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Pronunciation: i'so-en'zim

Definition: An enzyme (one of a group) that catalyze the same reaction but may be differentiated by variations in physical properties, such as isoelectric point, electrophoretic mobility, kinetic parameters, or modes of regulation, lactate dehydrogenase, a tetramer composed of varying amounts of a and ß subunits (4a, 3a + 1ß, 2a + 2ß, 1a + 3ß, and 4ß).

Synonym(s): isozyme

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.