6REA

Cryo-EM structure of Polytomella F-ATP synthase, Rotary substate 2D, focussed refinement of F1 head and rotor

6REA の概要

• エントリーDOI: 10.2210/pdb6rea/pdb
• EMDBエントリー: 4847
• 分子名称: Mitochondrial ATP synthase subunit c, ADENOSINE-5'-DIPHOSPHATE, Mitochondrial ATP synthase subunit OSCP, ... (10 entities in total)
• 機能のキーワード: mitochondrial atp synthase dimer flexible coupling cryoem, proton transport
• 由来する生物種: Polytomella sp. Pringsheim 198.80; 詳細
• タンパク質・核酸の鎖数: 20
• 化学式量合計: 586509.66

構造登録者

Murphy, B.J.,Klusch, N.,Yildiz, O.,Kuhlbrandt, W. (登録日: 2019-04-12, 公開日: 2019-07-03, 最終更新日: 2024-05-22)

主引用文献

Murphy, B.J.,Klusch, N.,Langer, J.,Mills, D.J.,Yildiz, O.,Kuhlbrandt, W.
Rotary substates of mitochondrial ATP synthase reveal the basis of flexible F 1 -F o coupling.
Science, 364:-, 2019

PubMed Abstract: FF-adenosine triphosphate (ATP) synthases make the energy of the proton-motive force available for energy-consuming processes in the cell. We determined the single-particle cryo-electron microscopy structure of active dimeric ATP synthase from mitochondria of sp. at a resolution of 2.7 to 2.8 angstroms. Separation of 13 well-defined rotary substates by three-dimensional classification provides a detailed picture of the molecular motions that accompany -ring rotation and result in ATP synthesis. Crucially, the F head rotates along with the central stalk and -ring rotor for the first ~30° of each 120° primary rotary step to facilitate flexible coupling of the stoichiometrically mismatched F and F subcomplexes. Flexibility is mediated primarily by the interdomain hinge of the conserved OSCP subunit. A conserved metal ion in the proton access channel may synchronize -ring protonation with rotation.

PubMed: 31221832
DOI: 10.1126/science.aaw9128

実験手法

ELECTRON MICROSCOPY (3.6 Å)