Wild-type His1 gene in the context of a histone gene repeat unit.
Wild-type His2A gene in the context of a histone gene repeat unit.
The ATG start codon has been mutated to AGA, inserting a SacI restriction site, and a 1bp deletion has been introduced at codon 90 to destroy the second in-frame ATG and shift the succeeding reading frame.
Wild-type His2B gene in the context of a histone gene repeat unit.
Wild-type His4 gene in the context of a histone gene repeat unit.
The ATG start codon in each copy of His3 has been mutated to AGA, inserting a SacI restriction site, and a 1bp deletion has been introduced at codon 90 to destroy the second in-frame ATG and shift the succeeding reading frame.
Four copies of M{3xHisGU.ΔH3.2} rescue the formation of homozygous Df(2L)BSC104 clones in the wing disc, although they are severely growth impaired compared to their wild-type twin spots.
Two copies of M{3xHisGU.ΔH3.2} do not rescue the formation of homozygous Df(2L)BSC104 clones in the wing disc in a His3.3AKO His3.3BKO background.