Structure and function of photosystem I: interaction with its soluble electron carriers and external antenna systems

FEBS Letters

Fromme, Petra²  Melkozernov, Alexander²  Jordan, Patrick³  Krauss, Norbert¹ 

[1] Institut für Biochemie, Universitätsklinikum Charité, Medizinische Fakultät der Humboldt Universität zu Berlin, Monbijoustraße 2, 10117 Berlin, Germany;Department of Chemistry and Biochemistry, Arizona State University, P.O. Box 871604, Tempe, AZ 85287-1604, USA;Kristallographie, Institut für Chemie im Fachbereich Biologie, Chemie, Pharmazie, Freie Universität Berlin, Takustraße 6, 14195 Berlin, Germany

关键词: Photosynthesis;    Photosystem I;    Ferredoxin;    Plastocyanin;    Antenna;   

DOI  :  10.1016/S0014-5793(03)01124-4

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

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 CO₂ 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.

【 授权许可】

Unknown