SYN: isoenzyme.
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iso·zy·mic .ī-sə-'zī-mik adj
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n.
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iso·zyme (iґso-zīm) one of various structurally related forms of an enzyme, each having the same mechanism but with differing chemical, physical, or immunologic characteristics. For example, lactate dehydrogenase, a tetramer, exists as five isozymes arising from different combinations of its two kinds of subunits. Called also isoenzyme.Medical dictionary. 2011.