氨基酸序列 Ile-Lys-Pro-Glu-Ala-Pro-G?ly-Glu-Asp-Ala-Ser-Pro-Gl?u-Glu-Leu-Asn-Arg-Tyr-Tyr?-Ala-Ser-Leu-Arg-His-Tyr-?Leu-Asn-Leu-Val-Thr-Arg-G?ln-Arg-Tyr-NH2