title: Effects of freezing out protein vibrational modes on electron transfer kinetics in bacterial reaction centers.
abstract: We propose a model that some vibrational modes of the protein in bacterial photosynthetic reaction centers may be frozen at low temperatures. The freezing of the protein-environmental motion can affect the electron transfer rate through changes in the reorganization energy and the free energy gap. We offer a qualitative explanation of the different kinetics of the ET processes in reaction centers which are cooled in the dark and cooled under illumination.
authors.affiliation: Department of Physics, Nagoya University, Furocho, Chikusa-ku, 464-01, Nagoya, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Kakitani
authors.forename: N
authors.initials: N
authors.lastname: Mataga