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植物光系统Ⅱ放氧复合体外周蛋白结构和功能的研究进展

于勇, 翁俊, 徐春和

中科院上海生命科学研究院植物生理研究所.上海 200032

摘要

光合放氧是植物光系统Ⅱ(PSⅡ)的重要功能之一。PSⅡ的放氧反应主要是由PSⅡ氧化侧的4个锰原子组成的锰簇催化的。在类囊体膜的囊腔侧还结合有若干个外周蛋白,对放氧反应起着重要作用。文章总结了植物光系统Ⅱ外周蛋白的结构和功能研究方面的最新进展。

关键词： 光系统II; 放氧; 外周蛋白

The progress in the investigation on the structure and function of the extrinsic proteins of photosystem II

Yu Yong, Weng Jun, Xu Chunhe

Institute of Plant Physiology,Shanghai Institute of Biological Sciences,Chinese Academy of Sciences.Shanghai 200032

Abstract

In green plants, oxygen evolution is one of the most important physiological function of photosystem II (PSII). A manganese cluster composed of four manganese atoms plays a crucial role in the oxygen evolution at the donor side of photosystem II. Meanwhile, several extrinsic proteins, binding at the lumen side of the membrane, are also necessary for efficient oxygen evolution by PSII. In this review, the progress in the research on the structure and function of extrinsic proteins, expecially the 33 kD extrinsic protein, was presented. Table 1 includes relative structure information obtained from far-UV CD, FTIR and secondary structure prediction on the 33 kD extrinsic protein in solution. Figure 1 shows a hypothetical model of the folding structure of the 33 kD extrinsic protein.

Key words: Photosyste m1l;Oxygen evolution;Extrinsic proteins

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引用本文：

于勇, 翁俊, 徐春和. 植物光系统Ⅱ放氧复合体外周蛋白结构和功能的研究进展[J]. 生理学报 2001; 53 (6): .

Yu Yong, Weng Jun, Xu Chunhe. The progress in the investigation on the structure and function of the extrinsic proteins of photosystem II. Acta Physiol Sin 2001; 53 (6): (in Chinese with English abstract).