球形红杆菌R-26反应中心的结构：辅因子
Structure of the reaction center from Rhodobacter sphaeroides R-26: the cofactors.
作者信息
Allen J P, Feher G, Yeates T O, Komiya H, Rees D C
出版信息
Proc Natl Acad Sci U S A. 1987 Aug;84(16):5730-4. doi: 10.1073/pnas.84.16.5730.
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.
摘要
球形红细菌R-26反应中心辅因子的三维结构已通过X射线衍射确定，并在2.8埃分辨率下进行了精修，R值为26%。该结构的主要特征与绿假单胞菌的结构相似[米歇尔，H.，埃普，O. & 戴森霍费尔，J.（1986年）《欧洲分子生物学组织杂志》5，2445 - 2451]。辅因子沿两个分支排列，这两个分支通过一个二重对称轴大致相互关联。该结构非常适合在膜上产生光诱导电荷分离。从物理和生化测量预测的大多数结构特征都得到了X射线结构的证实。
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