| ID | 57820 |
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| Author |
Suga, Michihiro
Research Institute for Interdisciplinary Science and Graduate School of Natural Science and Technology, Okayama University
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Akita, Fusamichi
Research Institute for Interdisciplinary Science and Graduate School of Natural Science and Technology, Okayama University
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Yamashita, Keitaro
RIKEN SPring-8 Center
Nakajima, Yoshiki
Research Institute for Interdisciplinary Science and Graduate School of Natural Science and Technology, Okayama University
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Ueno, Go
RIKEN SPring-8 Center
Li, Hongjie
Research Institute for Interdisciplinary Science and Graduate School of Natural Science and Technology, Okayama University
Yamane, Takahiro
Research Institute for Interdisciplinary Science and Graduate School of Natural Science and Technology, Okayama University
Hirata, Kunio
RIKEN SPring-8 Center
Umena, Yasufumi
Research Institute for Interdisciplinary Science and Graduate School of Natural Science and Technology, Okayama University
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Yonekura, Shinichiro
Research Institute for Interdisciplinary Science and Graduate School of Natural Science and Technology, Okayama University
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Yu, Long-Jiang
Research Institute for Interdisciplinary Science and Graduate School of Natural Science and Technology, Okayama University
Murakami, Hironori
Japan Synchrotron Radiation Research Institute
Nomura, Takashi
RIKEN SPring-8 Center
Kimura, Tetsunari
Department of Chemistry, Graduate School of Science, Kobe University
Kubo, Minoru
RIKEN SPring-8 Center
Baba, Seiki
Japan Synchrotron Radiation Research Institute
Kumasaka, Takashi
Japan Synchrotron Radiation Research Institute
Tono, Kensuke
RIKEN SPring-8 Center
Yabashi, Makina
RIKEN SPring-8 Center
Isobe, Hiroshi
Research Institute for Interdisciplinary Science and Graduate School of Natural Science and Technology, Okayama University
Yamaguchi, Kizashi
The Institute for Scientific and Industrial Research, Osaka University
Yamamoto, Masaki
RIKEN SPring-8 Center
Ago, Hideo
RIKEN SPring-8 Center
Shen, Jian-Ren
Research Institute for Interdisciplinary Science and Graduate School of Natural Science and Technology, Okayama University
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| Abstract | Photosynthetic water oxidation is catalyzed by the Mn4CaO5 cluster of photosystem II (PSII) with linear progression through five S-state intermediates (S0 to S4). To reveal the mechanism of water oxidation, we analyzed structures of PSII in the S1, S2, and S3 states by x-ray free-electron laser serial crystallography. No insertion of water was found in S2, but flipping of D1 Glu189 upon transition to S3 leads to the opening of a water channel and provides a space for incorporation of an additional oxygen ligand, resulting in an open cubane Mn4CaO6 cluster with an oxyl/oxo bridge. Structural changes of PSII between the different S states reveal cooperative action of substrate water access, proton release, and dioxygen formation in photosynthetic water oxidation.
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| Note | This is the author’s version of the work. It is posted here by permission of the AAAS for personal
use, not for redistribution. The definitive version was published in [An oxyl/oxo mechanism for oxygen-oxygen coupling in PSII revealed by an x-ray free-electron laser] on 2019 Oct 18;366(6463), DOI: 10.1126/science.aax6998
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| Published Date | 2019-10-18
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| Publication Title |
Science
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| Volume | volume366
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| Issue | issue6463
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| Publisher | American Association for the Advancement of Science
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| Start Page | 334
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| End Page | 338
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| ISSN | 0036-8075
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| NCID | AA00835277
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| Content Type |
Journal Article
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| language |
English
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| OAI-PMH Set |
岡山大学
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| File Version | author
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| Related Url | isVersionOf https://doi.org/10.1126/science.aax6998
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