A functional model for O-O bond formation by the O2-evolving complex in photosystem II
A functional model for O-O bond formation by the O2-evolving complex in photosystem II
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DOI：
10.1126/science.283.5407.1524
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发表时间：
1999-03-05
期刊：
影响因子：
56.9
通讯作者：
Brudvig, GW
中科院分区：
文献类型：
--
作者：
Limburg, J;Vrettos, JS;Brudvig, GW
光合作用中水分子氧的形成由光系统 II 催化，其活性位点包含四个锰离子，这些锰离子以二-mu-氧代二锰单元排列（其中 mu 是桥接模式）。合成并表征了配合物[H2O(terpy)Mn(O)(2)Mn(terpy)OH2](NO3)(3)（terpy为2,2':6',2"-三联吡啶），其含有二-mu-氧锰二聚体，可催化次氯酸钠转化为分子氧。Oxygen-18同位素标记表明水是分子氧中氧原子的来源进化，因此该系统是光合水氧化的功能模型。
The formation of molecular oxygen from water in photosynthesis is catalyzed by photosystem II at an active site containing four manganese ions that are arranged in di-mu-oxo dimanganese units (where mu is a bridging mode). The complex [H2O(terpy)Mn(O)(2)Mn(terpy)OH2](NO3)(3) (terpy is 2,2':6',2 "-terpyridine), which was synthesized and structurally characterized, contains a di-mu-oxo manganese dimer and catalyzes the conversion of sodium hypochlorite to molecular oxygen. Oxygen-18 isotope labeling showed that water is the source of the oxygen atoms in the molecular oxygen evolved, and so this system is a functional model for photosynthetic water oxidation.