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[ahy-suh-zahym] /ˈaɪ səˌzaɪm/
noun, Biochemistry.
any of the genetically variant forms of certain enzymes that catalyze the same reaction but that may differ in activity, composition, or physical properties.
Also called isoenzyme.
Origin of isozyme
First recorded in 1955-60; iso- + (en)zyme Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for isozymes


any of a set of structural variants of an enzyme occurring in different tissues in a single species Also called isoenzyme
Derived Forms
isozymic (ˌaɪsəʊˈzaɪmɪk; -ˈzɪm-) adjective
Word Origin
from iso- + (en)zyme
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
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isozymes in Medicine

isozyme i·so·zyme (ī'sə-zīm')
Any of a group of enzymes that are similar in catalytic properties but are differentiated by variations in physical properties, such as isoelectric point. Also called isoenzyme.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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