| Unit 1 | MET4 GLY5 SER6 GLN7 PHE8 TRP9 VAL10 THR11 SER12 GLN13 LYS14 THR15 GLU16 ALA17 SER18 GLU19 ARG20 CYS21 GLY22 LEU23 GLN24 GLY25 SER26 TYR27 ILE28 LEU29 ARG30 VAL31 GLU32 ALA33 GLU34 LYS35 LEU36 THR37 LEU38 LEU39 THR40 LEU41 GLY42 ALA43 GLN44 SER45 GLN46 ILE47 LEU48 GLU49 PRO50 LEU51 LEU52 PHE53 TRP54 PRO55 TYR56 THR57 LEU58 LEU59 ARG60 ARG61 TYR62 GLY63 ARG64 ASP65 LYS66 VAL67 MET68 PHE69 SER70 PHE71 GLU72 ALA73 GLY74 ARG75 ARG76 CYS77 PRO78 SER79 GLY80 PRO81 GLY82 THR83 PHE84 THR85 PHE86 GLN87 THR88 SER89 GLN90 GLY91 ASN92 ASP93 ILE94 PHE95 GLN96 ALA97 VAL98 GLU99 ALA100 ALA101 ILE102 GLN103 GLN104 GLN105 LYS106 ALA107 GLN108 |
| Unit 2 | GLY5 SER6 GLN7 PHE8 TRP9 VAL10 THR11 SER12 GLN13 LYS14 THR15 GLU16 ALA17 SER18 GLU19 ARG20 CYS21 GLY22 LEU23 GLN24 GLY25 SER26 TYR27 ILE28 LEU29 ARG30 VAL31 GLU32 ALA33 GLU34 LYS35 LEU36 THR37 LEU38 LEU39 THR40 LEU41 GLY42 ALA43 GLN44 SER45 GLN46 ILE47 LEU48 GLU49 PRO50 LEU51 LEU52 PHE53 TRP54 PRO55 TYR56 THR57 LEU58 LEU59 ARG60 ARG61 TYR62 GLY63 ARG64 ASP65 LYS66 VAL67 MET68 PHE69 SER70 PHE71 GLU72 ALA73 GLY74 ARG75 ARG76 CYS77 PRO78 SER79 GLY80 PRO81 GLY82 THR83 PHE84 THR85 PHE86 GLN87 THR88 SER89 GLN90 GLY91 ASN92 ASP93 ILE94 PHE95 GLN96 ALA97 VAL98 GLU99 ALA100 ALA101 ILE102 GLN103 GLN104 GLN105 LYS106 ALA107 |
| Unit 3 | THR2 TRP3 ILE4 GLU5 ASN6 LYS7 LEU8 PTR9 GLY10 MET11 |
| Unit 4 | THR2 TRP3 ILE4 GLU5 ASN6 LYS7 LEU8 PTR9 |