ENU-induced C to A transversion at base pair 3,531,326 (v38) on chromosome 11, or base pair 8,329 in the GenBank genomic region NC_000077. The mutation corresponds to residue 912 in the mRNA sequence NM_013870 within exon 7 of 21 total exons. The mutation results in an alanine (A) to aspartic acid (D) substitution at position 223 (A223D) in all variants of the protein. (J:255298)