A cDNA fragment corresponding to sd with an internal deletion, removing amino acids 88-123, is expressed under the control of UASt regulatory sequences. This deletion results in partial removal of the sd TEA domain.
wing, with Scer\GAL4vg.boundary, sd58d
wing, with Scer\GAL4vg.boundary, sdETX4
Expression of sdΔ88-123.Scer\UAS, driven by Scer\GAL4vg.boundary, leads to an enhancement of the wing phenotypes seen in sdETX4 and sd58d mutants.