- EMDB-13898: The structure of Photosystem I tetramer from Chroococcidiopsis TS... -
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基本情報
登録情報
データベース: EMDB / ID: EMD-13898
タイトル
The structure of Photosystem I tetramer from Chroococcidiopsis TS-821, a thermophilic, unicellular, non-heterocyst-forming cyanobacterium
マップデータ
試料
複合体: Photosystem I
タンパク質・ペプチド: x 11種
リガンド: x 5種
機能・相同性
機能・相同性情報
thylakoid membrane / : / photosystem I reaction center / photosystem I / photosystem I / chlorophyll binding / photosynthetic electron transport in photosystem I / photosynthesis / 4 iron, 4 sulfur cluster binding / membrane => GO:0016020 ...thylakoid membrane / : / photosystem I reaction center / photosystem I / photosystem I / chlorophyll binding / photosynthetic electron transport in photosystem I / photosynthesis / 4 iron, 4 sulfur cluster binding / membrane => GO:0016020 / electron transfer 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 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 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 / 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 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 reaction center subunit PsaK / Photosystem I reaction center subunit XII / Photosystem I iron-sulfur center / Photosystem I reaction center subunit VIII / PSI-F / Photosystem I P700 chlorophyll a apoprotein A1 / Photosystem I P700 chlorophyll a apoprotein A2 / Photosystem I reaction center subunit IV / Photosystem I reaction center subunit II / Photosystem I reaction center subunit IX / Photosystem I reaction center subunit XI 類似検索 - 構成要素
ジャーナル: Plant Commun / 年: 2022 タイトル: Cryo-EM structure of a tetrameric photosystem I from TS-821, a thermophilic, unicellular, non-heterocyst-forming cyanobacterium. 著者: Dmitry A Semchonok / Jyotirmoy Mondal / Connor J Cooper / Katrina Schlum / Meng Li / Muhamed Amin / Carlos O S Sorzano / Erney Ramírez-Aportela / Panagiotis L Kastritis / Egbert J Boekema / ...著者: Dmitry A Semchonok / Jyotirmoy Mondal / Connor J Cooper / Katrina Schlum / Meng Li / Muhamed Amin / Carlos O S Sorzano / Erney Ramírez-Aportela / Panagiotis L Kastritis / Egbert J Boekema / Albert Guskov / Barry D Bruce / 要旨: Photosystem I (PSI) is one of two photosystems involved in oxygenic photosynthesis. PSI of cyanobacteria exists in monomeric, trimeric, and tetrameric forms, in contrast to the strictly monomeric ...Photosystem I (PSI) is one of two photosystems involved in oxygenic photosynthesis. PSI of cyanobacteria exists in monomeric, trimeric, and tetrameric forms, in contrast to the strictly monomeric form of PSI in plants and algae. The tetrameric organization raises questions about its structural, physiological, and evolutionary significance. Here we report the ∼3.72 Å resolution cryo-electron microscopy structure of tetrameric PSI from the thermophilic, unicellular cyanobacterium sp. TS-821. The structure resolves 44 subunits and 448 cofactor molecules. We conclude that the tetramer is arranged via two different interfaces resulting from a dimer-of-dimers organization. The localization of chlorophyll molecules permits an excitation energy pathway within and between adjacent monomers. Bioinformatics analysis reveals conserved regions in the PsaL subunit that correlate with the oligomeric state. Tetrameric PSI may function as a key evolutionary step between the trimeric and monomeric forms of PSI organization in photosynthetic organisms.
名称: Photosystem I reaction center subunit VIII / タイプ: protein_or_peptide / ID: 7 / コピー数: 4 / 光学異性体: LEVO
由来(天然)
生物種: Chroococcidiopsis sp. TS-821 (バクテリア)
分子量
理論値: 4.194028 KDa
配列
文字列:
MFSASFLPSI LVPLTGLVFP AIAMALLLIY VEREDPSGI
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分子 #8: Photosystem I reaction center subunit IX
分子
名称: Photosystem I reaction center subunit IX / タイプ: protein_or_peptide / ID: 8 / 詳細: BCR is not the part of the protein sequence / コピー数: 4 / 光学異性体: LEVO
名称: Photosystem I reaction center subunit PsaK / タイプ: protein_or_peptide / ID: 9 / 詳細: CLA is not the part of the protein sequence / コピー数: 4 / 光学異性体: LEVO