ISSN:
1573-4927
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Chemistry and Pharmacology
Notes:
Abstract At the gene locus for esterase-2 (E.C. 3.1.1.1) of the meal moth Ephestia kühniella, three autosomally inherited and codominantly expressed alleles exist. In the homozygous condition, the alleles 2 s , 2 m , and 2 f determine the subunits s, m, and f which aggregate to form enzymatically active molecules, probably dimers, found in starch gel as single bands of slow, intermediate, and fast mobility. In the heterozygous state, however, three-banded patterns are found, composed of the two homodimer parental bands and a heterodimer band of intermediate mobility. Inactivation of the bands by treatment with heat and 4 m urea has been followed quantitatively. The ff band is inactivated faster than the mm, ss, and ms bands, all of which are inactivated at the same rate. Hybrid fm and fs bands, however, show intermediate inactivation rates.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00485700
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