isozyme

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Related to Allozymes: RFLP, haplotype

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

isozyme

/iso·zyme/ (i´so-zīm) one of the multiple forms in which an enzyme may exist in an organism or in different species, the various forms differing chemically, physically, or immunologically, but catalyzing the same reaction.

isozyme

(ī′sə-zīm′)
n.
An isoenzyme.

i′so·zy′mic adj.

isozyme

See isoenzyme.

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.

isozyme

see ISOENZYME.

isozyme

isoenzyme.
References in periodicals archive ?
In all of these cases, allozyme electrophoresis was the method used for species identification.
Genotypic and allelic frequencies were determined by direct counts from allozyme phenotypes, and the resulting data were analyzed by various statistical methods to describe the genetic structure of the Ruditapes decussatus populations.
Allozymes and microsatellites genetic variability parameters for two Drosophila maculifrons natural populations from Guarapuava/PR (Brazil).
Diversity estimates obtained with allozymes indicate that these populations have lower allelic diversity and low level of observed heterozygosity.
Hybridization and Introgression Among Species of Sunfish (Lepomis): Analysis by Mitochondrial DNA and Allozyme Markers.
Initially, Kaeriyama (1999) indicated that, on the basis of allozymes, Japanese populations were less variable than Russian wild populations.
By means of cellulose acetate gel electrophoresis, wherein 8 allozyme loci (FUM, G6PDH, GOT, IDH, LDH, MPI, PGI, and PGM) were studied, we investigate whether the genetic variation among species is larger compared to the variation among populations within species and indicative of reproductive isolation among the species.
Diagnostic allozymes have been found for specific identification of nearly all the mosquitoes investigated for this purpose, but there is apparently no way of predicting which enzyme systems are most likely to be involved in interspecific divergences.
Overall we were able to determine that Agalinis auriculata has lower levels of allozyme variation (focusing on polymorphism) than its more common congeners, A.