coenzyme

[ koh-en-zahym ]
/ koʊˈɛn zaɪm /

noun Biochemistry.

a molecule that provides the transfer site for biochemical reactions catalyzed by an enzyme.

Origin of coenzyme

1905–10; < German Ko-enzym; see co-, enzyme

Related forms

co·en·zy·mat·ic [koh-en-zahy-mat-ik, -zi-] /koʊˌɛn zaɪˈmæt ɪk, -zɪ-/, adjectiveco·en·zy·mat·i·cal·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for coenzyme

  • The best known example of a coenzyme in plant tissues is in connection with the activity of the zymase of yeast cells.

    The Chemistry of Plant Life|Roscoe Wilfred Thatcher
  • They can usually be separated from their corresponding enzymes by dialysis, the coenzyme passing through the parchment membrane.

    The Chemistry of Plant Life|Roscoe Wilfred Thatcher

British Dictionary definitions for coenzyme

coenzyme

/ (kəʊˈɛnzaɪm) /

noun

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

Medicine definitions for coenzyme

coenzyme

[ kō-ĕnzīm′ ]

n.

A thermostable nonprotein organic substance that usually contains a vitamin or mineral and combines with a specific apoenzyme to form an active enzyme system.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for coenzyme

coenzyme

[ kō-ĕnzīm′ ]

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.