• synonyms


noun Biochemistry.
  1. the protein component that with a coenzyme forms a complete enzyme.
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Origin of apoenzyme

From French, dating back to 1935–40; see origin at apo-, enzyme
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for apoenzyme


  1. a protein component that together with a coenzyme forms an enzyme
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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

apoenzyme in Medicine


  1. The protein component of an enzyme that combines with the coenzyme to form the active enzyme.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

apoenzyme in Science


  1. The protein component of an enzyme, to which the coenzyme attaches to form an active enzyme.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.