electron transport chain(redirected from E-train)
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e·lec·tron trans·port chain(ĕ-lek'tron trans'pōrt chān)
The final common pathway in aerobic (oxidative) metabolism. Oxygen is a cofactor.
electron transport chain
The stage of cellular respiration in which the most adenosine triphosphate is generated. In this biochemical reaction, electrons are passed along the cytochromes of a cell or mitochondrial membrane and are ultimately accepted by oxygen, producing water. Hydrogen ions (protons) are transported across the membrane. The source of the protons and electrons is primarily nicotinamide adenine dinucleotide, which is recycled during the reaction.Synonym: cytochrome transport system
See also: chain