Plant and Cell Physiology, 1992, Vol. 33, No. 6 669-676
© 1992
Mini Review |
Subunit Proteins of Photosystem I
Solar Energy Research Group, RIKEN (The Institute of Physical and Chemical Research) Wako, Saitama, 351-01 Japan
Photosystem I (PS I) is a supramolecular complex in thylakoid membranes and mediates the light-driven electron flow from plastocyanin (or cytochrome c553) to ferredoxin. It has been established that the PS I complex consists of more than 10 different subunit proteins that ligate 100 to 200 molecules of chlorophylls including P700, two molecules of phylloquinone and three iron-sulfur centers (FX, FA, FB). The identity and properties of these PS I subunit proteins have been extensively studied, and their genes have recently been cloned and mutagenized. The current status of these investigations is summarized.
(Received May 8, 1992; )
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