An oxyl/oxo mechanism for oxygen-oxygen coupling in PSII revealed by an x-ray free-electron laser-Reference-Cited by-同舟云学术

An oxyl/oxo mechanism for oxygen-oxygen coupling in PSII revealed by an x-ray free-electron laser

Published:2019-10-18 Issue:6463 Volume:366 Page:334-338
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Suga Michihiro¹²^ORCID,Akita Fusamichi¹²^ORCID,Yamashita Keitaro³^ORCID,Nakajima Yoshiki¹^ORCID,Ueno Go³^ORCID,Li Hongjie¹⁴^ORCID,Yamane Takahiro¹^ORCID,Hirata Kunio³^ORCID,Umena Yasufumi¹,Yonekura Shinichiro¹^ORCID,Yu Long-Jiang¹^ORCID,Murakami Hironori⁵,Nomura Takashi³⁴^ORCID,Kimura Tetsunari⁶^ORCID,Kubo Minoru³⁴^ORCID,Baba Seiki⁵^ORCID,Kumasaka Takashi⁵^ORCID,Tono Kensuke³⁵^ORCID,Yabashi Makina³⁵^ORCID,Isobe Hiroshi¹^ORCID,Yamaguchi Kizashi⁷⁸,Yamamoto Masaki³^ORCID,Ago Hideo³^ORCID,Shen Jian-Ren¹^ORCID

Affiliation:

1. Research Institute for Interdisciplinary Science and Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushima Naka, Okayama 700-8530, Japan.

2. Japan Science and Technology Agency, PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan.

3. RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan.

4. Department of Picobiology, Graduate School of Life Science, University of Hyogo, 3-2-1 Kouto, Kamigori-cho, Ako-gun, Hyogo 678-1297, Japan.

5. Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo, Hyogo 679-5198, Japan.

6. Department of Chemistry, Graduate School of Science, Kobe University, 1-1 Rokkodai, Nada-ku, Kobe 657-8501, Japan.

7. The Institute for Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan.

8. Institute for Nanoscience Design, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan.

Abstract

Inspecting S states in photosynthesis Oxygenic photosynthesis uses a Mn 4 CaO 5 cluster in the oxygen-evolving complex to extract electrons from water and produce dioxygen. Visualizing each of the chemical states in this process, S 0 to S 4 , and assigning chemical identities and mechanisms on the basis of structures has been a challenge addressed recently by work at x-ray free-electron lasers. Suga et al. used serial crystallography at cryogenic temperatures to trap and determine the structures of several stable states during photosystem II water oxidation (see the Perspective by Britt and Marchiori). Changes around the water cluster already happen in the S 2 state and set the stage for water insertion that occurs during transition to the S 3 state. A short 1.9-angstrom distance between the two oxygen atoms in the S 3 state is consistent with theoretical studies supporting an oxyl/oxo mechanism for oxygen-oxygen coupling. Science , this issue p. 334 ; see also p. 305

Funder

RIKEN

JSPS

JST, PREST

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference44 articles.

1. The Structure of Photosystem II and the Mechanism of Water Oxidation in Photosynthesis

2. Biological Water Oxidation

3. COOPERATION OF CHARGES IN PHOTOSYNTHETIC O2EVOLUTION–I. A LINEAR FOUR STEP MECHANISM