A duplicated sev enhancer and Hsp70 promoter drive expression of a mutated dos cDNA in which the predicted Pi3K21B protein binding site has been mutated (amino acid replacement Y631F).
wild-type
dosY631F.hs.2sev rescues dosP115
dosY631F.hs.2sev rescues dosR31
A single copy of dosY631F.hs rescues the lethality of homozygous dosR31 or dosP115.