7L1Q

PS3 F1-ATPase Binding/TS Dwell

7L1Q の概要

• エントリーDOI: 10.2210/pdb7l1q/pdb
• EMDBエントリー: 23115 23116 23117
• 分子名称: ATP synthase subunit alpha, ATP synthase subunit beta, ATP synthase gamma chain, ... (7 entities in total)
• 機能のキーワード: atpase, atp synthase, translocase
• 由来する生物種: Bacillus sp. (strain PS3); 詳細
• タンパク質・核酸の鎖数: 7
• 化学式量合計: 362946.31

構造登録者

Sobti, M.,Ueno, H.,Noji, H.,Stewart, A.G. (登録日: 2020-12-15, 公開日: 2021-07-21, 最終更新日: 2024-05-29)

主引用文献

Sobti, M.,Ueno, H.,Noji, H.,Stewart, A.G.
The six steps of the complete F 1 -ATPase rotary catalytic cycle.
Nat Commun, 12:4690-4690, 2021

PubMed Abstract: FF ATP synthase interchanges phosphate transfer energy and proton motive force via a rotary catalysis mechanism. Isolated F-ATPase catalytic cores can hydrolyze ATP, passing through six intermediate conformational states to generate rotation of their central γ-subunit. Although previous structural studies have contributed greatly to understanding rotary catalysis in the F-ATPase, the structure of an important conformational state (the binding-dwell) has remained elusive. Here, we exploit temperature and time-resolved cryo-electron microscopy to determine the structure of the binding- and catalytic-dwell states of Bacillus PS3 F-ATPase. Each state shows three catalytic β-subunits in different conformations, establishing the complete set of six states taken up during the catalytic cycle and providing molecular details for both the ATP binding and hydrolysis strokes. We also identify a potential phosphate-release tunnel that indicates how ADP and phosphate binding are coordinated during synthesis. Overall these findings provide a structural basis for the entire F-ATPase catalytic cycle.

PubMed: 34344897
DOI: 10.1038/s41467-021-25029-0

実験手法

ELECTRON MICROSCOPY (3.4 Å)