UAS regulatory sequences drive expression of a chimeric protein in which the Pvr extracellular ligand-binding domain has been replaced by the dimerization domain of the bacteriophage λ cI repressor (to induce constitutive dimerization of the encoded protein). A Tag:MYC epitope has been inserted at the junction of the λ and Pvr sequences. In addition, 9 Tyr residues in the Pvr intracellular domain have been mutated to non-phosphorylatable Phe residues (amino acid replacements Y985F, Y998F, Y1008F, Y1046F, Y1048F, Y1264F, Y1271F, Y1278F and Y1286F).
Migration of border cells is less severely impaired in PvrYFc.Scer\UAS.T:λ\cI-DD,T:Hsap\MYC; Scer\GAL4slbo.2.6 animals than in Pvrλ.Scer\UAS.T:Hsap\MYC; Scer\GAL4slbo.2.6 animals.
PvrYFc.λ.UAS.Tag:MYC has border follicle cell phenotype, non-enhanceable by Scer\GAL4slbo.2.6/PvrYFc.λ.UAS.Tag:MYC
Scer\GAL4slbo.2.6/PvrYFc.λ.UAS.Tag:MYC is a non-enhancer of border follicle cell phenotype of PvrYFc.λ.UAS.Tag:MYC
Pvf1Scer\UAS.P\T.cRb does not enhance border follicle cell migration defects due to PvrYFc.Scer\UAS.T:λ\cI-DD,T:Hsap\MYC; Scer\GAL4slbo.2.6.