peptide hormone glucagon A 29-amino acid peptide hormone consisting of His, Ser, Gln, Gly, Thr, Phe, Thr, Ser, Asp, Tyr, Ser, Lys, Tyr, Leu, Asp, Ser, Arg, Arg, Ala, Gln, Asp, Phe, Val, Gln, Trp, Leu, Met, Asn and Thr residues joined in sequence. His-Ser-Gln-Gly-Thr-Phe-Thr-Ser-Asp-Tyr-Ser-Lys-Tyr-Leu-Asp-Ser-Arg-Arg-Ala-Gln-Asp-Phe-Val-Gln-Trp-Leu-Met-Asn-Thr HSQGTFTSDYSKYLDSRRAQDFVQWLMNT CHEBI:5391 His-ser-glu(nh2)-gly-thr-phe-thr-ser-asp-tyr-ser-lys-tyr-leu-asp-ser-arg-arg-ala-glu(NH2)-asp-phe-val-glu(NH2)-trp-leu-met-asp(NH2)-thr Glucagone Glucagon