title: Structure of the reaction center from Rhodobacter sphaeroides R-26: the cofactors.
abstract: The three-dimensional structure of the cofactors of the reaction center of Rhodobacter sphaeroides R-26 has been determined by x-ray diffraction and refined at a resolution of 2.8 A with an R value of 26%. The main features of the structure are similar to the ones determined for Rhodopseudomonas viridis [Michel, H., Epp, O. & Deisenhofer, J. (1986) EMBO J. 5, 2445-2451]. The cofactors are arranged along two branches, which are approximately related to each other by a 2-fold symmetry axis. The structure is well suited to produce light-induced charge separation across the membrane. Most of the structural features predicted from physical and biochemical measurements are confirmed by the x-ray structure.
authors.forename: J P
authors.initials: JP
authors.lastname: Allen
authors.forename: G
authors.initials: G
authors.lastname: Feher
authors.forename: T O
authors.initials: TO
authors.lastname: Yeates
authors.forename: H
authors.initials: H
authors.lastname: Komiya
authors.forename: D C
authors.initials: DC
authors.lastname: Rees
mesh_terms: D001426:Bacterial Proteins; D003198:Computer Simulation; D008565:Membrane Proteins; D008956:Models, Chemical; D045322:Photosynthetic Reaction Center Complex Proteins; D011487:Protein Conformation; D012242:Rhodobacter sphaeroides; D014961:X-Ray Diffraction
chemical_list: D001426:Bacterial Proteins; D008565:Membrane Proteins; D045322:Photosynthetic Reaction Center Complex Proteins