ENU-induced T to C transition at base pair 56,295,460 (v38) on chromosome 7, or base pair 55,868 in the GenBank genomic region NC_000073 encoding Oca2. The mutation corresponds to residue 945 in the NM_021879 mRNA sequence in exon 8 of 24 total exons. The mutation results in a valine to alanine substitution at residue 272 in the OCA2 protein. (J:264643)