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首页> 外文期刊>FEBS Letters >Direct and indirect electron transfer from cytochromes c and c 2 to the photosynthetic reaction center in pigment‐protein complexes isolated from Rhodocyclus gelatinosus
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Direct and indirect electron transfer from cytochromes c and c 2 to the photosynthetic reaction center in pigment‐protein complexes isolated from Rhodocyclus gelatinosus

机译：直接和间接电子从细胞色素c和c 2转移到从明胶红景天分离的色素-蛋白质复合物中的光合作用反应中心

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>Electron transfer from soluble cytochromes c and c 2 to the photo-oxidized bacteriochlorophyll dimer was studied in photosynthetic reaction center (RC) complexes and RC-B870 complexes isolated from Rhodocyclus gelatinosus. In the RC-B870 complex which consists of 6 polypeptides including a bound cytochrome subunit, cytochrome c from horse heart or cytochrome c 2, from R. gelatinosus was oxidized by photo-oxidized bacteriochlorophyll dimer indirectly via cytochrome c-555 in the complex. In the RC complex which is composed of two polypeptides, the oxidized bacteriochlorophyll dimer was reduced directly by the soluble cytochromes. Although direct electron transfer from soluble cytochrome does not function in R. gelatinosus in vivo, it would replace indirect electron donation if the bound cytochrome were lost mutationally.
机译：在光合作用中心（RC）中研究了电子从可溶性细胞色素 c 和 c 2 转移到光氧化的细菌叶绿素二聚体 Rhodocyclus gelatinosus 中分离出的RC-B870和RC-B870复合物。在由6种多肽组成的RC-B870复合物中，包括结合的细胞色素亚基，来自马心脏的细胞色素 c 或来自<心> 2的细胞色素 c 2 em> R。络合物中的细胞色素 c -555通过光氧化的细菌叶绿素二聚体间接氧化明胶。在由两个多肽组成的RC络合物中，可溶的细胞色素直接还原了氧化的细菌叶绿素二聚体。尽管来自可溶性细胞色素的直接电子转移在 R中不起作用。明胶体内，如果结合的细胞色素突变丢失，它将替代间接的电子捐赠。

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