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Photoelectric studies of the transmembrane charge transfer reactions in photosystem I pigment‐protein complexes
Author(s) -
Semenov Alexey Yu,
Mamedov Mahir D,
Chamorovsky Sergey K
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)01032-9
Subject(s) - plastocyanin , p700 , photosystem i , chemistry , photosynthetic reaction centre , photochemistry , electron transfer , electron acceptor , cytochrome b6f complex , photosystem , acceptor , light harvesting complexes of green plants , ferredoxin , photosystem ii , photosynthesis , organic chemistry , biochemistry , physics , condensed matter physics , enzyme
The results of studies of charge transfer in cyanobacterial photosystem I (PS I) using the photoelectric method are reviewed. The electrogenicity in the PS I complex and its interaction with natural donors (plastocyanin, cytochrome c 6 ), natural acceptors (ferredoxin, flavodoxin), or artificial acceptors and donors (methyl viologen and other redox dyes) were studied. The operating dielectric constant values in the vicinity of the charge transfer carriers in situ were calculated. The profile of distribution of the dielectric constant along the PS I pigment–protein complex (from plastocyanin or cytochrome c 6 through the chlorophyll dimer P700 to the acceptor complex) was estimated, and possible mechanisms of correlation between the local dielectric constant and electron transfer rate constant were discussed.