GLY 1 CYS 2 CYS 3 SER 4 ASN 5 PRO 6 VAL 7 CYS 8 HIS 9 LEU 10 GLU 11 HIS 12 SER 13 ASN 14 LEU 15 CYS 16 GLY 17 GLY 18 ALA 19 ALA 20 GLY 21 GLY 22