| 释义 |
coenzyme Q
coenzyme Qn. Abbr. CoQ See ubiquinone.coenzyme Q n (Biochemistry) a quinone derivative, present in biological cells, that functions as an electron carrier in the electron transport chain. Also called: ubiquinone Thesaurus| Noun | 1. | coenzyme Q - any of several quinones found in living cells and that function as coenzymes that transfer electrons from one molecule to another in cell respirationubiquinonebiochemistry - the organic chemistry of compounds and processes occurring in organisms; the effort to understand biology within the context of chemistrycoenzyme - a small molecule (not a protein but sometimes a vitamin) essential for the activity of some enzymesbenzoquinone, quinone - any of a class of aromatic yellow compounds including several that are biologically important as coenzymes or acceptors or vitamins; used in making dyes |
EncyclopediaSeecoenzymecoenzyme 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.co·en·zyme Q (CoQ, Q), (kō-en'zīm), Designation applied to ubiquinones with isoprenoid side chains consisting of variable numbers of isoprene units. CoQ mediates electron transfer between cytochromes b and c, and is chemically similar to vitamins E and K and to other tocopherols, quinones, and tocols. the length of the isoprenoid side chain distinguishes one type of CoQ from another; for example, ubiquinone-10, the typical mammalian ubiquinone, has a side-chain of 10 isoprene units.co·en·zyme Q (kō-en'zīm) Quinones with isoprenoid side chains (specifically, ubiquinones) that mediate electron transfer between cytochrome b and cytochrome c. coenzyme Q (ubiquinone) a quinone derivative with a variable length isoprenoid side chain at position 6 on the molecule. Ubiquinone is an oxidation-reduction COENZYME that functions in the respiratory ELECTRON TRANSPORT SYSTEM as a carrier of electrons between DEHYDROGENASES and CYTOCHROMES.AcronymsSeeCOQcoenzyme Q
Synonyms for coenzyme Qnoun any of several quinones found in living cells and that function as coenzymes that transfer electrons from one molecule to another in cell respirationSynonymsRelated Words- biochemistry
- coenzyme
- benzoquinone
- quinone
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