UAS regulatory sequences drive expression of a mutant form of Hsap\RUNX1::Hsap\RUNX1T1 in which DNA binding and CBFβ binding have been abrogated. The tyrosine at residue 113 and the threonine at residue 161 have been mutated to alanine, and the arginine at residue 174 has been mutated to glutamine.
Expression of Hsap\RUNX1::Hsap\RUNX1T1YTR.Scer\UAS.cSa under the control of Scer\GAL4Hml.Δ has no effect on third instar larval hemocyte numbers.