光合细菌反应中心中电荷复合反应的构象调控
Conformational regulation of charge recombination reactions in a photosynthetic bacterial reaction center.
作者信息
Katona Gergely, Snijder Arjan, Gourdon Pontus, Andréasson Ulf, Hansson Orjan, Andréasson Lars-Erik, Neutze Richard
机构信息
Chalmers University of Technology, Department of Chemistry and Bioscience, PO Box 462, SE-405 30 Göteborg, Sweden.
出版信息
Nat Struct Mol Biol. 2005 Jul;12(7):630-1. doi: 10.1038/nsmb948. Epub 2005 Jun 5.
In bright light the photosynthetic reaction center (RC) of Rhodobacter sphaeroides stabilizes the P(+)(870).Q(-)(A) charge-separated state and thereby minimizes the potentially harmful effects of light saturation. Using X-ray diffraction we report a conformational change that occurs within the cytoplasmic domain of this RC in response to prolonged illumination with bright light. Our observations suggest a novel structural mechanism for the regulation of electron transfer reactions in photosynthesis.
在强光下，球形红杆菌的光合反应中心（RC）会稳定P(+)(870).Q(-)(A)电荷分离状态，从而将光饱和的潜在有害影响降至最低。我们利用X射线衍射报告了该反应中心细胞质结构域在强光长时间照射下发生的构象变化。我们的观察结果提示了一种光合作用中电子转移反应调控的新结构机制。
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