ENU-induced G to A transition at base pair 71,686,058 (v38) on chromosome 8, or base pair 9,676 in the GenBank genomic region NC_000074 encoding Jak3. The mutation corresponds to residue 3,109 in the mRNA sequence NM_010589 within exon 21 of 25 total exons. The mutation results in an alanine to threonine substitution at position 967 (A967T) in the JAK3 protein. (J:272398)