electron transport chain

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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

electron transport chain

a group of specific carrier molecules in the inner mitochondrial membrane that transfer electrons from hydrogen to oxygen. Electrochemical energy generated via electron transport is transferred to ADP to reform ATP. See also oxidative phosphorylation.
References in periodicals archive ?
Projection of viral predicted peptides on the cyanobacterial PSI crystal structure suggests that the viral PSI components provide a unique way for funneling reducing power from respiratory and other electron transfer chains to PSI, therefore bypassing the need to rely solely on reducing power from the photosystem electron transfer chain.
Examination of liver tissue for mitochondrial staining is a marker of mitochondrial function and electron transfer chain alteration.
The concepts of glycolysis, Krebs cycle, and the electron transfer chain are abstract with multiple steps that are difficult to follow.
The common final pathway in the mitochondrial energy metabolism is the electron transfer chain, composed of two mobile carriers (coenzyme Q and cytochrome C) and four multimeric enzymatic complexes (complexes I, II, III, and IV), all embedded in the inner mitochodrial membranes (14).
Both photosynthesis and respiration, which take place in plants cells, involve electron transfer chains.

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