Structural basis for energy transfer in a huge diatom PSI-FCPI supercomplex
文献类型：期刊论文
| 作者 | Xu, Caizhe3; Pi, Xiong; Huang, Yawen; Han, Guangye; Chen, Xiaobo1; Qin, Xiaochun6; Huang, Guoqiang; Zhao, Songhao3; Yang, Yanyan; Kuang, Tingyun |
| 刊名 | NATURE COMMUNICATIONS
 |
| 出版日期 | 2020 |
| 卷号 | 11期号:1 |
| ISSN号 | 2041-1723 |
| DOI | 10.1038/s41467-020-18867-x |
| 文献子类 | Article |
| 英文摘要 | Diatom is an important group of marine algae and contributes to around 20% of the global photosynthetic carbon fixation. Photosystem I (PSI) of diatoms is associated with a large number of fucoxanthin-chlorophyll a/c proteins (FCPIs). We report the structure of PSI-FCPI from a diatom Chaetoceros gracilis at 2.38 angstrom resolution by single-particle cryo-electron microscopy. PSI-FCPI is a monomeric supercomplex consisting of 12 core and 24 antenna subunits (FCPIs), and 326 chlorophylls a, 34 chlorophylls c, 102 fucoxanthins, 35 diadinoxanthins, 18 beta -carotenes and some electron transfer cofactors. Two subunits designated PsaR and PsaS were found in the core, whereas several subunits were lost. The large number of pigments constitute a unique and huge network ensuring efficient energy harvesting, transfer and dissipation. These results provide a firm structural basis for unraveling the mechanisms of light-energy harvesting, transfer and quenching in the diatom PSI-FCPI, and also important clues to evolutionary changes of PSI-LHCI. Diatoms are marine algae with an important role in global photosynthetic carbon fixation. Here, the authors present the 2.38 angstrom cryo-EM structure of photosystem I (PSI) in complex with its 24 fucoxanthin chlorophyll a/c-binding (FCPI) antenna proteins from the diatom Chaetoceros gracilis, which provides mechanistic insights into light-energy harvesting, transfer and quenching of the PSI-FCPI supercomplex. |
| 学科主题 | Multidisciplinary Sciences |
| 出版地 | BERLIN |
| WOS关键词 | FUCOXANTHIN-CHLOROPHYLL-PROTEINS ; PHOTOSYSTEM-I SUPERCOMPLEX ; LIGHT-HARVESTING COMPLEX ; TRANSFER PATHWAYS ; BINDING PROTEINS ; EVOLUTION ; GENOME ; ALGA |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| 出版者 | NATURE RESEARCH |
| WOS记录号 | WOS:000581918200012 |
| 资助机构 | National Key R&D Program of China [2017YFA0503700, 2017YFA0504600, 2019YFA0906300, 2016YFA0501101] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31970260, 31600191, 31861143048, 31670745] ; Strategic Priority Research Program of CAS [XDB17000000] ; CAS Key Research Program for Frontier Science [QYZDY-SSW-SMC003] ; Youth Innovation Promotion Association of CAS [2020081] |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/21542]  |
| 专题 | 中科院光生物学重点实验室 |
| 作者单位 | 1.Tsinghua Univ, Sch Life Sci, Frontier Res Ctr Biol Struct, Beijing 100084, Peoples R China 2.Okayama Univ, Grad Sch Nat Sci & Technol, Okayama 7008530, Japan 3.Chinese Acad Sci, Inst Bot, Photosynthesis Res Ctr, Key Lab Photobiol, Beijing 100093, Peoples R China 4.Univ Chinese Acad Sci, Yuquan Rd, Beijing 100049, Peoples R China 5.Tsinghua Univ, Beijing Adv Innovat Ctr Struct Biol, State Key Lab Membrane Biol, Beijing 100084, Peoples R China 6.Hebei Univ Sci & Technol, Sch Biol Sci & Engn, Shijiazhuang 050018, Hebei, Peoples R China 7.Jinan Univ, Sch Biol Sci & Technol, Jinan 250022, Peoples R China 8.Southen Univ Sci & Technol, Dept Biol, Shenzhen 518055, Guangdong, Peoples R China 9.Okayama Univ, Res Inst Interdisciplinary Sci, Okayama 7008530, Japan |
| 推荐引用方式 GB/T 7714 | Xu, Caizhe,Pi, Xiong,Huang, Yawen,et al. Structural basis for energy transfer in a huge diatom PSI-FCPI supercomplex[J]. NATURE COMMUNICATIONS,2020,11(1). |
| APA | Xu, Caizhe.,Pi, Xiong.,Huang, Yawen.,Han, Guangye.,Chen, Xiaobo.,...&Shen, Jian-Ren.(2020).Structural basis for energy transfer in a huge diatom PSI-FCPI supercomplex.NATURE COMMUNICATIONS,11(1). |
| MLA | Xu, Caizhe,et al."Structural basis for energy transfer in a huge diatom PSI-FCPI supercomplex".NATURE COMMUNICATIONS 11.1(2020). |
入库方式： OAI收割
来源：植物研究所
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