ENU-induced T to C transition at base pair 97,373,124 (v38) on chromosome 11 corresponding to base pair 10,829 in the GenBank genomic region NC_000077 encoding Socs7. The mutation corresponds to residue 932 in the mRNA sequence NM_138657 within exon 2 of 10 total exons. The mutation results in a phenylalanine (F) to leucine (L) substitution at position 281 (F281L) in the protein.