Subunit Proteins of Photosystem I |
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Authors: | Ikeuchi Masahiko |
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Institution: | Solar Energy Research Group, RIKEN (The Institute of Physical and Chemical Research) Wako, Saitama, 351-01 Japan |
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Abstract: | Photosystem I (PS I) is a supramolecular complex in thylakoidmembranes and mediates the light-driven electron flow from plastocyanin(or cytochrome c553) to ferredoxin. It has been establishedthat the PS I complex consists of more than 10 different subunitproteins that ligate 100 to 200 molecules of chlorophylls includingP700, two molecules of phylloquinone and three iron-sulfur centers(FX, FA, FB). The identity and properties of these PS I subunitproteins have been extensively studied, and their genes haverecently been cloned and mutagenized. The current status ofthese investigations is summarized. (Received May 8, 1992; ) |
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