Structural–Functional Role of Chloride in Photosystem II
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- Ivan Rivalta
- Department of Chemistry, Yale University, New Haven, Connecticut 06520-8107, United States
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- Muhamed Amin
- Department of Physics, J-419, City College of New York, 138th Street, Convent Avenue, New York, New York 10031, United States
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- Sandra Luber
- Department of Chemistry, Yale University, New Haven, Connecticut 06520-8107, United States
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- Serguei Vassiliev
- Department of Biological Sciences, Brock University, 500 Glenridge Avenue, St. Catherines, ON LS2 3A1, Canada
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- Ravi Pokhrel
- Department of Chemistry, Yale University, New Haven, Connecticut 06520-8107, United States
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- Yasufumi Umena
- Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita-shi, Osaka 565-0871, Japan
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- Keisuke Kawakami
- Department of Chemistry, Graduate School of Science, and The OCU Advanced Research Institute for Natural Science and Technology (OCARINA), Osaka City University, Sumiyoshi, Osaka 558-8585, Japan
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- Jian-Ren Shen
- Division of Bioscience, Graduate School of Natural Science and Technology/Faculty of Science, Okayama University, 1-1, Naka 3-chome, Tsushima, Okayama 700-8530, Japan
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- Nobuo Kamiya
- Department of Chemistry, Graduate School of Science, and The OCU Advanced Research Institute for Natural Science and Technology (OCARINA), Osaka City University, Sumiyoshi, Osaka 558-8585, Japan
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- Doug Bruce
- Department of Biological Sciences, Brock University, 500 Glenridge Avenue, St. Catherines, ON LS2 3A1, Canada
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- Gary W. Brudvig
- Department of Chemistry, Yale University, New Haven, Connecticut 06520-8107, United States
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- M. R. Gunner
- Department of Physics, J-419, City College of New York, 138th Street, Convent Avenue, New York, New York 10031, United States
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- Victor S. Batista
- Department of Chemistry, Yale University, New Haven, Connecticut 06520-8107, United States
説明
Chloride binding in photosystem II (PSII) is essential for photosynthetic water oxidation. However, the functional roles of chloride and possible binding sites, during oxygen evolution, remain controversial. This paper examines the functions of chloride based on its binding site revealed in the X-ray crystal structure of PSII at 1.9 Å resolution. We find that chloride depletion induces formation of a salt bridge between D2-K317 and D1-D61 that could suppress the transfer of protons to the lumen.
収録刊行物
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- Biochemistry
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Biochemistry 50 (29), 6312-6315, 2011-06-27
American Chemical Society (ACS)
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詳細情報 詳細情報について
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- CRID
- 1360283691598484736
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- ISSN
- 15204995
- 00062960
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- HANDLE
- 11585/673916
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- PubMed
- 21678923
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