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A phenol oxidase polymorphism in Drosophila melanogaster

โœ Scribed by P. Batterham; S. W. Mackechnie

Publisher
Springer Netherlands
Year
1980
Tongue
English
Weight
464 KB
Volume
54
Category
Article
ISSN
0016-6707

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โœฆ Synopsis

A phenol oxidase enzyme (PHOX) has been identified on electrophoretic gels following simple activation by 50% propan-2-ol in phosphate buffer. Three electrophoretically detectable allozymes were found in natural populations and a structural locus (Phox) for this enzyme was mapped to position 80.6 on the second chromosome, This is the first positive identification of a structural locus for any of the proteins of the complex system of phenol oxidase enzymes in Drosophila. Evidence is presented to indicate that PHOX is a different enzyme from any of the A protein components in this system, described by Mitchell & Weber (1965). However, like the A components, the level of PHOX activity is modified by genes at the tyrosinase-I and lozenge loci.

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