ENU mutagenesis induced a T to C transition at base pair 69370785 (v37) on Chromosome 11 in the GenBank genomic region NC_000077 encoding Efnb3. The mutation corresponds to residue 332 in exon 2 of 5 total exons. The mutation results in a leucine (L) to proline (P) substitution at residue 111. (J:194586)