[Theoretical study of the kinetics of dark reduction of photochemically oxidized bacteriochlorophyll in the reaction center of Rhodospirillum rubrum chromatophores]. 1976

N F Pyt'eva, and A A Kononenko, and A I Ratyni, and E P Lukashev, and A B Rubin

It is shown from the results of theoretical study that the scheme involving two successive interacting components of the pool of secondary acceptors shows the biexponential character of the kinetics of dark reduction of the pigment of P870 observed in the experiment. The velocity constants of the electron transport reactions considered are evaluated.

UI MeSH Term Description Entries
D010084 Oxidation-Reduction A chemical reaction in which an electron is transferred from one molecule to another. The electron-donating molecule is the reducing agent or reductant; the electron-accepting molecule is the oxidizing agent or oxidant. Reducing and oxidizing agents function as conjugate reductant-oxidant pairs or redox pairs (Lehninger, Principles of Biochemistry, 1982, p471). Redox,Oxidation Reduction
D010777 Photochemistry A branch of physical chemistry which studies chemical reactions, isomerization and physical behavior that may occur under the influence of visible and/or ultraviolet light. Photochemistries
D002734 Chlorophyll Porphyrin derivatives containing magnesium that act to convert light energy in photosynthetic organisms. Phyllobilins,Chlorophyll 740
D003624 Darkness The absence of light. Darknesses
D001429 Bacteriochlorophylls Pyrrole containing pigments found in photosynthetic bacteria. Bacteriochlorophyll
D012247 Rhodospirillum rubrum Vibrio- to spiral-shaped phototrophic bacteria found in stagnant water and mud exposed to light.

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