Genetic and biochemical aspects of trehalase from Drosophila melanogaster.

Only one molecular form of trehalase (E.C. 3.2.1.28) was detectable in adult Drosophila melanogaster by polyacrylamide gel electrophoresis and isoelectric focusing. An examination of duplication- and deletion-bearing aneuploids exhibiting dosage sensitivity indicated that the enzyme is encoded by a gene, Treh+, located between 55B and 55E of the second chromosome. The tissue-specific soluble and particulate forms of trehalase appear to be manifestations of a single protein encoded by a single gene.