7O0U

Cryo-EM structure (model_1a) of the RC-dLH complex from Gemmatimonas phototrophica at 2.4 A

これはPDB形式変換不可エントリーです。

7O0U の概要

• エントリーDOI: 10.2210/pdb7o0u/pdb
• EMDBエントリー: 12679
• 分子名称: LHh-alpha, alpha-L-rhamnopyranose-(1-4)-alpha-D-mannopyranose, BACTERIOCHLOROPHYLL A, ... (26 entities in total)
• 機能のキーワード: photosynthesis, reaction centre light harvesting complex, rc-dlh, rc-lh1, carotenoid, quinone, bacteriochlorophyll a, gemmatimonas phototrophica, membrane protein
• 由来する生物種: Gemmatimonas phototrophica; 詳細
• タンパク質・核酸の鎖数: 86
• 化学式量合計: 850424.42

構造登録者

Qian, P.,Koblizek, M. (登録日: 2021-03-27, 公開日: 2022-03-02, 最終更新日: 2024-10-23)

主引用文献

Qian, P.,Gardiner, A.T.,Simova, I.,Naydenova, K.,Croll, T.I.,Jackson, P.J.,Kloz, M.,Cubakova, P.,Kuzma, M.,Zeng, Y.,Castro-Hartmann, P.,van Knippenberg, B.,Goldie, K.N.,Kaftan, D.,Hrouzek, P.,Hajek, J.,Agirre, J.,Siebert, C.A.,Bina, D.,Sader, K.,Stahlberg, H.,Sobotka, R.,Russo, C.J.,Polivka, T.,Hunter, C.N.,Koblizek, M.
2.4- angstrom structure of the double-ring Gemmatimonas phototrophica photosystem.
Sci Adv, 8:eabk3139-eabk3139, 2022

PubMed Abstract: Phototrophic Gemmatimonadetes evolved the ability to use solar energy following horizontal transfer of photosynthesis-related genes from an ancient phototrophic proteobacterium. The electron cryo-microscopy structure of the photosystem at 2.4 Å reveals a unique, double-ring complex. Two unique membrane-extrinsic polypeptides, RC-S and RC-U, hold the central type 2 reaction center (RC) within an inner 16-subunit light-harvesting 1 (LH1) ring, which is encircled by an outer 24-subunit antenna ring (LHh) that adds light-gathering capacity. Femtosecond kinetics reveal the flow of energy within the RC-dLH complex, from the outer LHh ring to LH1 and then to the RC. This structural and functional study shows that has independently evolved its own compact, robust, and highly effective architecture for harvesting and trapping solar energy.

PubMed: 35171663
DOI: 10.1126/sciadv.abk3139

実験手法

ELECTRON MICROSCOPY (2.35 Å)