- EMDB-20397: Structure of Photosystem I Acclimated to Far-red Light -
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基本情報
登録情報
データベース: EMDB / ID: EMD-20397
タイトル
Structure of Photosystem I Acclimated to Far-red Light
マップデータ
Map of trimeric photosystem I acclimated to far-red light
試料
複合体: Photosystem I from far-red light-adapted Fischerella thermalis PCC 7521
タンパク質・ペプチド: x 12種
リガンド: x 10種
機能・相同性
機能・相同性情報
thylakoid membrane / : / photosystem I reaction center / photosystem I / photosystem I / plasma membrane-derived thylakoid membrane / chlorophyll binding / photosynthetic electron transport in photosystem I / photosynthesis / 4 iron, 4 sulfur cluster binding ...thylakoid membrane / : / photosystem I reaction center / photosystem I / photosystem I / plasma membrane-derived thylakoid membrane / chlorophyll binding / photosynthetic electron transport in photosystem I / photosynthesis / 4 iron, 4 sulfur cluster binding / membrane => GO:0016020 / electron transfer activity / magnesium ion binding / membrane / metal ion binding 類似検索 - 分子機能
Photosystem I PsaX / Photosystem I PsaX superfamily / PsaX family / Photosystem I reaction center subunit PsaK / Photosystem I reaction centre subunit PsaK / Photosystem I PsaM, reaction centre superfamily / Photosystem I PsaM, reaction centre / Photosystem I protein M (PsaM) / Photosystem I reaction centre subunit PsaK superfamily / Photosystem I reaction center subunit V/PsaK ...Photosystem I PsaX / Photosystem I PsaX superfamily / PsaX family / Photosystem I reaction center subunit PsaK / Photosystem I reaction centre subunit PsaK / Photosystem I PsaM, reaction centre superfamily / Photosystem I PsaM, reaction centre / Photosystem I protein M (PsaM) / Photosystem I reaction centre subunit PsaK superfamily / Photosystem I reaction center subunit V/PsaK / Photosystem I psaG / psaK / 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 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 PsaJ, reaction centre subunit IX / Photosystem I PsaJ, reaction centre subunit IX superfamily / Photosystem I reaction centre subunit IX / PsaJ / Photosystem I PsaE, reaction centre subunit IV / Photosystem I reaction centre subunit IV / PsaE / Photosystem I protein PsaC / Photosystem I PsaA / Photosystem I PsaB / 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 dicluster domain / 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
Photosystem I P700 chlorophyll a apoprotein A2 / Photosystem I reaction center protein subunit XI / Uncharacterized protein / Uncharacterized protein / Photosystem I reaction centre subunit IX / PsaJ / Photosystem I reaction center subunit III / Photosystem I P700 chlorophyll a apoprotein A1 / Photosystem I P700 chlorophyll a apoprotein A2 / PSI subunit V / Photosystem I reaction center subunit IV ...Photosystem I P700 chlorophyll a apoprotein A2 / Photosystem I reaction center protein subunit XI / Uncharacterized protein / Uncharacterized protein / Photosystem I reaction centre subunit IX / PsaJ / Photosystem I reaction center subunit III / Photosystem I P700 chlorophyll a apoprotein A1 / Photosystem I P700 chlorophyll a apoprotein A2 / PSI subunit V / Photosystem I reaction center subunit IV / Photosystem one PsaX / Photosystem I reaction center subunit PsaK / Photosystem I iron-sulfur center / Photosystem I reaction center subunit II / Photosystem I reaction center subunit XII 類似検索 - 構成要素
National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)
P41-GM103311
米国
引用
ジャーナル: Sci Adv / 年: 2020 タイトル: The structure of Photosystem I acclimated to far-red light illuminates an ecologically important acclimation process in photosynthesis. 著者: Christopher Gisriel / Gaozhong Shen / Vasily Kurashov / Ming-Yang Ho / Shangji Zhang / Dewight Williams / John H Golbeck / Petra Fromme / Donald A Bryant / 要旨: Phototrophic organisms are superbly adapted to different light environments but often must acclimate to challenging competition for visible light wavelengths in their niches. Some cyanobacteria ...Phototrophic organisms are superbly adapted to different light environments but often must acclimate to challenging competition for visible light wavelengths in their niches. Some cyanobacteria overcome this challenge by expressing paralogous photosynthetic proteins and by synthesizing and incorporating ~8% chlorophyll f into their Photosystem I (PSI) complexes, enabling them to grow under far-red light (FRL). We solved the structure of FRL-acclimated PSI from the cyanobacterium PCC 7521 by single-particle, cryo-electron microscopy to understand its structural and functional differences. Four binding sites occupied by chlorophyll f are proposed. Subtle structural changes enable FRL-adapted PSI to extend light utilization for oxygenic photosynthesis to nearly 800 nm. This structure provides a platform for understanding FRL-driven photosynthesis and illustrates the robustness of adaptive and acclimation mechanisms in nature.