Structural insights into photosynthetic cyclic electron transport  

作　　者：Shumeng Zhang Baohua Zou Peng Cao Xiaodong Su Fen Xie Xiaowei Pan Mei Li 

机构地区：[1]National Laboratory of Biomacromolecules,CAS Center for Excellence in Biomacromolecules,Institute of Biophysics,Chinese Academy of Sciences,Beijing,China [2]University of Chinese Academy of Sciences,Beijing,China [3]Faculty of Environment and Life,Beijing University of Technology,Beijing,China [4]College of Life Science,Capital Normal University,Beijing,China

出　　处：《Molecular Plant》2023年第1期187-205,共19页分子植物（英文版）

基　　金：Strategic Priority Research Program of CAS(XDB27020106);National Natural Science Foundation of China(31930064,32011530168,32070259,32171183,and 31970264);CAS Project for Young Scientists in Basic Research(#YSBR-015);Youth Innovation Promotion Association at the Chinese Academy of Sci-ences(2018123);National Laboratory of Biomacromolecules(2020kf05).

摘　　要：During photosynthesis,light energy is utilized to drive sophisticated biochemical chains of electron transfers,converting solar energy into chemical energy that feeds most life on earth.Cyclic electron transfer/flow(CET/CEF)plays an essential role in efficient photosynthesis,as it balances the ATP/NADPH ratio required in various regulatory and metabolic pathways.Photosystem I,cytochrome b6f,and NADH dehydrogenase(NDH)are large multisubunit protein complexes embedded in the thylakoid membrane of the chloroplast and key players in NDH-dependent CEF pathway.Furthermore,small mobile electron carriers serve as shuttles for electrons between these membrane protein complexes.Efficient electron transfer requires transient interactions between these electron donors and acceptors.Structural biology has been a powerful tool to advance our knowledge of this important biological process.A number of structures of the membrane-embedded complexes,soluble electron carrier proteins,and transient complexes composed of both have now been determined.These structural data reveal detailed interacting patterns of these electron donor-acceptor pairs,thus allowing us to visualize the different parts of the electron transfer process.This review summarizes the current state of structural knowledge of three membrane complexes and their interaction patterns with mobile electron carrier proteins.

关 键 词：PHOTOSYNTHESIS cyclic electron transfer/flow structure protein complex electron carrier INTERACTION 

分 类 号：O62[理学—有机化学]