- PDB-6rhz: Structure of a minimal photosystem I from a green alga -
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基本情報
登録情報
データベース: PDB / ID: 6rhz
タイトル
Structure of a minimal photosystem I from a green alga
要素
(Chlorophyll a-b binding protein, ...) x 4
(Photosystem I P700 chlorophyll a apoprotein ...) x 2
(Photosystem I reaction center subunit ...) x 4
Photosystem I iron-sulfur center
キーワード
PHOTOSYNTHESIS / photosystem I / green algae
機能・相同性
機能・相同性情報
photosynthesis, light harvesting / photosystem I / photosynthetic electron transport in photosystem I / photosystem I / photosystem II / chlorophyll binding / chloroplast thylakoid membrane / photosynthesis / 4 iron, 4 sulfur cluster binding / electron transfer activity ...photosynthesis, light harvesting / photosystem I / photosynthetic electron transport in photosystem I / photosystem I / photosystem II / chlorophyll binding / chloroplast thylakoid membrane / photosynthesis / 4 iron, 4 sulfur cluster binding / electron transfer activity / oxidoreductase activity / magnesium ion binding / metal ion binding 類似検索 - 分子機能
Photosystem I, reaction centre, subunit PsaF / Photosystem I p700 chlorophyll A apoprotein A1 / Photosystem I PsaA/PsaB / Photosystem 1 Reaction Centre Subunit Ii; Chain: D; / Photosystem I PsaD, reaction center subunit II / Chlorophyll a-b binding protein / Chlorophyll a/b binding protein domain / Single helix bin / SH3 type barrels. - #50 / Alpha-Beta Plaits - #20 ...Photosystem I, reaction centre, subunit PsaF / Photosystem I p700 chlorophyll A apoprotein A1 / Photosystem I PsaA/PsaB / Photosystem 1 Reaction Centre Subunit Ii; Chain: D; / Photosystem I PsaD, reaction center subunit II / Chlorophyll a-b binding protein / Chlorophyll a/b binding protein domain / Single helix bin / SH3 type barrels. - #50 / Alpha-Beta Plaits - #20 / Photosystem I PsaJ, reaction centre subunit IX superfamily / Photosystem I PsaJ, reaction centre subunit IX / Photosystem I reaction centre subunit IX / PsaJ / Chlorophyll A-B binding protein, plant and chromista / Chlorophyll A-B binding protein / Chlorophyll A-B binding protein / 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 / 4Fe-4S dicluster domain / Helicase, Ruva Protein; domain 3 / 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 / Single alpha-helices involved in coiled-coils or other helix-helix interfaces / SH3 type barrels. / Roll / Alpha-Beta Plaits / Up-down Bundle / 2-Layer Sandwich / Orthogonal Bundle / Mainly Beta / Mainly Alpha / Alpha Beta 類似検索 - ドメイン・相同性
BETA-CAROTENE / CHLOROPHYLL B / CHLOROPHYLL A ISOMER / CHLOROPHYLL A / DIGALACTOSYL DIACYL GLYCEROL (DGDG) / 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE / 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE / Chem-LUT / PHYLLOQUINONE / IRON/SULFUR CLUSTER ...BETA-CAROTENE / CHLOROPHYLL B / CHLOROPHYLL A ISOMER / CHLOROPHYLL A / DIGALACTOSYL DIACYL GLYCEROL (DGDG) / 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE / 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE / Chem-LUT / PHYLLOQUINONE / IRON/SULFUR CLUSTER / Chem-XAT / Chlorophyll a-b binding protein, chloroplastic / Chlorophyll a-b binding protein, chloroplastic / Photosystem I P700 chlorophyll a apoprotein A1 / Photosystem I reaction center subunit IX / Photosystem I iron-sulfur center / Photosystem I P700 chlorophyll a apoprotein A2 類似検索 - 構成要素
ジャーナル: Nat Plants / 年: 2020 タイトル: Structure of a minimal photosystem I from the green alga Dunaliella salina. 著者: Annemarie Perez-Boerema / Daniel Klaiman / Ido Caspy / Sigal Y Netzer-El / Alexey Amunts / Nathan Nelson / 要旨: Solar energy harnessed by oxygenic photosynthesis supports most of the life forms on Earth. In eukaryotes, photosynthesis occurs in chloroplasts and is achieved by membrane-embedded macromolecular ...Solar energy harnessed by oxygenic photosynthesis supports most of the life forms on Earth. In eukaryotes, photosynthesis occurs in chloroplasts and is achieved by membrane-embedded macromolecular complexes that contain core and peripheral antennae with multiple pigments. The structure of photosystem I (PSI) comprises the core and light-harvesting (LHCI) complexes, which together form PSI-LHCI. Here we determined the structure of PSI-LHCI from the salt-tolerant green alga Dunaliella salina using X-ray crystallography and electron cryo-microscopy. Our results reveal a previously undescribed configuration of the PSI core. It is composed of only 7 subunits, compared with 14-16 subunits in plants and the alga Chlamydomonas reinhardtii, and forms the smallest known PSI. The LHCI is poorly conserved at the sequence level and binds to pigments that form new energy pathways, and the interactions between the individual Lhca1-4 proteins are weakened. Overall, the data indicate the PSI of D. salina represents a different type of the molecular organization that provides important information for reconstructing the plasticity and evolution of PSI.
履歴
登録
2019年4月23日
登録サイト: PDBE / 処理サイト: PDBE
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2020年2月19日
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#241 - 2020年1月 20年の分子を振り返って (Twenty Years of Molecules) 類似性 (4)
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集合体
登録構造単位
1: Chlorophyll a-b binding protein, chloroplastic 2: Chlorophyll a-b binding protein, Lhca2 3: Chlorophyll a-b binding protein, chloroplastic 4: Chlorophyll a-b binding protein, Lhca4 A: Photosystem I P700 chlorophyll a apoprotein A1 B: Photosystem I P700 chlorophyll a apoprotein A2 C: Photosystem I iron-sulfur center D: Photosystem I reaction center subunit II, PsaD E: Photosystem I reaction center subunit IV, PsaE F: Photosystem I reaction center subunit III, PsaF J: Photosystem I reaction center subunit IX ヘテロ分子