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Mn₂Ca双金属簇合物组装去Mn光系统II水氧化复合物的研究

Studies on the Reconstitution of the Water-Oxidizing Complex in Manganese-depleted Photosystem II with Mn₂Ca Complex

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【Author】 LING, Lina CHEN, Gui-Yinga WANG, Wen-Guob CHEN, Huib LI, Shu-Qin*,a CHEN, Chang-Nengb LIU, Qiu-Tianb KUANG, Ting-Yuna (a Photosynthesis Research Center, Key Laboratory of Photosynthesis and Environmental Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093) (b State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002)

【机构】中国科学院植物研究所光合中心光合作用和环境分子生理重点实验室；中国科学院福建物质结构研究所结构化学重点实验室；中国科学院植物研究所光合中心光合作用和环境分子生理重点实验室北京100093；北京100093；福州350002；

【摘要】报道了Mn2Ca双金属簇合物与去锰的PSII颗粒的光组装过程,发现Mn2Ca化合物具有明显的恢复去锰PSII的电子传递和放氧活性的能力,并且表现了比MnCl2更高的光组装效率.我们认为该化合物中Ca与Mn原子之间的羧酸酯桥的连接方式可能有利于水氧化复合物(WOC)的光组装及锰簇的稳定.更多还原

【Abstract】 The reconstitution of water-oxidizing complex (WOC) with a Mn2Ca mixed metal complex in manganese-depleted photosystem II was for the first time reported. The Mn2Ca complex was shown to be more effective in restoring electron transfer and oxygen evolution capacity during photoactivation in comparison with that of MnCl2. It was proposed that the carboxylato bridge between the Ca and Mn atoms may benefit the formation and stability of the Mn cluster.更多还原