Plant and Cell Physiology · 1992 · 42 citations · 0 references
Life SciencesBiochemistryPlant BiologyPhotosynthesisPlant BiochemistryPlant Molecular BiologyChloroplast BiochemistryChloroplast StructurePhotosynthesis BiochemistryPhotosynthetic Energy ConversionPhotosynthetic Energy TransferPhotosystem IPhotosynthetic Complex AssemblyPhotosynthetic Electron FlowPhotosystem I Core ComplexPhotosystem I OrganizationPhotosystem I StructurePhotosystem I Subunit CompositionSubunit AssemblyThylakoid Organization
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.