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Structure and function of photosystem I: interaction with its soluble electron carriers and external antenna systems
Author(s) -
Fromme Petra,
Melkozernov Alexander,
Jordan Patrick,
Krauss Norbert
Publication year - 2003
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/s0014-5793(03)01124-4
Subject(s) - cytochrome b6f complex , electron transfer , ferredoxin , photosystem i , plastocyanin , flavodoxin , electron transport chain , chemistry , p700 , photochemistry , biophysics , electron acceptor , photosystem ii , photosynthesis , biochemistry , biology , enzyme
Photosystem I (PS I) is a large membrane protein complex that catalyzes the first step of solar conversion, the light‐induced transmembrane electron transfer, and generates reductants for CO 2 assimilation. It consists of 12 different proteins and 127 cofactors that perform light capturing and electron transfer. The function of PS I includes inter‐protein electron transfer between PS I and smaller soluble electron transfer proteins. The structure of PS I is discussed with respect to the potential docking sites for the soluble electron acceptors, ferredoxin/flavodoxin, at the stromal side and the soluble electron donors, cytochrome c 6 /plastocyanin, at the luminal side of the PS I complex. Furthermore, the potential interaction sites with the peripheral antenna proteins are discussed.