- PDB-6j3z: Structure of C2S1M1-type PSII-FCPII supercomplex from diatom -
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基本情報
登録情報
データベース: PDB / ID: 6j3z
タイトル
Structure of C2S1M1-type PSII-FCPII supercomplex from diatom
要素
(Cytochrome b559 subunit ...) x 2
(Extrinsic protein in photosystem ...) x 3
(Fucoxanthin chlorophyll a/c-binding protein monomer ...) x 3
(Photosystem II chlorophyll protein ...) x 2
(Photosystem II reaction center protein ...) x 12
(Unknown protein ...) x 3
Cytochrome c-550
Fucoxanthin chlorophyll a/c-binding protein Lhcf1, FCP1
Photosystem II reaction center X protein
キーワード
ELECTRON TRANSPORT / Photosystem
機能・相同性
機能・相同性情報
photosystem II assembly / photosystem II stabilization / thylakoid / photosystem II / extrinsic component of membrane / photosynthesis, light reaction / chloroplast thylakoid membrane / phosphate ion binding / photosynthesis / respiratory electron transport chain ...photosystem II assembly / photosystem II stabilization / thylakoid / photosystem II / extrinsic component of membrane / photosynthesis, light reaction / chloroplast thylakoid membrane / phosphate ion binding / photosynthesis / respiratory electron transport chain / electron transfer activity / protein stabilization / iron ion binding / heme binding 類似検索 - 分子機能
PsbQ-like domain superfamily / Photosystem II PsbU, oxygen evolving complex / Photosystem II 12 kDa extrinsic protein (PsbU) / Photosystem II PsbV, cytochrome c-550 precursor / Photosystem II cytochrome c-550 precursor / Cytochrome c-550 domain / Cytochrome c-550 domain / Photosystem II PsbO, manganese-stabilising / Manganese-stabilising protein / photosystem II polypeptide / Photosystem II PsbX, type 1 subfamily ...PsbQ-like domain superfamily / Photosystem II PsbU, oxygen evolving complex / Photosystem II 12 kDa extrinsic protein (PsbU) / Photosystem II PsbV, cytochrome c-550 precursor / Photosystem II cytochrome c-550 precursor / Cytochrome c-550 domain / Cytochrome c-550 domain / Photosystem II PsbO, manganese-stabilising / Manganese-stabilising protein / photosystem II polypeptide / Photosystem II PsbX, type 1 subfamily / Photosystem II PsbX / Photosystem II reaction centre X protein (PsbX) / Photosystem II reaction centre protein H / Photosystem II reaction centre protein H superfamily / Photosystem II 10 kDa phosphoprotein / Outer membrane protein/outer membrane enzyme PagP, beta-barrel / Cytochrome c family profile. / Cytochrome c-like domain / Cytochrome c-like domain superfamily 類似検索 - ドメイン・相同性
Chem-A86 / BETA-CAROTENE / BICARBONATE ION / CHLOROPHYLL A / DIGALACTOSYL DIACYL GLYCEROL (DGDG) / : / PROTOPORPHYRIN IX CONTAINING FE / 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE / 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE / CA-MN4-O5 CLUSTER ...Chem-A86 / BETA-CAROTENE / BICARBONATE ION / CHLOROPHYLL A / DIGALACTOSYL DIACYL GLYCEROL (DGDG) / : / PROTOPORPHYRIN IX CONTAINING FE / 1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE / 1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE / CA-MN4-O5 CLUSTER / PHEOPHYTIN A / Chem-PL9 / Chem-SQD / Extrinsic protein in photosystem II / Extrinsic protein in photosystem II / Photosystem II 12 kDa extrinsic protein / Photosystem II reaction center protein X / Photosystem II extrinsic protein V / Photosystem II reaction center protein H 類似検索 - 構成要素
ジャーナル: Nat Plants / 年: 2019 タイトル: Structural basis for energy harvesting and dissipation in a diatom PSII-FCPII supercomplex. 著者: Ryo Nagao / Koji Kato / Takehiro Suzuki / Kentaro Ifuku / Ikuo Uchiyama / Yasuhiro Kashino / Naoshi Dohmae / Seiji Akimoto / Jian-Ren Shen / Naoyuki Miyazaki / Fusamichi Akita / 要旨: Light-harvesting antenna systems in photosynthetic organisms harvest solar energy and transfer it to the photosynthetic reaction centres to initiate charge-separation and electron-transfer reactions. ...Light-harvesting antenna systems in photosynthetic organisms harvest solar energy and transfer it to the photosynthetic reaction centres to initiate charge-separation and electron-transfer reactions. Diatoms are one of the important groups of oxyphototrophs and possess fucoxanthin chlorophyll a/c-binding proteins (FCPs) as light harvesters. The organization and association pattern of FCP with the photosystem II (PSII) core are unknown. Here we solved the structure of PSII-FCPII supercomplexes isolated from a diatom, Chaetoceros gracilis, by single-particle cryoelectron microscopy. The PSII-FCPII forms a homodimer. In each monomer, two FCP homotetramers and three FCP monomers are associated with one PSII core. The structure reveals a highly complicated protein-pigment network that is different from the green-type light-harvesting apparatus. Comparing these two systems allows the identification of energy transfer and quenching pathways. These findings provide structural insights into not only excitation-energy transfer mechanisms in the diatom PSII-FCPII, but also changes of light harvesters between the red- and green-lineage oxyphototrophs during evolution.
A: Photosystem II reaction center protein D1 B: Photosystem II chlorophyll protein CP47 C: Photosystem II chlorophyll protein CP43 D: Photosystem II reaction center protein D2 E: Cytochrome b559 subunit alpha F: Cytochrome b559 subunit beta H: Photosystem II reaction center protein H I: Photosystem II reaction center protein I J: Photosystem II reaction center protein J K: Photosystem II reaction center protein K L: Photosystem II reaction center protein L M: Photosystem II reaction center protein M O: Extrinsic protein in photosystem II T: Photosystem II reaction center protein T U: Extrinsic protein in photosystem II V: Cytochrome c-550 Y: Photosystem II reaction center protein Ycf12 X: Photosystem II reaction center X protein Z: Photosystem II reaction center protein Z Q: Extrinsic protein in photosystem II W: Photosystem II reaction center protein W 0: Unknown protein 0 1: Unknown protein 1 2: Unknown protein 2 a: Photosystem II reaction center protein D1 b: Photosystem II chlorophyll protein CP47 c: Photosystem II chlorophyll protein CP43 d: Photosystem II reaction center protein D2 e: Cytochrome b559 subunit alpha f: Cytochrome b559 subunit beta h: Photosystem II reaction center protein H i: Photosystem II reaction center protein I j: Photosystem II reaction center protein J k: Photosystem II reaction center protein K l: Photosystem II reaction center protein L m: Photosystem II reaction center protein M o: Extrinsic protein in photosystem II t: Photosystem II reaction center protein T u: Extrinsic protein in photosystem II v: Cytochrome c-550 y: Photosystem II reaction center protein Ycf12 x: Photosystem II reaction center X protein z: Photosystem II reaction center protein Z q: Extrinsic protein in photosystem II w: Photosystem II reaction center protein W 5: Unknown protein 0 6: Unknown protein 1 7: Unknown protein 2 11: Fucoxanthin chlorophyll a/c-binding protein Lhcf1, FCP1 12: Fucoxanthin chlorophyll a/c-binding protein Lhcf1, FCP1 13: Fucoxanthin chlorophyll a/c-binding protein Lhcf1, FCP1 14: Fucoxanthin chlorophyll a/c-binding protein Lhcf1, FCP1 15: Fucoxanthin chlorophyll a/c-binding protein Lhcf1, FCP1 16: Fucoxanthin chlorophyll a/c-binding protein Lhcf1, FCP1 17: Fucoxanthin chlorophyll a/c-binding protein Lhcf1, FCP1 18: Fucoxanthin chlorophyll a/c-binding protein Lhcf1, FCP1 19: Fucoxanthin chlorophyll a/c-binding protein monomer 1 20: Fucoxanthin chlorophyll a/c-binding protein monomer 2 21: Fucoxanthin chlorophyll a/c-binding protein monomer 3 ヘテロ分子
Unknown protein 0/1/2 are supposed to be new components of photosystem II. Fucoxanthin chlorophyll ...Unknown protein 0/1/2 are supposed to be new components of photosystem II. Fucoxanthin chlorophyll a/c-binding protein monomer 1/2/3 are obviously Fucoxanthin chlorophyll a/c-binding protein which are different from Fucoxanthin chlorophyll a/c-binding protein Lhcf1, FCP1. Sequence of above entities could not be assigned.