UASt regulatory sequences drive expression of a mutant form of tum lacking amino acids 66-102 encoding the pbl interacting domain.
Scer\GAL4prd.RG1/tumΔPbl.UAS fails to rescue tumDH15
Expression of tumΔPbl.Scer\UAS driven by Scer\GAL4prd.RG1 fails to rescue cytokinesis in tumDH15 mutant embryos.