Serdenko T. Photoinduced changes in the integral parameters of the structure of the reaction centers of the bacteria Rhodobacter sphaeroides during electron transfer

The object of study: photostimulated isolated reaction centers of purple bacteria Rhodobacter sphaeroides. Purpose: to determine the features of the kinetics of cyclic electron transfer and the effects of self-regulation, to establish the features of structural changes of reaction centers, to develop methods for analyzing the latent parameters of these processes. Research methods: electron adsorption spectroscopy; mathematical modeling and computer analysis. Scientific novelty: it is shown that the structure of the reaction center can be described by a system of four electron-conformational states, parameters of the conformational-nonequilibrium state in the process of photoexcitation are determined, a protocol for studying the dynamics of structural changes of reaction centers two opposite mechanisms that affect the kinetics of electron transfer. The practical significance of the obtained results: understanding of electron-conformational changes during electron transfer in the process of photosynthesis can contribute to the creation of artificial electron transfer systems.