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Related Concept Videos

ATP Synthase: Structure01:18

ATP Synthase: Structure

18.1K
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...
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ATP Synthase: Mechanism01:48

ATP Synthase: Mechanism

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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...
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Chemiosmosis and ATP Synthesis01:22

Chemiosmosis and ATP Synthesis

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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...
3.5K
Chemiosmosis01:32

Chemiosmosis

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Oxidative phosphorylation is a highly efficient process that generates large amounts of adenosine triphosphate (ATP), the basic unit of energy that drives many cellular processes. Oxidative phosphorylation involves two processes— the electron transport chain and chemiosmosis.
Electron Transport Chain
The electron transport chain involves a series of protein complexes on the inner mitochondrial membrane that undergo a series of redox reactions. At the end of this chain, the electrons...
118.7K
The ADP/ATP Carrier Protein01:42

The ADP/ATP Carrier Protein

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ADP/ATP carrier or AAC protein is the most abundant carrier protein in the inner mitochondrial membrane. It transports large quantities of ADP and ATP, equivalent to the average human body weight, every day. Among other transporters, ACC protein is one of the best-studied members of the mitochondrial carrier protein family. The ADP/ATP carrier protein comprises two transmembrane helices connected to a loop and a single alpha-helix on the matrix side. It switches between two conformational...
4.7K
Electron Transport Chain Components01:29

Electron Transport Chain Components

1.3K
The electron transport chain (ETC) is a crucial metabolic pathway that facilitates energy conversion in prokaryotic and eukaryotic cells. In eukaryotes, the ETC comprises four membrane-associated protein complexes in the inner mitochondrial membrane. In prokaryotes, the ETC in the plasma membrane can vary in composition, with fewer or different complexes depending on the organism and environmental conditions. These complexes transfer electrons from electron donors, such as NADH and FADH2, to...
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Updated: Apr 15, 2026

Visualization of ATP Synthase Dimers in Mitochondria by Electron Cryo-tomography
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Visualization of ATP Synthase Dimers in Mitochondria by Electron Cryo-tomography

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ATP synthase.

Wolfgang Junge1, Nathan Nelson

  • 1Department of Biophysics, Universität Osnabrück, DE-49069 Osnabrück, Germany;

Annual Review of Biochemistry
|April 4, 2015
PubMed
Summary
This summary is machine-generated.

Oxygenic photosynthesis converts sunlight into chemical energy using key proteins like ATP synthase. This process, perfected over billions of years, minimizes energy waste through efficient elastic torque transmission in ATP synthase.

Keywords:
ATP synthesisFOF1 ATPasechloroplastscyanobacteriaphotosynthesisproton transfer

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A Semi-High-Throughput Adaptation of the NADH-Coupled ATPase Assay for Screening Small Molecule Inhibitors
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A Semi-High-Throughput Adaptation of the NADH-Coupled ATPase Assay for Screening Small Molecule Inhibitors
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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Photosynthesis Research

Background:

  • Oxygenic photosynthesis is vital for life, producing oxygen and energy-rich compounds.
  • Key protein complexes, including photosystems I and II, cytochrome b6f, and ATP synthase, drive this process.
  • ATP synthase is also crucial for cellular respiration, highlighting its conserved role.

Purpose of the Study:

  • To elucidate the intricate mechanisms of ATP synthase in oxygenic photosynthesis and respiration.
  • To understand how the perfected machinery minimizes wasteful reactions over evolutionary time.
  • To explore the role of elastic torque transmission in coupling the FO and F1 components of ATP synthase.

Main Methods:

  • Analysis of the structure and function of ATP synthase (FOF1).
  • Investigation of proton-tight coupling membranes.
  • Examination of the elastic torque transmission mechanism between FO and F1 rotary motors.

Main Results:

  • ATP synthase, composed of FO and F1 rotary motors, is embedded in a proton-tight membrane.
  • Elastic torque transmission couples FO and F1, preventing slippage and minimizing energy loss.
  • This elastic coupling allows for different operational "gear ratios" across organisms.

Conclusions:

  • The ATP synthase mechanism, refined over billions of years, demonstrates remarkable efficiency in energy conversion.
  • Elastic torque transmission is a key innovation enabling precise kinetic decoupling while maintaining thermodynamic coupling.
  • This sophisticated mechanism underscores the evolutionary optimization of fundamental biological processes.