醋酸内皮素-1

H-Cys-Ser-Cys-Ser-Ser-Leu-Met-Asp-Lys-Glu-Cys-Val-Tyr-Phe-Cys-His-Leu-Asp-Ile-Ile-Trp-OH
(Disulfide bonds between Cys1 and Cys15/Cys3 and Cys11)