Evidence for a specific role of CI^- in keeping the functional organization of Mn complex in PSⅡ  

作　　者：王俊 杨立 刘中立 梁厚果 杜林方 

机构地区：[1]State Key Laboratory of Applied Organic Chemistry. Lanzhou University, Lanzhou 730000, China [2]Department of Biology, Sichuan University, Chengdu 610064, China

出　　处：《Chinese Science Bulletin》1995年第11期945-948,共4页

基　　金：Project supported by the National Natural Science Foundation of China.

摘　　要：The formation of molecular oxygen from water by PSⅡ is supposed to occur by meansof a linear, four-electron oxidation process involving five so-called S-state intermediates（S₀→S₄）. The Mn-cluster is considered to be ligated to the PSⅡ reaction centerpolypeptides, but for its functioning, 43 and 47ku chlorophyll proteins, three peripheralproteins of 17, 23 and 33 ku need to be associated with the lumenal surface of thylakoidmembranes. These proteins, together with Ca²⁺ and Cl^-, play a regulatory role in the effi-<正> The formation of molecular oxygen from water by PSⅡ is supposed to occur by meansof a linear, four-electron oxidation process involving five so-called S-state intermediates（S0→S4）. The Mn-cluster is considered to be ligated to the PSⅡ reaction centerpolypeptides, but for its functioning, 43 and 47ku chlorophyll proteins, three peripheralproteins of 17, 23 and 33 ku need to be associated with the lumenal surface of thylakoidmembranes. These proteins, together with Ca2+and Cl-, play a regulatory role in the effi-

关 键 词：MN complex oxygen-evolution CI^- photoactivation. 

分 类 号：O621[理学—有机化学]