A cDNA fragment corresponding to sd with an internal deletion, removing amino acids 124-159, is expressed under the control of UASt regulatory sequences. This deletion removes the sd TEA domain.
wing, with Scer\GAL4vg.boundary, sd58d
wing, with Scer\GAL4vg.boundary, sdETX4
Expression of sdΔ124-159.Scer\UAS, driven by Scer\GAL4vg.boundary, leads to an enhancement of the wing phenotypes seen in sdETX4 and sdETX4 mutants.