Breakpoint of Df(1)Ilp641, in which the 5' upstream region and first exon of Ilp6 is removed, though the full Ilp6 ORF is intact.
Imprecise excision of a progenitor insertion has resulted in a deletion that removes the first exon and part of the first intron of Ilp6.
Ilp641 homozygous mutant third instar larvae present decreased numbers of abdominal lateral and dorsal, but not ventral, adult muscle precursor cells, as compared to controls.
Mutant adults show a reduction in mass compared to controls.
Mutant wandering stage larvae have normal levels of circulating carbohydrates and of triacylglycerides.
The growth of Ilp641 adults is compromised relative to that of control animals upon starvation (the mutant adults show a greater reduction of mass under starvation conditions compared to standard feeding conditions than do control adults).
Ilp641 is rescued by Scer\GAL4Cg.PA/Ilp6UAS.cIa