绿硫细菌光合反应中心复合体的原子结构

doi:10.3969/j.issn.0253-9608.2021.03.004

摘要/Abstract

摘要： 绿硫细菌是一类厌氧光合细菌，能够利用光能以硫化物为电子供体进行非产氧光合作用。绿硫细菌的光反应系统由捕光天线绿小体、能量传递体FMO蛋白和反应中心三部分构成。文章主要介绍用冷冻电镜解析的绿硫细菌FMO蛋白-反应中心复合体的原子结构、基于结构推测的复合体内部的能量传递机制和它们对早期光反应中心进化的启示。

关键词: 绿硫细菌, 光合作用, 反应中心复合体, 能量传递, 结构生物学

Abstract: Green sulfur bacteria are strictly anaerobic photosynthetic bacteria, and perform anoxygenic photosynthesis by obtaining electrons from sulfides. The photosynthetic light-reaction system of green sulfur bacteria consists of a peripheral light-harvesting antenna called chlorosome, an energy transmitter FMO protein and the reaction center complex. In this paper, we describe the atomic structure of the FMO-reaction center complex from a green sulfur bacterium solved by cryo-electron microscopy, insight into the energy transfer mechanism within the complex based on the structure obtained, and their implications on the evolution of early photoreaction systems.

陈景华, 匡廷云, 沈建仁, 张兴. 绿硫细菌光合反应中心复合体的原子结构[J]. 自然杂志, 2021, 43(3): 189-198.

CHEN Jinghua, KUANG Tingyun, SHEN Jianren, ZHANG Xing. Atomic structure of the photosynthetic reaction center from a green sulfur bacterium[J]. Chinese Journal of Nature, 2021, 43(3): 189-198.

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