cytochrome oxidase


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Related to cytochrome oxidase: Cytochrome P450

cytochrome oxidase

n.
An oxidizing enzyme that contains iron and a porphyrin and is found in the mitochondrial membrane, where it catalyzes the transfer of electrons to oxygen as part of the electron transport chain, ultimately leading to the formation of ATP.

cytochrome oxidase

An enzyme present in most cells that oxidizes reduced cytochrome to cytochrome.
See also: oxidase

cytochrome oxidase

an enzyme acting as the last hydrogen electron carrier in the ELECTRON TRANSPORT SYSTEM, receiving an electron from CYTOCHROME and passing it on to oxygen, with the formation of water.

cytochrome

any of a class of hemoproteins, widely distributed in animal and plant tissue, whose main function is electron transport; distinguished according to their prosthetic group as a, b, c and d.

cytochrome b5 reductase
a flavoprotein involved in the desaturation of fatty acids in the liver.
cytochrome oxidase
an a type cytochrome which contains copper and receives electrons from another cytochrome, of the c type, and transfers them to oxygen atoms allowing the oxygen to combine with hydrogen atoms to form water. A nutritional deficiency of copper leads to a general reduction in metabolic rate because of the absence of cytochrome oxidase a.
cytochrome system
the sum of cytochromes which play a part in the body's metabolic processes. Includes the cytochrome oxidases and cytochrome reductases.
References in periodicals archive ?
DNA extracts were used to amplify the DNA fragment barcode (barcode) of ~700 nt of mitochondrial gene cytochrome oxidase I with the MTNF / MTNR (Hebert et al.
2007), although cytochrome oxidase c subunit I (CO1) is used frequently to distinguish differences between close species.
We also sequenced the 18S ribosomal subunit DNA and cytochrome oxidase B (cyt-B) from individual ascidians from populations of P.
Table 1--Collection localities, GenBank accession numbers for the cytochrome oxidase subunit 1 sequences, and catalog numbers for voucher specimens of Ictalurus from northwestern Mexico.
Protocols for species specific mitochondrial cytochrome oxidase II primers for major aphid species were used as given in Chen et al.
Exogenous cytochrome C restores myocardial cytochrome oxidase activity into the late phase of sepsis.
Sequencing of mitochondrial DNA cytochrome oxidase subunit for identification of sarcosaphagous flies (Diptera) in Chengdu.
Changes in the visual system of monocularly sutured or enucleated cats demonstrable with cytochrome oxidase histochemistry.
The enzyme powering this mechanism, cytochrome oxidase (COX), is genetically and structurally similar to NOR, suggesting a common ancestor.
Importantly, in intermittently starved rats Petrasek [18] observed a significant increase in cytochrome oxidase activity compared with ad libitum fed controls and rats with simple chronic caloric undernutrition.
Changes in cytochrome oxidase activity following spatial working memory learning in rats treated with tacrine