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Updated: Jul 31, 2026
10:39
Visualization of ATP Synthase Dimers in Mitochondria by Electron Cryo-tomography
Published on: September 14, 2014
Electrical power fuels rotary ATP synthase
Peter Dimroth1, Christoph von Ballmoos, Thomas Meier
1Institut für Mikrobiologie der Eidgenössischen Technischen Hochschule, ETH Zentrum, CH-8092 Zürich, Switzerland. dimroth@micro.biol.ethz.ch
Structure (London, England : 1993)
|December 6, 2003
Summary
F-type ATP synthases use ion gradients to make ATP. This study reveals how the F(0) domain generates torque, driven by membrane potential, for efficient energy conversion.
Area of Science:
- Biochemistry
- Molecular Biology
- Bioenergetics
Background:
- F-ATPases are essential molecular machines synthesizing ATP.
- They utilize transmembrane ion gradients (protons or sodium ions).
- The electric potential across the membrane is a key energy source.
Purpose of the Study:
- To elucidate the mechanism of torque generation in F-ATPases.
- To integrate recent structural and functional data of the F(0) domain.
- To highlight the role of membrane potential in driving ATP synthesis.
Main Methods:
- Structural analysis of the F(0) domain.
- Functional studies of ion transport and rotation.
- Integration of existing biochemical and biophysical data.
Main Results:
- A detailed mechanism for torque generation within the F(0) domain is proposed.
- The fundamental role of membrane potential as the driving force is emphasized.
- Recent structural insights inform the proposed mechanism.
Conclusions:
- The F(0) domain's mechanism is central to F-ATPase function.
- Membrane potential directly drives the mechanical rotation for ATP synthesis.
- This work provides a unified view of F-ATPase bioenergetics.
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