title: Effect of protein relaxation on electron transfer from the cytochrome subunit to the bacteriochlorophyll dimer in Rps. sulfoviridis reaction centers within mixed adiabatic/nonadiabatic model.
abstract: The broad set of nonexponential electron transfer (ET) kinetics in reaction centers (RC) from Rhodopseudomonas sulfoviridis in temperature range 297-40 K are described within a mixed adiabatic/nonadiabatic model. The key point of the model is the combination of Sumi-Marcus and Rips-Jortner approaches which can be represented by the separate contributions of temperature-independent vibrational (v) and temperature-dependent diffusive (d) coordinates to the preexponential factor, to the free energy of reaction DeltaG=DeltaG(v)+DeltaG(d)(T) and to the reorganization energy lambda=lambda(v)+lambda(d)(T). The broad distribution of protein dielectric relaxation times along the diffusive coordinate is considered within the Davidson-Cole formalism.
authors: Institute of Problems of Chemical Physics RAS, Chernogolovka, 142432 Moscow region, Russia. kotel@icp.ac.ru
authors: A I
authors: AI
authors: Kotelnikov
authors: J M
authors: JM
authors: Ortega
authors: E S
authors: ES
authors: Medvedev
authors: B L
authors: BL
authors: Psikha
authors: D
authors: D
authors: Garcia
authors: P
authors: P
authors: Mathis
mesh_terms: D001426:Bacterial Proteins / Q000737:chemistry*; D001429:Bacteriochlorophylls / Q000737:chemistry*; D003580:Cytochromes / Q000737:chemistry*; D019281:Dimerization; D007700:Kinetics; D008956:Models, Chemical; D012241:Rhodopseudomonas / Q000737:chemistry*; D013816:Thermodynamics
chemical_list: D001426:Bacterial Proteins; D001429:Bacteriochlorophylls; D003580:Cytochromes