Definition of ubiquinone in English:


Line breaks: ubi¦quin|one
Pronunciation: /juːˈbɪkwɪnəʊn


  • Any of a class of compounds which occur in all living cells and which act as electron-transfer agents in cell respiration. They are substituted quinones.
    More example sentences
    • The regulation of this biosynthetic pathway at the mitochondrial level depends on the ubiquinone, the alternative oxidase and a species-specific uncoupling protein.
    • Antioxidant compounds such as vitamins C and E, lipoic acid, ubiquinones, superoxide dismutase, catalase, and glucathione peroxidase can limit oxidative damage.
    • Interactions of organic molecules such as dihydropyridines, ubiquinone, tryptophan, and halothane with lipid bilayers have been studied through molecular dynamics simulations.


1950s: blend of ubiquitous and quinone.

More definitions of ubiquinone

Definition of ubiquinone in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day kerf
Pronunciation: kəːf
a slit made by cutting with a saw