The structure of the Mn4Ca2+ cluster of photosystem II and its protein environment as revealed by X-ray crystallography

被引：44

作者：

Barber, James ^{[1
]}

Murray, James W. ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Div Mol Biosci, London SW7 2AZ, England

来源：

PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES | 2008年 / 363卷 / 1494期

基金：

英国生物技术与生命科学研究理事会;

关键词：

photosystem II; structure; X-ray diffraction; manganese cluster; models; oxygen-evolving complex;

D O I：

10.1098/rstb.2007.2208

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The location, structure and protein environment of the Mn4Ca2+ cluster, which catalyses the light-driven, water-splitting reaction of photosystem II, has been revealed by X-ray crystallography. However, owing to the low resolutions of the crystal structures reported to date, and the possibility of radiation damage at the catalytic centre, the precise position of each metal ion remains unknown. To some extent, these problems have been overcome by applying spectroscopic techniques like extended X-ray absorption fine structure. Taking into account the most recent results obtained with these two X-ray-based techniques, we have attempted to refine models of the structure of the Mn4Ca2+ cluster and its protein environment.

引用

页码：1129 / 1137

页数：9

共 43 条

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