Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 20 |
| Details | BINDING SITE FOR RESIDUE HEC A 501 |
| Chain | Residue |
| A | ALA1 |
| A | GLN28 |
| A | CYS29 |
| A | CYS32 |
| A | HIS33 |
| A | LEU42 |
| A | LYS44 |
| A | CYS45 |
| A | HEC503 |
| A | HOH513 |
| A | HOH571 |
| A | GLU2 |
| A | HOH577 |
| A | ALA3 |
| A | PRO4 |
| A | LEU8 |
| A | MET10 |
| A | PHE19 |
| A | HIS21 |
| A | HIS24 |
| site_id | AC2 |
| Number of Residues | 15 |
| Details | BINDING SITE FOR RESIDUE HEC A 502 |
| Chain | Residue |
| A | CYS32 |
| A | HIS33 |
| A | HIS34 |
| A | ASN41 |
| A | ALA43 |
| A | LYS44 |
| A | CYS45 |
| A | CYS50 |
| A | HIS51 |
| A | VAL61 |
| A | LYS66 |
| A | ILE67 |
| A | VAL76 |
| A | ALA77 |
| A | HOH523 |
| site_id | AC3 |
| Number of Residues | 14 |
| Details | BINDING SITE FOR RESIDUE HEC A 503 |
| Chain | Residue |
| A | ASN20 |
| A | SER23 |
| A | HIS24 |
| A | TYR27 |
| A | CYS79 |
| A | CYS82 |
| A | HIS83 |
| A | LYS101 |
| A | LYS104 |
| A | HEC501 |
| A | HEC504 |
| A | HOH517 |
| A | HOH543 |
| A | HOH553 |
| site_id | AC4 |
| Number of Residues | 23 |
| Details | BINDING SITE FOR RESIDUE HEC A 504 |
| Chain | Residue |
| A | MET10 |
| A | GLU11 |
| A | ASN12 |
| A | THR13 |
| A | MET15 |
| A | PRO16 |
| A | VAL17 |
| A | PHE54 |
| A | TYR64 |
| A | TYR65 |
| A | ILE68 |
| A | HIS69 |
| A | CYS79 |
| A | MET80 |
| A | HIS83 |
| A | LEU97 |
| A | THR98 |
| A | GLY99 |
| A | CYS100 |
| A | CYS105 |
| A | HIS106 |
| A | HEC503 |
| A | HOH549 |
