ENU-induced C to A transversion at base pair 15,752,829 (v38) on chromosome 16, or base pair 115,387 in the GenBank genomic region NC_000082. The mutation corresponds to residue 6,998 in the mRNA sequence NM_011159 within exon 52 of 86 total exons.The mutation results in substitution of tyrosine 2,325 for a premature stop codon (Y2325*) in the DNA-PKCS protein.