ENU-induced G to T transversion at base pair 3,745,330 (v38) on chromosome 4, or base pair 67,210 in the GenBank genomic region NC_000070. The mutation corresponds to residue 546 in the mRNA sequence NM_001111096 (variant 1) within exon 5 of 13 total exons as well as residue 483 in the mRNA sequence NM_10747 (variant 2) within exon 5 or 13 total exons. The mutation results in a tryptophan (W) to cysteine (C) substitution at position 99 (W99C) in the protein. (J:236679)