title: A kinetic completion of the cyclic photosynthetic electron pathway of Rhodopseudomonas sphaeroides: cytochrome b-cytochrome c2 oxidation-reduction.
abstract: In Rhodopseudomonas sphaeroides, following a single-turnover flash of light, cytochrome c2 is oxidized by reaction center bacteriochlorophyll, and a cytochrome b is reduced by the primary electron acceptor, probably via ubiquinone. In this report we show that, in the uncoupled state, the rate of re-oxidation of the cytochrome b is identical to the rate of reduction of the cytochrome c2, a kinetic completion of the cyclic photosynthetic electron transport system.
mesh_terms: D000968:Antimycin A / Q000494:pharmacology; D020130:Bacterial Chromatophores / Q000378:metabolism; D001429:Bacteriochlorophylls / Q000378:metabolism; D003574:Cytochrome c Group / Q000378:metabolism*; D003580:Cytochromes / Q000378:metabolism*; D004579:Electron Transport; D007700:Kinetics; D010084:Oxidation-Reduction; D010788:Photosynthesis; D012242:Rhodobacter sphaeroides / Q000378:metabolism*; D013053:Spectrophotometry
chemical_list: D001429:Bacteriochlorophylls; D003574:Cytochrome c Group; D003580:Cytochromes; D000968:Antimycin A