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（S<sub>0</sub>→S<sub>4</sub>）. 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 Ca<sup>2+</sup> and Cl<sup>-</sup>, 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-
基金
Project supported by the National Natural Science Foundation of China.
