start-ver=1.4 cd-journal=joma no-vol=39 cd-vols= no-issue= article-no= start-page=46 end-page=53 dt-received= dt-revised= dt-accepted= dt-pub-year=2016 dt-pub=201608 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Structure and energy transfer pathways of the plant photosystem I-LHCI supercomplex en-subtitle= kn-subtitle= en-abstract= kn-abstract=Photosystem I (PSI) is one of the two photosystems in oxygenic photosynthesis, and absorbs light energy to generate reducing power for the reduction of NADP+ to NADPH with a quantum efficiency close to 100%. The plant PSI core forms a supercomplex with light-harvesting complex I (LHCI) with a total molecular weight of over 600 kDa. Recent X-ray structure analysis of the PSI-LHCI membrane-protein supercomplex has revealed detailed arrangement of the light-harvesting pigments and other cofactors especially within LHCI. Here we introduce the overall structure of the PSI-LHCI supercomplex, and then focus on the excited energy transfer (EET) pathways from LHCI to the PSI core and photoprotection mechanisms based on the structure obtained. en-copyright= kn-copyright= en-aut-name=SugaMichihiro en-aut-sei=Suga en-aut-mei=Michihiro kn-aut-name=菅倫寛 kn-aut-sei=菅 kn-aut-mei=倫寛 aut-affil-num=1 ORCID= en-aut-name=QinXiaochun en-aut-sei=Qin en-aut-mei=Xiaochun kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=KuangTingyun en-aut-sei=Kuang en-aut-mei=Tingyun kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=ShenJian-Ren en-aut-sei=Shen en-aut-mei=Jian-Ren kn-aut-name=沈建仁 kn-aut-sei=沈 kn-aut-mei=建仁 aut-affil-num=4 ORCID= affil-num=1 en-affil=Research Institute for Interdisciplinary Science, Graduate School of Natural Science and Technology, Okayama University kn-affil=岡山大学異分野基礎科学研究所 affil-num=2 en-affil=Research Institute for Interdisciplinary Science, Graduate School of Natural Science and Technology, Okayama University kn-affil=岡山大学異分野基礎科学研究所 affil-num=3 en-affil=Photosynthesis Research Center, Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences kn-affil= affil-num=4 en-affil=Research Institute for Interdisciplinary Science, Graduate School of Natural Science and Technology, Okayama University kn-affil=岡山大学異分野基礎科学研究所 END