Related Experiment Video
Updated: Jun 22, 2026
08:44
Isolation of F1-ATPase from the Parasitic Protist Trypanosoma brucei
Published on: January 22, 2019
Essentials for ATP synthesis by F1F0 ATP synthases
Christoph von Ballmoos1, Alexander Wiedenmann, Peter Dimroth
1Department of Biochemistry and Biophysics, Arrhenius Laboratories for Natural Sciences, Stockholm University, Stockholm, Sweden. christoph@dbb.su.se
Annual Review of Biochemistry
|June 4, 2009
Summary
F(1)F(0) ATP synthase generates cellular energy (ATP) using proton gradients to drive motor rotation. Efficient ATP synthesis relies on proton availability and the precise interplay within the enzyme's torque-generating components.
Area of Science:
- Biochemistry
- Molecular Biology
- Bioenergetics
Background:
- Cellular energy is primarily produced by F(1)F(0) ATP synthase.
- This enzyme utilizes an electrochemical proton gradient to synthesize adenosine triphosphate (ATP).
- The enzyme's function depends on the rotation of its membranous F(0) motor components.
Purpose of the Study:
- To elucidate the mechanism of F(1)F(0) ATP synthase in cellular energy production.
- To understand the factors influencing efficient rotation of the F(0) motor.
- To detail the molecular interactions driving ion translocation and ATP synthesis.
Main Methods:
- Analysis of the F(1)F(0) ATP synthase structure and function.
- Investigating the role of the electrochemical proton gradient (DeltamuH(+)) in enzyme activity.
- Examining the interplay between the c-ring, stator a subunit, and coupling ions.
Main Results:
- Efficient rotation requires a substantial driving force (DeltamuH(+)), including membrane potential (Deltapsi) and proton concentration gradient (DeltapH).
- High proton concentration at the P side, maintained by dynamic proton movements, is crucial.
- Ion translocation involves a complex interaction between c-ring binding sites, stator arginine, and coupling ions.
Conclusions:
- F(1)F(0) ATP synthase is a sophisticated molecular machine essential for cellular energy production.
- The enzyme's efficiency is governed by proton gradient dynamics and precise molecular interactions.
- Rotation of the c-ring is mechanically transmitted to the gamma-subunit, inducing conformational changes for ATP synthesis.
Related Concept Videos
01:18ATP Synthase: Structure
ATP synthase or ATPase is among the most conserved proteins found in bacteria, mammals, and plants. This enzyme can catalyze a forward reaction in response to the electrochemical gradient, producing ATP from ADP and inorganic phosphate. ATP synthase can also work in a reverse direction by hydrolyzing ATP and generating an electrochemical gradient. Different forms of ATP synthases have evolved special features to meet the specific demands of the cell. Based on their specific feature, ATP...
01:48ATP Synthase: Mechanism
In animals, the mitochondrial F1F0 ATP synthase is the key protein that synthesizes ATP molecules through a complex catalytic mechanism. While the nuclear genome encodes the majority of ATP synthase subunits, the mitochondrial genome encodes some of the enzyme's most critical components. The formation of this multi-subunit enzyme is a complex multi-step process regulated at the level of transcription, translation, and assembly. Defects in one or more of these steps can result in decreased ATP...
01:22Chemiosmosis and ATP Synthesis
The electron transport chain is a critical component of cellular respiration, occurring in the inner mitochondrial membrane. It facilitates the transfer of high-energy electrons from reduced cofactors NADH and FADH₂ to molecular oxygen, the final electron acceptor. This transfer of electrons through a series of protein complexes is tightly coupled to the translocation of protons across the membrane, generating a proton gradient essential for ATP synthesis.Electron Flow and Proton...
01:28ATP and Macromolecule Synthesis
Biological macromolecules are organic compounds, predominantly composed of carbon atoms. The carbon atoms are covalently bonded with hydrogen, oxygen, nitrogen, and other minor elements. There are four major biological macromolecule classes: carbohydrates, lipids, proteins, and nucleic acids.
Most macromolecules are composed of single subunits, or building blocks, called monomers. The monomers combine with each other using covalent bonds to form larger molecules known as polymers.
Conversion of...
Most macromolecules are composed of single subunits, or building blocks, called monomers. The monomers combine with each other using covalent bonds to form larger molecules known as polymers.
Conversion of...
01:23ATP and Energy Production
Adenosine triphosphate (ATP) is a critical molecule that functions as the main energy carrier in cells. Structurally, ATP consists of an adenosine molecule—comprising adenine and ribose—bonded to three phosphate groups. The high-energy bonds between these phosphate groups store significant amounts of potential energy. This energy is released during hydrolysis, wherein ATP is converted to adenosine diphosphate (ADP) or adenosine monophosphate (AMP), driving a variety of essential cellular...
01:41The Supercomplexes in the Crista Membrane
The mitochondrial cristae membrane is the primary site for the oxidative phosphorylation (OXPHOS) process of energy conversion mediated through respiratory complexes I to V. These complexes have been widely studied for decades, and it has been proven that they form supramolecular structures called respiratory supercomplexes (SC). These higher-order complexes may be crucial in maintaining the biochemical structure and improving the physiological activity of the individual complexes while...