STRUCTURE OF THE REACTION CENTER FROM RHODOBACTER-SPHAEROIDES R-26 - THE COFACTORS .1.
STRUCTURE OF THE REACTION CENTER FROM RHODOBACTER-SPHAEROIDES R-26 - THE COFACTORS .1.
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DOI：
10.1073/pnas.84.16.5730
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发表时间：
1987-08-01
影响因子：
11.1
通讯作者：
REES, DC
中科院分区：
文献类型：
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作者：
ALLEN, JP;FEHER, G;REES, DC
球形红细菌R-26的反应中心的辅因子的三维结构已通过X-射线衍射测定，并在2.8埃的分辨率下精制。R值为26%。该结构的主要特征类似于对绿色红球藻确定的特征[Michel，H.，Epp，O.和Deisenhofer，J.（1986）EMBO J.5，2445-2451]。辅因子沿沿着两个分支排列，这两个分支通过2重对称轴彼此近似相关。该结构非常适合于在整个膜上产生光致电荷分离。大多数的结构特征预测从物理和生化测量证实了X射线结构。
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 .ANG. 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. and 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.