+検索条件
-Structure paper
| タイトル | Structures of RC-LH1 complexes with open or closed quinone channels. |
|---|---|
| ジャーナル・号・ページ | Sci Adv, Vol. 7, Issue 3, Year 2021 |
| 掲載日 | 2021年1月13日 |
著者 | David J K Swainsbury / Pu Qian / Philip J Jackson / Kaitlyn M Faries / Dariusz M Niedzwiedzki / Elizabeth C Martin / David A Farmer / Lorna A Malone / Rebecca F Thompson / Neil A Ranson / Daniel P Canniffe / Mark J Dickman / Dewey Holten / Christine Kirmaier / Andrew Hitchcock / C Neil Hunter / ![]() |
| PubMed 要旨 | The reaction-center light-harvesting complex 1 (RC-LH1) is the core photosynthetic component in purple phototrophic bacteria. We present two cryo-electron microscopy structures of RC-LH1 complexes ...The reaction-center light-harvesting complex 1 (RC-LH1) is the core photosynthetic component in purple phototrophic bacteria. We present two cryo-electron microscopy structures of RC-LH1 complexes from A 2.65-Å resolution structure of the RC-LH1-W complex consists of an open 14-subunit LH1 ring surrounding the RC interrupted by protein-W, whereas the complex without protein-W at 2.80-Å resolution comprises an RC completely encircled by a closed, 16-subunit LH1 ring. Comparison of these structures provides insights into quinone dynamics within RC-LH1 complexes, including a previously unidentified conformational change upon quinone binding at the RC Q site, and the locations of accessory quinone binding sites that aid their delivery to the RC. The structurally unique protein-W prevents LH1 ring closure, creating a channel for accelerated quinone/quinol exchange. |
リンク | Sci Adv / PubMed:33523887 / PubMed Central |
| 手法 | EM (単粒子) |
| 解像度 | 2.65 - 2.8 Å |
| 構造データ | EMDB-11080, PDB-6z5r: EMDB-11081, PDB-6z5s: |
| 化合物 | ![]() ChemComp-BCL: ![]() ChemComp-CRT: ![]() ChemComp-6PL: ![]() ChemComp-CDL: ![]() ChemComp-LMT: ![]() ChemComp-BPH: ![]() ChemComp-U10: ![]() ChemComp-FE: ![]() ChemComp-QAK: ![]() ChemComp-PGT: ![]() ChemComp-HOH: |
| 由来 |
|
キーワード | PHOTOSYNTHESIS / Reaction center / Light harvesting / Protein W / Quinone |
ムービー
コントローラー
構造ビューア
万見文献について



著者

リンク














rhodopseudomonas palustris (strain atcc baa-98 / cga009) (光合成細菌)
キーワード