- EMDB-30012: Organization and energy transfer in a huge diatom PSI-FCPI superc... -
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基本情報
登録情報
データベース: EMDB / ID: EMD-30012
タイトル
Organization and energy transfer in a huge diatom PSI-FCPI supercomplex
マップデータ
diatom PSI-FCPI
試料
複合体: a huge diatom PSI-FCPI supercomplex
タンパク質・ペプチド: x 33種
リガンド: x 13種
キーワード
diatom / PSI-FCPI / photosysyem / photosynthesis
機能・相同性
機能・相同性情報
light-harvesting complex / photosynthesis, light harvesting in photosystem I / photosynthesis, light harvesting / chloroplast thylakoid lumen / photosystem I reaction center / photosystem I / photosynthetic electron transport in photosystem I / photosystem I / plastid / chlorophyll binding ...light-harvesting complex / photosynthesis, light harvesting in photosystem I / photosynthesis, light harvesting / chloroplast thylakoid lumen / photosystem I reaction center / photosystem I / photosynthetic electron transport in photosystem I / photosystem I / plastid / chlorophyll binding / chloroplast thylakoid membrane / response to light stimulus / photosynthesis / chloroplast / phosphoprotein binding / 4 iron, 4 sulfur cluster binding / electron transfer activity / oxidoreductase activity / metal ion binding / identical protein binding / membrane 類似検索 - 分子機能
4Fe-4S dicluster domain / Photosystem I PsaM, reaction centre superfamily / Photosystem I PsaM, reaction centre / Photosystem I protein M (PsaM) / Photosystem I PsaL, reaction centre subunit XI / Photosystem I, reaction centre subunit XI / Photosystem I PsaL, reaction centre subunit XI superfamily / Photosystem I reaction centre subunit XI / Photosystem I reaction centre subunit VIII / Photosystem I reaction centre subunit VIII ...4Fe-4S dicluster domain / Photosystem I PsaM, reaction centre superfamily / Photosystem I PsaM, reaction centre / Photosystem I protein M (PsaM) / Photosystem I PsaL, reaction centre subunit XI / Photosystem I, reaction centre subunit XI / Photosystem I PsaL, reaction centre subunit XI superfamily / Photosystem I reaction centre subunit XI / Photosystem I reaction centre subunit VIII / Photosystem I reaction centre subunit VIII / Photosystem I reaction centre subunit VIII superfamily / Photosystem I PsaF, reaction centre subunit III / Photosystem I PsaF, reaction centre subunit III superfamily / Photosystem I reaction centre subunit III / Photosystem I PsaD / Photosystem I, reaction centre subunit PsaD superfamily / PsaD / Photosystem I PsaE, reaction centre subunit IV / Photosystem I PsaJ, reaction centre subunit IX superfamily / Photosystem I reaction centre subunit IV / PsaE / Chlorophyll A-B binding protein, plant and chromista / Photosystem I PsaJ, reaction centre subunit IX / Photosystem I reaction centre subunit IX / PsaJ / Chlorophyll A-B binding protein / Chlorophyll A-B binding protein / Photosystem I protein PsaC / Photosystem I PsaB / Photosystem I PsaA / Photosystem I PsaA/PsaB, conserved site / Photosystem I psaA and psaB proteins signature. / : / Photosystem I PsaA/PsaB / Photosystem I PsaA/PsaB superfamily / Photosystem I psaA/psaB protein / Electron transport accessory-like domain superfamily / 4Fe-4S ferredoxin, iron-sulphur binding, conserved site / 4Fe-4S ferredoxin-type iron-sulfur binding region signature. / 4Fe-4S ferredoxin-type iron-sulfur binding domain profile. / 4Fe-4S ferredoxin-type, iron-sulphur binding domain 類似検索 - ドメイン・相同性
Not-an-Elip / Fucoxanthin chlorophyll a/c protein 1 / Fucoxanthin chlorophyll a/c protein 11 / Fucoxanthin chlorophyll a/c protein 8 / photosystem I / PSI subunit V / Fucoxanthin chlorophyll a/c protein 10 / Photosystem I P700 chlorophyll a apoprotein A1 / Fucoxanthin chlorophyll a/c protein 6 / Photosystem I reaction center protein 28 ...Not-an-Elip / Fucoxanthin chlorophyll a/c protein 1 / Fucoxanthin chlorophyll a/c protein 11 / Fucoxanthin chlorophyll a/c protein 8 / photosystem I / PSI subunit V / Fucoxanthin chlorophyll a/c protein 10 / Photosystem I P700 chlorophyll a apoprotein A1 / Fucoxanthin chlorophyll a/c protein 6 / Photosystem I reaction center protein 28 / Fucoxanthin chlorophyll a/c protein 16 / Fucoxanthin chlorophyll a/c protein 9 / Fucoxanthin chlorophyll a/c protein 3 / Fucoxanthin chlorophyll a/c protein 13 / Fucoxanthin chlorophyll a/c protein 7 / Fucoxanthin chlorophyll a/c protein 4 / Fucoxanthin chlorophyll a/c protein 14 / Fucoxanthin chlorophyll a/c protein 5 / Fucoxanthin chlorophyll a/c protein 15 / Photosystem I reaction center subunit IX / Photosystem I reaction center subunit II, chloroplastic / Protein fucoxanthin chlorophyl a/c protein / Fucoxanthin chlorophyll a/c light-harvesting protein, lhcr type / Photosystem I reaction center subunit IV / Photosystem I iron-sulfur center / Photosystem I reaction center subunit III, chloroplastic / Photosystem I reaction center subunit VIII / Photosystem I reaction center subunit XII 類似検索 - 構成要素
ジャーナル: Nat Commun / 年: 2020 タイトル: Structural basis for energy transfer in a huge diatom PSI-FCPI supercomplex. 著者: Caizhe Xu / Xiong Pi / Yawen Huang / Guangye Han / Xiaobo Chen / Xiaochun Qin / Guoqiang Huang / Songhao Zhao / Yanyan Yang / Tingyun Kuang / Wenda Wang / Sen-Fang Sui / Jian-Ren Shen / 要旨: 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 ...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 Å 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 β-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.