ubiquinone /ubi·qui·none/ (Q) (Q10) (u″bĭ-kwĭ-nōn´) a quinone derivative with an unsaturated branched hydrocarbon side chain occurring in the lipid core of inner mitochondrial membranes and functioning in the electron transport chain. In naturopathic practice it is used for a wide variety of indications; also used as a dietary supplement for its antioxidant properties.
ubiquinone
coenzyme [ko-en´zīm]
u·bi·qui·none (y  b -kw-n n , y-bkw -nn)n. A quinone compound that serves as an electron carrier between various flavoproteins and in cellular respiration. |
ubiquinone
[yo̅o̅bik′winōn]
a quinone derivative that occurs in the lipid core of mitochondrial membranes and functions in the electron transport chain as a carrier. Formerly called coenzyme Q.
coenzyme [ko-en´zīm]
an organic molecule, usually containing phosphorus and some vitamins, sometimes separable from the enzyme protein; a coenzyme and an apoenzyme must unite in order to function (as a holoenzyme).
coenzyme A a coenzyme essential for carbohydrate and fat metabolism; among its constituents are pantothenic acid and a terminal SH group, which forms linkages with various acids, e.g., acetic acid (acetyl CoA) and fatty acids (acyl CoA); abbreviated CoA.
coenzyme Q any of a group of related quinones occurring in the lipid fraction of mitochondria and serving, along with the cytochromes, as an intermediate in electron transport; they are similar in structure and function to vitamin K1.
ubiquinone
coenzyme Q; component of the electrontransfer chain of oxidative phosphorylation.
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