ubiquinone

ubiquinone
A 2,3-dimethoxy-5-methyl-1,4-benzoquinone with a multiprenyl side chain; a mobile component of electron transport. SEE ALSO: coenzyme Q.

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ubi·qui·none yü-'bik-wə-.nōn, .yü-bi-kwi-'nōn n any of a group of lipid-soluble quinones that contain a long isoprenoid side chain and that function in the part of cellular respiration comprising oxidative phosphorylation as electron-carrying coenzymes in the transport of electrons from organic substrates to oxygen esp. along the chain of reactions leading from the Krebs cycle esp coenzyme Q10

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n.
a coenzyme that acts as an electron transfer agent in the mitochondria of cells (see electron transport chain).

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ubi·qui·none (u″bĭ-kwĭ-nōnґ) a quinone derivative with a variable length side chain of isoprene units; in mammals it usually contains ten such units. It occurs in the lipid core of inner mitochondrial membranes and functions in the electron transport chain (q.v.), acting as a point of entry for electrons from FAD and transferring them to ubiquinol–cytochrome-c reductase. In naturopathic practice it is administered for a wide variety of indications, and it is used as a dietary supplement for its antioxidant properties. Abbreviated Q or Q10. Called also coenzyme Q, coenzyme Q10>, and ubidecarenone.

Medical dictionary. 2011.

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  • ubiquinone — ● ubiquinone nom féminin (latin ubique, partout) Synonyme de coenzyme Q. ● ubiquinone (synonymes) nom féminin (latin ubique, partout) Synonymes : coenzyme Q …   Encyclopédie Universelle

  • ubiquinone — ubiquinone. См. убихинон. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • ubiquinone — ubiquinone. = coenzyme Q (см.). (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • ubiquinone-6 — Ubiquinone 30; coenzyme Q 6; 2,3 dimethoxy 5 methyl 6 hexaprenyl 1,4 benzoquinone …   Medical dictionary

  • ubiquinone-10 — Ubiquinone 50; coenzyme Q 10; 2,3 dimethoxy 5 methyl 6 decaprenyl 1,4 benzoquinone …   Medical dictionary

  • Ubiquinone — Coenzyme Q10 Coenzyme Q10 Général Nom IUPAC 2,3 diméthoxy 5 méthyl 6 decaprénylbenzoquinone Synonymes …   Wikipédia en Français

  • Ubiquinone 10 — Coenzyme Q10 Coenzyme Q10 Général Nom IUPAC 2,3 diméthoxy 5 méthyl 6 decaprénylbenzoquinone Synonymes …   Wikipédia en Français

  • ubiquinone — (= coenzyme Q) Small molecule with a hydrocarbon chain (usually of several isoprene units) that serves as an important electron carrier in the respiratory chain. The acquisition of an electron and a proton by ubiquinone produces ubisemiquinone (a …   Dictionary of molecular biology

  • Ubiquinone — Убихинон Коэнзим Q10 или Убихинон или кофермент Q10 или кофермент Q (ubiquinone, coenzyme Q10, coenzyme Q) это бензохинон, содержащий хиноидную группу (отсюда обозначение Q) и содержащий 10 изопрениловых групп (отсюда число 10). Содержание 1… …   Википедия

  • ubiquinone — noun Etymology: blend of Latin ubique everywhere and English quinone; from its widespread occurrence in nature Date: 1958 any of a group of lipid soluble quinones that are found especially in mitochondria, have a long isoprenoid side chain, and… …   New Collegiate Dictionary

  • ubiquinone — u·bi·qui·none (yo͞o bĭ kwĭ nōnʹ, kĭnʹōn) n. A quinone compound that serves as an electron carrier between flavoproteins and in cellular respiration.   [Latin ubī(que), everywhere; see ubiquity + quinone.] * * * ▪ biochemistry also called… …   Universalium

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