LEU 50 HIS 51 ARG+ 52 CYS- 53 LEU 54 ALA 55 CYSZ 56 ALA 57 ARG+ 58 TYR 59 PHE 60 ILE 61 ASP- 62 SER 63 THR 64 ASN 65 LEU 66 LYS+ 67 THR 68 HIS 69 PHE 70 ARG+ 71 SER 72 LYS+ 73 ASP- 74 HIS 75 LYS+ 76 LYS+ 77 ARG+ 78 LEU 79 LYS+ 80