✦ LIBER ✦

Genetic and biochemical aspects of sucrase fromDrosophila melanogaster

✍ Scribed by Melvin J. Oliver; John H. Williamson

Publisher: Springer
Year: 1979
Tongue: English
Weight: 487 KB
Volume: 17
Category: Article
ISSN: 0006-2928
DOI: 10.1007/bf00504311

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✦ Synopsis

Isoelectrofocusing of abdominal extracts of Drosophila melanogaster revealed the existence of two forms of sucrase (E.C. 3.2.1.26). One form exhibited an isoelectric point of 4.63 +/- 0.02 while the other form exhibited an isoelectric point of 4.83 +/- 0.02. The localization of the structural gene for sucrase is proposed on the basis of enzyme determinations in a series of duplication- and deletion-bearing aneuploids. We suggest that the sucrase structural gene lies between 31CD and 31EF on the left arm of chromosome 2 and that the two forms of abdominal sucrase derive from a common protein coded for by a single sucrase gene designated Sucr+.

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