chemiosmosis

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chemiosmosis

The movement of ions across a selectively permeable membrane down an electrochemical gradient, usually understood to mean the respiratory chain in mitochondria. As the proton concentration increases in the intermembrane space, a strong electrochemical gradient is established across the inner membrane. The protons can return to the matrix through the ATP synthase complex, and their potential energy is used to synthesise ATP from ADP and inorganic phosphate (Pi).

chemiosmosis

see ELECTRON TRANSPORT SYSTEM.

chemiosmosis

a process in which a proton gradient across a mitochondrial membrane and ATP synthesis pump metabolites across a membrane.
References in periodicals archive ?
Before the widespread acceptance of the chemiosmotic hypothesis, many biochemists searched for the 'high-energy intermediate' coupling electron transfer to ATP synthesis.
The fascinating histories of Dr Mitchell, the Glynn Research Institute and the chemiosmotic hypothesis have been reported previously [18-20].
The history of the development of the chemiosmotic hypothesis illustrates several ideas about the nature of science.