氨基酸序列 Asn-Ser-Lys-Met-Ala-His-S?er-Ser-Ser-Cys-Phe-Gly-Gl?n-Lys-Ile-Asp-Arg-Ile-Gly?-Ala-Val-Ser-Arg-Leu-Gly-?Cys-Asp-Gly-Leu-Arg-Leu-P?he