isoenzyme

isoenzyme /iso·en·zyme/ (-en´zīm) isozyme.

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i·so·en·zyme (s-nzm)

n.

See isozyme.

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iso·en·zymic (-zmk, -zmk) adj.

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Isoenzyme

One of a group of enzymes that catalyze the same reaction but are differentiated by variations in physical properties.

Mentioned in: Alkaline Phosphatase Test, Lactate Dehydrogenase Isoenzymes Test, Lactate Dehydrogenase Test

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isoenzyme

[ī′sō·en′zīm]

Etymology: Gk, isos + en, in, syme, ferment

a chemically distinct form of an enzyme. The various forms are distinguishable in analysis of blood samples, which aids in the diagnosis of disease. Different enzymes that catalyze the same physiologic reaction may also exist as isoenzymes in different animal species. Also called isozyme.

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isoenzyme [i″so-en´zīm]

any of several forms of an enzyme that all catalyze the same reaction but may differ in reaction rate, inhibition by various substances, electrophoretic mobility, or immunologic properties. Several enzymes, particularly alkaline phosphatase, lactate dehydrogenase, and creatine kinase, have clinically important isoenzymes. Isoenzymes are separated by electrophoresis, and the pattern indicates which damaged organ has released the enzymes.

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isoenzyme

any of the several forms of an enzyme, all of which catalyze the same reaction, but which may differ in reaction rate, inhibition by various substances, electrophoretic mobility or immunological properties. Several enzymes, particularly alkaline phosphatase, lactate dehydrogenase and creatine kinase, have clinically important isoenzymes. Isoenzymes are separated by electrophoresis, and the pattern indicates which damaged organ has released the enzymes.