The domain at which the amino acid with single nucleotide polymorphism (SNP) is located will be affected by the SNP.
- Valine (Val) 42 Glycine (Gly): B chain domain
- Alanine (Ala) 74 Threonine (Thr): C peptide domain
- Arginine (Arg) 55 Proline (Pro): Dibasic site domain
- Tyrosine (Tyr) 103-stop: A chain domain