isoenzyme

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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.

i·so·en·zyme

(ī'sō-en'zīm),
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, for example, lactate dehydrogenase, a tetramer composed of varying amounts of α and β subunits (that is, 4α, 3α + 1β, 2α + 2β, 1α + 3β, and 4β).
Synonym(s): isozyme

isoenzyme

/iso·en·zyme/ (-en´zīm) isozyme.

isoenzyme

(ī′sō-ĕn′zīm′)
n.
An isoform that is an enzyme.

i′so·en·zy′mic adj.

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 physiological reaction may also exist as isoenzymes in different animal species. Also called isozyme.

i·so·en·zyme

(ī'sō-en'zīm)
One of a group of enzymes 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.

isoenzyme (isozyme)

one of a number of ENZYMES that catalyse the same reaction, but are qualitatively different from each other, for example in PRIMARY STRUCTURE.

Isoenzyme

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

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.
References in periodicals archive ?
Isoenzymatic studies have shown that what is usually called the Africanized honey bee does not constitute a single population, but instead includes several local populations with distinct degrees of racial admixture (Lobo et al.
Antipyrine: Antipyrine is used as a model for drugs that are metabolized by the same isoenzymatic cytochrome P450 system.
In Spain, the cultivars 'Carrasquin' and 'Prieto Picudo Tinto' also exhibited identical genotypes, in spite of having significant morphological and isoenzymatic differences (MARTIN et al.
Isoenzymatic analysis of 712 strains of Leishmania infantum in the south of France and relationship of enzymatic polymorphism to clinical and epidemiological features.
Since PODs exist in numerous isoenzymatic forms (Hatzilazarou et al, 2006), further experiments need to clarify the relationship between POD type and root morphological modification due to mycorrhization.
PODs exist in numerous isoenzymatic forms and are separated into anionic (acidic) and cationic (basic) types according to their isoelectric points.
For the isoenzymatic assessment proteins were extracted from leaves and young roots of the seedlings.
Morphological characterization (Cordeiro, 2004) showed only slight differences between them; isoenzymatic analysis presents different patterns in four isozyme systems (Table 1).
guyanensis was identified by genomic and isoenzymatic characterization at the Centre National de Reference des Leishmania, Universite de Montpellier, Montpellier, France.
Polymorphism between Darmor and Samourai was tested by means of 174 RAPD primers, 253 RFLP probes, 46 PCR-specific primers and 10 isoenzymatic systems.
infestans population was not supported by body size measurements (23), antennal sensilla patterns (24), or isoenzymatic and mitochondrial data (14).
Isoenzymatic identification of QTL in crosses of elite maize inbreds.