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 ?
Chemiosmosis swelled away from the molecular level until it encompassed the entire world.
More recently there has been a consideration of transition metals with respect to chemiosmosis (Nitschke and Russell, 2009).
Early organisms likely exploited these gradients through a process called chemiosmosis, in which the proton gradient is used to drive synthesis of the universal energy currency, ATP, or simpler equivalents.