Rat/mouse Amylin differs from the human version in 6 amino acids: H18R, F23L, A25P, I26V, S28P and S29P (first letter is the amino acid of the human sequence). Unlike the human IAPP (Amylin), rat Amylin does not form amyloid fibers.
H - Lys - Cys - Asn - Thr - Ala - Thr - Cys - Ala - Thr - Gln - Arg - Leu - Ala - Asn - Phe - Leu - Val - Arg - Ser - Ser - Asn - Asn - Leu - Gly - Pro - Val - Leu - Pro - Pro - Thr - Asn - Val - Gly - Ser - Asn - Thr - Tyr - NH2 (Disulfide bridge: 2 - 7)