coenzyme A

noun Biochemistry.

a coenzyme, composed of a phosphorylated derivative of pantothenic acid linked to adenylic acid, that participates in the transfer of acyl groups in fatty acid metabolism and amino acid metabolism. Abbreviation: CoA

Origin of coenzyme A

First recorded in 1935–40 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for coenzyme a

coenzyme A


a constituent of biological cells that functions as the agent of acylation in metabolic reactionsAbbreviation: CoA
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

coenzyme a in Medicine

coenzyme A


A coenzyme present in all living cells that functions as an acyl group carrier and is necessary for fatty acid synthesis and oxidation, pyruvate oxidation, and other acetylation.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

coenzyme a in Science

coenzyme A

A coenzyme that consists of a nucleotide linked to pantothenic acid (part of the vitamin B complex), is present in all living cells, and functions as an acyl group carrier. Coenzyme A is necessary for fatty acid synthesis and oxidation, pyruvate oxidation, and other acetylation reactions. In cellular respiration, each of two acetyl groups derived from the original glucose molecule attaches itself to coenzyme A as acetyl coenzyme A and then enters the Krebs cycle.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.