This peptide is a major constituent of protein deposits identified in the Islets of Langerhans of patients with noninsulin-dependent diabetes mellitus.
H - Lys - Cys - Asn - Thr - Ala - Thr - Cys - Ala - Thr - Gln - Arg - Leu - Ala - Asn - Phe - Leu - Val - His - Ser - Ser - Asn - Asn - Phe - Gly - Ala - Ile - Leu - Ser - Ser - Thr - Asn - Val - Gly - Ser - Asn - Thr - Tyr - OH (Disulfide bridge: 2 - 7)