| Literature DB >> 21678923 |
Ivan Rivalta1, Muhamed Amin, Sandra Luber, Serguei Vassiliev, Ravi Pokhrel, Yasufumi Umena, Keisuke Kawakami, Jian-Ren Shen, Nobuo Kamiya, Doug Bruce, Gary W Brudvig, M R Gunner, Victor S Batista.
Abstract
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.Entities:
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Year: 2011 PMID: 21678923 PMCID: PMC3140697 DOI: 10.1021/bi200685w
Source DB: PubMed Journal: Biochemistry ISSN: 0006-2960 Impact factor: 3.162