ENU-induced T to A transversion at base pair 142,454,484 (v38) on chromosome 6, or base pair 18,647 in the GenBank genomic region NC_000072 encoding Gys2. The mutation corresponds to residue 1,308 in the mRNA sequence NM_145572 within exon 7 of 17 total exons. The mutation results in a phenylalanine (F) to isoleucine (I) substitution at residue 334 (F334I) in the GYS2 protein. (J:265257)