title: Primary electron transfer kinetics in bacterial reaction centers with modified bacteriochlorophylls at the monomeric sites BA,B.
abstract: The primary electron transfer has been investigated by femtosecond time-resolved absorption spectroscopy in two chemically modified reaction centers (RC) of Rhodobacter sphaeroides, in which the monomeric bacteriochlorophylls BA and BB have both been exchanged by 13(2)-hydroxybacteriochlorophyll a or [3-vinyl]-13(2)-hydroxybacteriochlorophyll a. The kinetics of the primary electron transfer are not influenced by the 13(2)-hydroxy modification. In RCs containing [3-vinyl]-13(2)-hydroxybacteriochlorophyll a the primary rate is reduced by a factor of 10.
authors.affiliation: Physik Department, Technischen Universität München, Germany.
authors.forename: U
authors.initials: U
authors.lastname: Finkele
authors.forename: C
authors.initials: C
authors.lastname: Lauterwasser
authors.forename: A
authors.initials: A
authors.lastname: Struck
authors.forename: H
authors.initials: H
authors.lastname: Scheer
authors.forename: W
authors.initials: W
authors.lastname: Zinth
mesh_terms: D001429:Bacteriochlorophylls / Q000737:chemistry* / Q000378:metabolism; D001665:Binding Sites; D004579:Electron Transport; D007700:Kinetics; D010084:Oxidation-Reduction; D010788:Photosynthesis; D012242:Rhodobacter sphaeroides; D013057:Spectrum Analysis; D013329:Structure-Activity Relationship
chemical_list: D001429:Bacteriochlorophylls