Smith Janet L, Zhang Huamin, Yan Jiusheng, Kurisu Genji, Cramer William A
Department of Biological Sciences, 915 West State Street, Purdue University, West Lafayette, Indiana 47907-2054, USA.
Curr Opin Struct Biol. 2004 Aug;14(4):432-9. doi: 10.1016/j.sbi.2004.06.004.
The atomic-level picture of transmembrane protein complexes in the photosynthetic membrane has now been completed by the recent publication of crystal structures of cytochrome b(6)f and photosystem II. The two structures of cytochrome b(6)f, together with previously reported structures of the cytochrome bc(1) respiratory complex, provide a basis for understanding the central electron and proton transfer events of photosynthesis and respiration. The protein structures and charge transfer events within the core of the complexes are highly similar, but the complexes differ in subunit and chromophore composition in proportion to the distance from the central redox site within the membrane near the electropositive side.
细胞色素b(6)f和光系统II晶体结构的近期发表，现已完成了光合膜中跨膜蛋白复合物的原子水平图像。细胞色素b(6)f的这两种结构，与先前报道的细胞色素bc(1)呼吸复合物结构一起，为理解光合作用和呼吸作用的核心电子和质子转移事件提供了基础。复合物核心内的蛋白质结构和电荷转移事件高度相似，但这些复合物在亚基和发色团组成上有所不同，这与它们距膜内靠近正电侧的中央氧化还原位点的距离成比例。
