Deletion of approximately 5.4 kb in Dh44-R2 locus ( 2R:12480822 to 12486265), including most of the exons.
A 5444bp deletion that removes most of the coding region of Dh44-R2.
Dh44-R2KO homozygotes fail to show the increased food consumption induced by dietary amino acids normally observed in heterozygous and wild-type controls.