title: The polarization model in bacterial photosynthesis.
abstract: The widely accepted model of reaction center /RC/ functioning is proved to come into contradiction with some recent data. In particular, it cannot explain why only a minor part of electronic excitations (approximately 10%) escapes from excited RC special pairs back to antenna BChls. Therefore we believe that the model must be substantially modernized. In 1981 we developed a new model/1,2/. We suggested a femtosecond state to precede primary e-transfer reaction due to reorientation of water molecule dipole in the electric field of excited RC dimer. This mechanism is responsible for energy trapping before the primary e-transport occurs. During last years his mechanism got support from various experimental works. Now this polarization model claims to fit all reliable experimental data at least in bacterial photosynthesis.
authors: A. N. Belozersky Institute of Physico-Chemical Biology, Moscow State University.
authors: Borisov AYu
authors: M V
authors: MV
authors: Fok
mesh_terms: D001419:Bacteria / Q000737:chemistry*; D005454:Fluorescence Polarization; D007700:Kinetics; D008956:Models, Chemical; D010788:Photosynthesis; D013997:Time Factors; D014867:Water / Q000737:chemistry
chemical_list: D014867:Water