Structural-Functional Role of Chloride in Photosystem II

Ivan Rivalta*, 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

*Bijbehorende auteur voor dit werk

OnderzoeksoutputAcademicpeer review

98 Citaten (Scopus)

Samenvatting

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 angstrom 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.

Originele taal-2English
Pagina's (van-tot)6312-6315
Aantal pagina's4
TijdschriftBiochemistry
Volume50
Nummer van het tijdschrift29
DOI's
StatusPublished - 26-jul-2011
Extern gepubliceerdJa

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