Medical term:
coenzyme
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.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
co·en·zyme (Co),
(kō-en'zīm),A substance (excluding solo metal ions) that enhances or is necessary for the action of enzymes; coenzymes are of smaller molecular size than the enzymes themselves, are dialyzable and relatively heat-stable, and are usually easily dissociable from the protein portion of the enzyme; several vitamins are coenzyme precursors.
Synonym(s): cofactor (1)
Farlex Partner Medical Dictionary © Farlex 2012
coenzyme
(kō-ĕn′zīm′)n.
An organic substance that reversibly combines with a specific protein, the apoenzyme, and with a substrate to form an active enzyme system.
co′en·zy·mat′ic (-zə-măt′ĭk) adj.
co·en′zy·mat′i·cal·ly adv.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
co·en·zyme
(kō-en'zīm)A substance (excluding solo metal ions) that enhances or is necessary for the action of enzymes; coenzymes are of smaller molecular size than the enzymes themselves; several vitamins are coenzyme precursors.
Synonym(s): cofactor (1) .
Synonym(s): cofactor (1) .
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
coenzyme
an organic COFACTOR molecule smaller than protein that bonds with a specific ENZYME while the reaction is being catalysed. Like enzymes, coenzymes are not altered or used up in the reaction and can be used many times, but a minimal quantity is required for normal level of enzyme function and thus normal health. This explains why VITAMINS, which often act as coenzymes, are so essential. See also ACETYLCOENZYME A.Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
Coenzyme
A substance needed by enzymes to produce many of the reactions in energy and protein metabolism in the body.
Mentioned in: Beriberi
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.
co·en·zyme
(kō-en'zīm)A substance (excluding solo metal ions) that enhances or is necessary for the action of enzymes; coenzymes are of smaller molecular size than the enzymes themselves; several vitamins are coenzyme precursors.
Medical Dictionary for the Dental Professions © Farlex 2012
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