Photo-Assembly of the Catalytic Manganese Cluster

Photo-Assembly of the Catalytic Manganese Cluster
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催化锰簇的光组装

DOI:
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发表时间:
2005
期刊:
影响因子:
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通讯作者:
R. K. Watt
R. K. Watt
中科院分区:
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文献类型:
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作者:
G. Dismukes;G. Ananyev;R. K. Watt

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本文综述了光系统Ⅱ(PS Ⅱ)水氧化复合物的生物起源,重点介绍了原核生物和叶绿体内膜系统中各亚基的组装顺序和位置。讨论了锰在蓝藻细胞中的吸收和分布。单独的PS II中的光诱导组装的水分解复合物的无机核心的亚基的作用进行了讨论(光活化过程)。无机辅因子(Mn 2+,Ca 2+,Cl和碳酸氢盐)在水裂解的作用揭示了通过检查它们与非天然辅因子重建的影响。描述了用于测量O2浓度以及光活化动力学和机理的新型仪器。
The biogenesis of the Photosystem II (PS II) water oxidizing complex is reviewed with emphasis on the sequence and location of assembly of the subunits within the internal membrane systems of prokaryotes and chloroplasts. The uptake and distribution of manganese in cyanobacterial cells are discussed. The role of individual subunits in isolated PS II in light-induced assembly of the inorganic core of the water splitting complex is discussed (photoactivation process). The roles of the inorganic cofactors (Mn2+, Ca2+, Cl and bicarbonate) in water splitting are revealed by examining the effects of their reconstitution with non-native cofactors. Novel instrumentation for the measurement of O2 concentration and the kinetics and mechanism of photoactivation are described.
DOI: 10.1021/bi981847z
发表时间: 1999-01
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影响因子: 2.9
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