- a molecule that provides the transfer site for biochemical reactions catalyzed by an enzyme.
Origin of coenzyme
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for coenzyme
They can usually be separated from their corresponding enzymes by dialysis, the coenzyme passing through the parchment membrane.
The best known example of a coenzyme in plant tissues is in connection with the activity of the zymase of yeast cells.
- biochem a nonprotein organic molecule that forms a complex with certain enzymes and is essential for their activitySee also apoenzyme
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
acetyl coenzyme A
- An organic compound in which an acetyl group is attached to CoA.
- A compound that functions as a coenzyme in many biological acetylation reactions and is formed as an intermediate in the oxidation of carbohydrates, fats, and proteins.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- A nonprotein organic substance that usually contains a vitamin or mineral and combines with a specific protein, called an apoenzyme, to form an active enzyme system.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.