ENU-induced A to G transition at base pair 44,697,630 (v38) on chromosome 4, or base pair 12,811 in the GenBank genomic region NC_000070. The mutation corresponds to residue 390 in the mRNA sequence NM_008782 within exon 2 of 10 total exons. The mutation results in an aspartic acid to glycine substitution at position 35 (D35G) in the canonical variant of the PAX5 protein.