ENU-induced T to A transversion at base pair 44,883,885 (v38) on chromosome 11, or base pair 265,786 in the GenBank genomic region NC_000077. The mutation corresponds to residue 787 in the mRNA sequence NM_001290709 within exon 8 of 16 total exons. The mutation results in an asparagine to lysine substitution at position 236 (N236K) in the EBF1 protein.