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.
References in periodicals archive ?
All life on Earth is powered by a process called chemiosmosis, where the chemical adenosine triphosphate (ATP), the rechargeable chemical 'battery' for life, is both broken down and re-formed during respiration to release energy used to drive the reactions of life, or metabolism.
Parenthetically, we have observed a tendency to refer to this model as 'chemiosmosis', which Mitchell himself regarded as "a term of abuse" [8].
But then I came to chemiosmosis, the last process in cellular respiration.
More recently there has been a consideration of transition metals with respect to chemiosmosis (Nitschke and Russell, 2009).