UAS regulatory sequences drive expression of a mutant form of Scr lacking the DYTQL motif (a D111Q substitution and deletion of amino acids 112-118), NANGE motif (replacement of residues 316-319 (STVN) with alanines), TS motif (replacement of residues 329 and 330 with alanines) and CTD domain (deletion of amino acids 388-390).
Expression of ScrΔDYTQL.NANGE.TS.CTD.Scer\UAS under the control of Scer\GAL4arm.PU results in ectopic T1 beards. Ectopic tarsi are seen when ScrΔDYTQL.NANGE.TS.CTD.Scer\UAS is expressed under the control of Scer\GAL4dpp.PU.
Scer\GAL4pb.PJ, ScrΔDYTQL.NANGE.TS.CTD.UAS, pbUAS.EGFP has proboscis | ectopic phenotype
Co-expression of ScrΔDYTQL.NANGE.TS.CTD.Scer\UAS and pbScer\UAS.T:Avic\GFP-EGFP under the control of Scer\GAL4pb.PJ results in weak transformation of the antenna to proboscis.