UASt regulatory sequences drive expression of Hsap\TOR1A carrying a 3bp deletion that removes the E302/303 residue. This lesion is associated with autosomal dominant torsion dystonia-1. The protein acts as a dominant negative in flies.
Most cases of TOR1A (DYT1)-induced dystonia in human patients are linked to a deletion resulting in a loss of one of a pair of glutamic acid residues at the positions 302/303. Ectopic expression of a human transgene Hsap\TOR1AΔE.Scer\UAS.cWa bearing this deletion fails to improve the locomotion deficit in a fly model of dystonia, the TorsinKO13 mutants.
Expression of Hsap\TOR1AScer\UAS.cWa under the control of Scer\GAL4elav.PU results in deficit in larval (decreased peristaltic rate in third instar larvae) as well as adult locomotion.
Scer\GAL4elav.PU/Hsap\TOR1AΔE.UAS.cWa is a non-suppressor of abnormal locomotor behavior | third instar larval stage phenotype of TorsinKO13
Scer\GAL4elav.PU, Hsap\TOR1AUAS.cWa, Hsap\TOR1AΔE.UAS.cWa is a non-suppressor of abnormal locomotor behavior | third instar larval stage phenotype of TorsinKO13
The deficit in larval (decreased peristaltic rate) as well as adult locomotion characteristic for TorsinKO13/Y hemizygotes cannot be rescued by expression of Hsap\TOR1AΔE.Scer\UAS.cWa either alone or in combination with Hsap\TOR1AScer\UAS.cWa under the control of Scer\GAL4elav.PU in the mutant background.