- EMDB-0727: Structure of PSI from H. hongdechloris grown under far-red light ... -
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基本情報
登録情報
データベース: EMDB / ID: EMD-0727
タイトル
Structure of PSI from H. hongdechloris grown under far-red light condition
マップデータ
試料
複合体: far-red PSI
タンパク質・ペプチド: x 9種
リガンド: x 12種
キーワード
Photosystem I / ELECTRON TRANSPORT
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 / oxidoreductase activity / magnesium ion binding / metal ion binding 類似検索 - 分子機能
Photosystem I reaction center subunit PsaK / Photosystem I reaction centre subunit PsaK / Photosystem I reaction centre subunit PsaK superfamily / : / Photosystem I psaG and psaK proteins signature. / 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 center subunit PsaK / Photosystem I reaction centre subunit PsaK / Photosystem I reaction centre subunit PsaK superfamily / : / Photosystem I psaG and psaK proteins signature. / 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 PsaD / Photosystem I, reaction centre subunit PsaD superfamily / PsaD / 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 reaction center subunit II / Photosystem I reaction center subunit IV / Photosystem I P700 chlorophyll a apoprotein A2 / Photosystem I reaction center subunit VIII / Photosystem I P700 chlorophyll a apoprotein A1 / PSI subunit V / Photosystem I iron-sulfur center / Photosystem I reaction center subunit PsaK 類似検索 - 構成要素
ジャーナル: Nat Commun / 年: 2020 タイトル: Structural basis for the adaptation and function of chlorophyll f in photosystem I. 著者: Koji Kato / Toshiyuki Shinoda / Ryo Nagao / Seiji Akimoto / Takehiro Suzuki / Naoshi Dohmae / Min Chen / Suleyman I Allakhverdiev / Jian-Ren Shen / Fusamichi Akita / Naoyuki Miyazaki / Tatsuya Tomo / 要旨: Chlorophylls (Chl) play pivotal roles in energy capture, transfer and charge separation in photosynthesis. Among Chls functioning in oxygenic photosynthesis, Chl f is the most red-shifted type first ...Chlorophylls (Chl) play pivotal roles in energy capture, transfer and charge separation in photosynthesis. Among Chls functioning in oxygenic photosynthesis, Chl f is the most red-shifted type first found in a cyanobacterium Halomicronema hongdechloris. The location and function of Chl f in photosystems are not clear. Here we analyzed the high-resolution structures of photosystem I (PSI) core from H. hongdechloris grown under white or far-red light by cryo-electron microscopy. The structure showed that, far-red PSI binds 83 Chl a and 7 Chl f, and Chl f are associated at the periphery of PSI but not in the electron transfer chain. The appearance of Chl f is well correlated with the expression of PSI genes induced under far-red light. These results indicate that Chl f functions to harvest the far-red light and enhance uphill energy transfer, and changes in the gene sequences are essential for the binding of Chl f.