chemiosmosis


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chemiosmosis

(ˌkɛmɪɒzˈməʊsɪs) or

chemosmosis

n
1. (Biochemistry) biochem the mechanism by which the synthesis and utilization of the biochemical energy source ATP is regulated: the energy generated by oxidative phosphorylation generates a proton gradient across the membrane of the mitochondrion that drives the enzymic resynthesis of ATP
2. (Chemistry) a chemical reaction between two compounds after osmosis through an intervening semipermeable membrane
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
Translations
quimiosmosis
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References in periodicals archive ?
Generally, the acquisition of heavy metals takes place in bacteria through harnessing of uptake systems (unspecific or specific) which proceeded by the chemiosmosis gradient across the cytoplasmic membrane of bacteria.
There are two major pathways appeared to be affected in this group of interacting genes; one is the upregulation of the COX7 superfamily and its related pathways such as the AMPK enzyme complex pathway and respiratory electron transport, ATP synthesis by chemiosmosis coupling, and heat production by uncoupling proteins; GO annotations related to this gene include electron carrier activity and cytochrome c oxidase activity; another is the downregulation of the insulin-like growth factor binding protein and its related pathways which include myometrial relaxation and contraction pathways and development of IGF-1 receptor signaling; GO annotations related to this gene include fibronectin binding and insulin-like growth factor I binding.
The mitochondrial uncoupler FCCP is a lipophilic molecule with protonophore properties; in other words, it is capable of interacting with the inner mitochondrial membrane to allow pumped protons to return to the mitochondrial matrix, dissipating the proton gradient and influencing the mitochondrial chemiosmosis [15, 16].
The book begins with basic theory of chemiosmosis, followed by ion transport and redox potentials across energy conserving membranes.