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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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Citing This Article：

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).