ENU mutagenesis induced an A to T transversion at base pair 66,839,254 (v38) on chromosome 4, or base pair 11,444 in the GenBank genomic region NC_000070. The mutation corresponds to residue 564 in the mRNA sequence NM_021297 within exon 3 of 3 total exons. The mutation results in substitution of lysine (K) 95 to a premature stop codon (K95*) in the protein.