ENU-induced T to C transition at base pair 15,808,058 (v38) on chromosome 16, or base pair 170,616 in the GenBank genomic region NC_000082 for Prkdc. The mutation corresponds to residue 9,970 in the mRNA sequence NM_011159 within exon 71 of 86 total exons. The mutation results in a leucine to serine substitution at position 3,316 (L3316S) in the DNA-PKCS protein. (J:272441)