Deletion of 19 amino acids from the leucine zipper domain in the carboxy terminal.
Alone and in combination with mod(mdg4)ul, su(Hw)Δ283 behaves like su(Hw)e7 with respect to its effect on y mutations. su(Hw)e7 and su(Hw)Δ283 partially suppress acHw-1, and mod(mdg4)ul enhances the suppressing effect of su(Hw)Δ283.
su(Hw)Δ283 is a suppressor of visible phenotype of scme
su(Hw)Δ283 is a suppressor of anterior postalar bristle phenotype of scme
su(Hw)Δ283 is a suppressor of anterior supraalar bristle phenotype of scme
su(Hw)Δ283 is a suppressor of phenotype of y2
The scme bristle phenotype is moderately suppressed by su(Hw)Δ283.