(A chain) Ala Ala Ala Thr Asn Pro Ala Arg Tyr Cys Cys Leu Ser Gly
Cys Thr Gln Gln Asp Leu Leu Thr Leu Cys Pro Tyr
(Disulfide bridge: 10-15)
(B chain) Leu Gly Pro Ala Pro Thr Pro Glu Met Arg Glu Lys Leu Cys
Gly His His Phe Val Arg Ala Leu Val Arg Val Cys Gly Gly Pro Arg
Trp Ser Thr Glu Ala (Disulfide bridge: A11-B14; A24-B26)