ENU-induced T to A transversion at base pair 19,809,634 (v38) on chromosome 7, or base pair 13,134 in the GenBank genomic region NC_000073. The mutation corresponds to residue 984 in the mRNA sequence NM_033601 within exon 7 of 9 total exons. The mutation results in substitution of tyrosine 302 for a premature stop codon (Y302*) in the Bcl-3 protein. (J:264818)