UASp regulatory sequences drive expression of full-length arm which carries a Y667E amino acid replacement (phosphomimetic mutation). The coding sequence is tagged with Tag:HA.
The defects in axis elongation seen in embryos expressing AblGL00234 under the control of Scer\GAL4mat.αTub67C.T:Hsim\VP16 are partially rescued by co-expression of armY667E.Scer\UAS.P\T.T:Ivir\HA1.