Studies on the proton pump mechanism of the terminal oxidase by time resolved analyses at the hydrogen atom level resolution
Project/Area Number |
26291033
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Partial Multi-year Fund |
Section | 一般 |
Research Field |
Biophysics
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Research Institution | University of Hyogo |
Principal Investigator |
Yoshikawa Shinya 兵庫県立大学, 生命理学研究科, 名誉教授 (40068119)
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Co-Investigator(Renkei-kenkyūsha) |
ISHIMORI Koichiro 北海道大学, 大学院理学系研究院, 教授 (20192487)
TATENO Masaru 兵庫県立大学, 大学院生命理学研究科, 教授 (40291926)
SHINZAWA Kyoko (ITOH Kyoko) 兵庫県立大学, 大学院生命理学研究科, 准教授 (70206316)
KUBO Minoru 独立行政法人理化学研究所, 城生体金属科学研究室, 研究員 (90392878)
TAMADA Tarou 独立行政法人日本原子力研究開発機構, 量子ビーム応用研究部門, 研究主幹 (50391248)
MISAKI Tomonori 兵庫県立大学, 大学院物質理学研究科, 助教 (00411786)
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Project Period (FY) |
2014-04-01 – 2017-03-31
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Project Status |
Completed (Fiscal Year 2016)
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Budget Amount *help |
¥16,640,000 (Direct Cost: ¥12,800,000、Indirect Cost: ¥3,840,000)
Fiscal Year 2016: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2015: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2014: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
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Keywords | 呼吸鎖末端酸化酵素 / プロトンポンプ / 膜タンパク質 / ヘムタンパク質 / 時分割X線構造解析 / 時分割X線構造解析 / チトクロム酸化酵素 / ミトコンドリアエネルギー変換 / 振動分光解析 / 電子構造生物学 |
Outline of Final Research Achievements |
Cytochrome c oxidase, which is one of the most important enzymes for preserving the Life, reduces molecular oxygen (O2) coupled with proton pumping which creates the proton gradient for driving ATP synthesis by FoF1 ATPase. By using the X-ray free electron laser facility, we have succeeded in (i) determination of the O2 reduction site and (ii) showing that the pumping proton back leak is blocked by O2 binding to a copper ion site included in the O2 reduction site. The O2 reduction site structure has been yet to be determined for the last 50 years. The latter accomplishment together with the former set a mile stone for elucidation of the mechanism of this enzyme at the hydrogen atom level resolution which is a dream of most of Life Scientist.
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Report
(4 results)
Research Products
(67 results)
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[Journal Article] Osuda Y, Shinzawa-Itoh K, Tani K, Maeda S, Yoshikawa S, Tsukihara T, Gerle C.2016
Author(s)
Osuda Y, Shinzawa-Itoh K, Tani K, Maeda S, Yoshikawa S, Tsukihara T, Gerle C.
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Journal Title
Microscopy
Volume: 65
Issue: 3
Pages: 263-267
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
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[Journal Article] The Mg2+-containing Water Cluster of Mammalian Cytochrome c Oxidase Collects Four Pumping Proton Equivalents in Each Catalytic Cycle2016
Author(s)
Yano N, Muramoto K, Shimada A, Takemura S, Baba J, Fujisawa H, Mochizuki M, Shinzawa-Itoh K, Yamashita E, Tsukihara T, Yoshikawa S.
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Journal Title
J. Biol. Chem.
Volume: 291
Issue: 46
Pages: 23882-23894
DOI
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Journal Article] Higdla is a oositive regulaator of cytochrome c oxidase2015
Author(s)
T. Hayashi, Y. Asano, Y. Shintani, H. Aoyama, H. Kioka, O. Tsukamoto, M. Hikita, K. Shinzawa-Itoh, K. Takajuji, S. Higo, H. Kato, S. Yamazaki, K. Matsuoka, A. Nakano, H. Asanuma, M. Asakura, T. Minamino, Y. Goto, T. Ogura, M. Kitakaze, I. Komuro, Y. Sakata, T. Tsukihara, S. Yoshikawa, S. Takashima
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Journal Title
Proc. Nat. Acad. Sci. U.S.A.
Volume: 112
Issue: 5
Pages: 1553-1558
DOI
Related Report
Peer Reviewed / Open Access
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[Journal Article] Determination of damage-free crystal structure of an X-ray sensitive protein using an XFEL2014
Author(s)
Hirata K, Shinzawa-Itoh K, Yano N, Takemura S, Kato K, Hatanaka M, Muramoto K, Kawahara T, Tsukihara T, Yamashita E, Tono K, Ueno G, Hikima T, Murakami H, Inubushi Y, Yabashi M, Ishikawa T, Yamamoto M, Ogura T, Sugimoto H, Shen J-R, Yoshikawa S, Ago H
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Journal Title
Nature Methods
Volume: 11
Issue: 7
Pages: 734-736
DOI
Related Report
Peer Reviewed
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[Presentation] Time resolved crystallographic analysis of cytochrome c oxidase using X-ray free electron laser2016
Author(s)
Keita Hatano, Atsuhiro Shimada, Akari Miyamoto, Seiki Baba, Keitaro Yamashita, Minoru Kubo, Hideo Ago, Kunio Hirata, Go Ueno, Hironori Murakami, Masaki Yamamoto, Takashi Kumasaka, Eiki Yamashita, Takashi Ogura, Kyoko Shinzawa-Itoh, Shinya Yoshikawa, Tomitake Tsukihara
Organizer
日本蛋白質科学会第16回年会
Place of Presentation
福岡国際会議場(福岡県・福岡市)
Year and Date
2016-06-07
Related Report
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[Presentation] Collection of 4 pumping-proton equivalents into Mg2+-containing water cluster of cytochrome c oxidase, revealed by X-ray analyses2015
Author(s)
S. Yoshikawa, N. Yano, A. Shimada, K. Muramoto, S. Takemura, K. Shinzawa-Itoh, E. Yamashita, T. Tsukihara
Organizer
Bioenergetics, Gordon Research Conferences
Place of Presentation
Procter Academy Andover, NH (USA)
Year and Date
2015-06-21
Related Report
Int'l Joint Research
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[Presentation] チトクロムc とチトクロム酸化酵素複合体のX 線結晶構造解析2014
Author(s)
Satoru Shimada, Kyoko Shinzawa-Itoh, Shimpei Aoe, Atsuhiro Shimada, Jumpei Baba, Syuhei Takemura, Eiki Yamashita, Tomitake Tsukihara, Shinya Yoshikawa
Organizer
第52回日本生物物理学会
Place of Presentation
札幌コンベンションセンター(北海道・札幌市)
Year and Date
2014-09-27
Related Report
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[Presentation] チトクローム酸化酵素の反応初期過程における共役機構の解明2014
Author(s)
Satoru Nakashima, Minoru Kubo, Izumi Ishigami, Kyoko Itoh-Shinzawa, Shinya Yoshikawa, Takashi Ogura
Organizer
第52回日本生物物理学会
Place of Presentation
札幌コンベンションセンター(北海道・札幌市)
Year and Date
2014-09-26
Related Report
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[Presentation] アジ化物結合型チトクロム酸化酵素の高分解能 X 線結晶構造解析によるアジ化物結合様式の解析2014
Author(s)
Atsuhiro Shimada, Masahide Hikita, Hitomi Tadehara, Akima Yamamoto, Eiki Yamashita, Kyoko Shinzawa-Itoh, Tomoko Maeda, Tomitake Tsukihara, Shinya Yoshikawa
Organizer
第52回日本生物物理学会
Place of Presentation
札幌コンベンションセンター(北海道・札幌市)
Year and Date
2014-09-25
Related Report
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