UASz sequences regulate expression of esc, mutated to carry a N174S amino acid replacement. This change is equivalent to a N194S change in the orthologous human EED gene, a variant that is associated with Cohen-Gibson syndrome.
lethal, with Scer\GAL4esc-CR00712-TG4.0
escN174S.UASz fails to rescue escCR00712-TG4.0/Df(2L)Exel6030