え体および変異体を,生物燃料電池のカソード触媒やヘアカラー色素作成酵素としての利用することを可能とした。さらに,変異体の反応によって,酸素の4電子還元機構を明らかにし,反応に関与する非配位性の酸性アミノ酸を特定した。
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[Journal Article] Four-Electron Reduction of Dioxygen by a Multicopper Oxidase, CueO, and Roles of Asp112 and Glu506 Located Adjacent to the Trinuclear Copper Center2009
Author(s)
Kataoka, K., Sugiyama, R., Hirota, S., Inoue, M., Urata, K., Minagawa, Y., Seo, D., Sakurai, T.
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Journal Title
J. Biol. Chem. 284
Pages: 14405-14413
Peer Reviewed
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[Journal Article] Modification of Spectroscopic Properties and Catalytic Activity of Escherichia coli CueO by Mutations of Methionine 510, the Axial Ligand to the Type I Cu2009
Author(s)
Kurose, S., Kataoka, K., Shinohara, N, Miura, Y., Tsutsumi, M., Tsujimura, S., Kano, K., Sakurai, T.
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Journal Title
Bull. Chem. Soc. Jpn. 82
Pages: 504-508
Peer Reviewed
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[Journal Article] Direct Electrochemistry of CueO and Its Mutants at Residues to and near Type I Cu for Oxygen-Reducing Biocathode2009
Author(s)
Miura, Y., Tsujimura, S., Kurose, S., Kamitaka, Y., Kataoka, K., Sakurai, T., Kano, K.
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Journal Title
Fuel Cells 9
Pages: 70-78
Peer Reviewed
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[Journal Article] Structure and Function of the Engineered Multicopper Oxidase, CueO from Escherichia coli-Deletion of the Methionine-Rich Helical Region Covering the Substrate Binding Site-2007
Author(s)
Kataoka, K., Komori, H., Ueki, Y., Konno, Y., Kamitaka, Y., Kurose, S. Tsujimura, S., Higuchi, Y., Kano, K., Seo, D., Sakurai, T.
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Journal Title
J. Mol. Biol. 373
Pages: 141-152
Peer Reviewed
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[Journal Article] Effect of Axial Ligand Mutation of the Type I Copper Site in Bilirubin Oxidase on Direct Electron Transfer-Type Bioelectrocatalytic Reduction of Dioxigen2007
Author(s)
Kamitaka, Y., Tsujimura, S., Kataoka, K. Sakurai, T., Ikeda, T., Kano, K.
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Journal Title
Electoanal. Chem. 601
Pages: 119-124
Peer Reviewed
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[Presentation] Modifications in the Redox Potential of the Type I Cu Center of CueO by the Mutations on the Coordinating and Non-Coordinating Amino Acids2009
Author(s)
Kataoka, K., Maeda, Y., Kurose, S., Sekimoto, M., Shinohara, N., Tsutsumi, M., Miura, Y., Tsujimura, S., Kano, K., Sakurai, T.
Organizer
14th International Conference on Bioinorganic Chemistry
Place of Presentation
Nagoya International Congress Center (Japan)
Year and Date
20090725-20070927
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[Presentation] Reduction of Dioxygen by a Multicopper Oxidase, CueO, and Roles of Asp112 and Glu506 Located Adjacent to the Trinuclear Copper Center2009
Author(s)
Sakurai, T., Kataoka, K., Sugiyama, R., Hirota, S., Inoue, M., Urata, K., Minagawa, Y., Seo, D.
Organizer
14th International Conference on Bioinorganic Chemistr
Place of Presentation
Nagoya International Congress Center (Japan)
Year and Date
2009-07-25
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[Presentation] Bioelectrocatalytic Reduction of O2 Catalyzed by Multi-Copper Oxidase CueO and Its Mutants2008
Author(s)
Tsujimura, S., Miura, Y., Kamitaka, Y., Kurose, S., Kataoka, K., Sakurai, T., Kano, K.
Organizer
214th The Electrochemical Society Meeting
Place of Presentation
Honolulu (USA)
Year and Date
20081012-20081017
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[Presentation]2008
Author(s)
Tomoyori, K., Niimura, N., Sakurai, T., Kataoka, K., Kurose, S., Higuchi, Y., Komori, H., Kajino, T.
Organizer
21th Congress of the International Union of Crystallography
Place of Presentation
saka International Convention Center(Japan)
Year and Date
20080823-20080831
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[Presentation]2008
Author(s)
杉山良輔, 浦田香苗, 井上めぐみ, 片岡邦重, 櫻井武
Organizer
第18回金属の関与する生体関連反応シンポジウム
Place of Presentation
名古屋市立大学(愛知県)
Year and Date
20080605-20080606
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[Presentation]2008
Author(s)
Tsujimura, S., Miura, Y., Kamitaka, Y., Kurose, S., Kataoka, K., Sakurai, T., Kano, K.
Organizer
213th The Electrochemical Society Meeting
Place of Presentation
Phoenix (USA)
Year and Date
20080518-20080513
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[Presentation] マルチ銅オキシダーゼCueO変異体のx線構造解析2007
Author(s)
小森博文, 片岡邦重, 植木優作, 今野佑介, 上高雄二, 黒瀬伸治, 辻村清也, 加納健司, 瀬尾悌介, 櫻井武, 樋口芳樹
Organizer
日本結晶学会2007年度年会
Place of Presentation
東京工業大学(神奈川県)
Year and Date
20071201-20071202
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