ENU-induced G to A transition at base pair 87,980,223 (v38) on chromosome 17, or base pair 5,174 in the GenBank genomic region NC_000083. The mutation corresponds to residue 389 in the mRNA sequence NM_010830 within exon 2 of 10 total exons. The mutation results in substitution of tryptophan (W) 97 for a premature stop codon (W97*) in the protein.