Reorganization energies of the electron transfer reactions involving quinones in the reaction center of Rhodobacter sphaeroides

摘要: In framework of the continuum electrostatics theory, reorganization energies electron transfers QA−–QB (fast phase), Bph−–QA, P+–QA−, and P+–QB− in photosynthetic bacterial reaction center have been calculated. The calculations were based on static dielectric permittivity spatial distribution derived from data electrogenesis, with corresponding characteristic times relatively close to phase) Bph−–QA but much shorter than those latter two recombination reactions. calculated reasonably experimental estimates for substantially lower P+–QA− P+–QB−. A higher effective contributes this effect, dominant contribution is most probably made by a non-dielectric relaxation, especially influenced proton transfer. This situation calls reconsidering current transfer rate estimates.