ENU-induced G to A transition at base pair 77,559,681 (v38) on chromosome 10, or base pair 29,354 in the GenBank genomic region NC_000076. The mutation corresponds to residue 1,730 in the mRNA sequence NM_008404 within exon 12 of 16 total exons. The mutation results in a valine (V) to isoleucine (I) substitution at position 539 (V539I) in the integrin 2 protein.