An ENU-induced A to G transition at base pair 79163319 (v38) on chromosome 15, or base pair 1172 in the GenBank genomic region NC_000081 encoding Sox10. The mutation corresponds to residue 685 in the NM_011437.1 mRNA sequence in exon 2 of 4 total exons. The mutation results in a glutamic acid (E) to glycine (G) substitution at residue 133. (J:200817)