Amino acid replacement: T173I.
Nucleotide substitution: C582T.
C26029135T
C582T
T173I | E(spl)m5-HLH-PA
T173A
E(spl)m5-HLHT173I/Df(3R)BSC751 mutant embryos do not display a significant difference in the number of Ap neurons, as compared with controls.