Definitions for oxidative phosphorylation
Random House Webster's College Dictionary
the aerobic synthesis, coupled to electron transport, of ATP from phosphate and ADP.
Origin of oxidative phosphorylation:
an enzymatic process in cell metabolism that synthesizes ATP from ADP
Oxidative phosphorylation is the metabolic pathway in which the mitochondria in cells use their structure, enzymes, and energy released by the oxidation of nutrients to reform ATP. Although the many forms of life on earth use a range of different nutrients, ATP is the molecule that supplies energy to metabolism. Almost all aerobic organisms carry out oxidative phosphorylation. This pathway is probably so pervasive because it is a highly efficient way of releasing energy, compared to alternative fermentation processes such as anaerobic glycolysis. During oxidative phosphorylation, electrons are transferred from electron donors to electron acceptors such as oxygen, in redox reactions. These redox reactions release energy, which is used to form ATP. In eukaryotes, these redox reactions are carried out by a series of protein complexes within the cell's intermembrane wall mitochondria, whereas, in prokaryotes, these proteins are located in the cells' intermembrane space. These linked sets of proteins are called electron transport chains. In eukaryotes, five main protein complexes are involved, whereas in prokaryotes many different enzymes are present, using a variety of electron donors and acceptors.
U.S. National Library of Medicine
Electron transfer through the cytochrome system liberating free energy which is transformed into high-energy phosphate bonds.
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"oxidative phosphorylation." Definitions.net. STANDS4 LLC, 2013. Web. 5 Dec. 2013. <http://www.definitions.net/definition/oxidative phosphorylation>.