Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 21 |
| Details | binding site for residue HEM A 501 |
| Chain | Residue |
| A | ASN233 |
| A | HIS326 |
| A | ALA330 |
| A | HIS331 |
| A | PRO332 |
| A | ARG342 |
| A | PHE363 |
| A | PHE374 |
| A | GLN378 |
| A | LEU386 |
| A | HOH613 |
| A | PHE237 |
| A | HOH645 |
| A | HOH701 |
| A | LYS238 |
| A | ASP239 |
| A | GLY240 |
| A | THR241 |
| A | ARG242 |
| A | MET280 |
| A | PHE297 |
| site_id | AC2 |
| Number of Residues | 4 |
| Details | binding site for residue IMD B 501 |
| Chain | Residue |
| B | ASP239 |
| B | ARG342 |
| B | LEU361 |
| B | HEM503 |
| site_id | AC3 |
| Number of Residues | 6 |
| Details | binding site for residue IMD B 502 |
| Chain | Residue |
| A | ILE198 |
| A | VAL211 |
| B | THR351 |
| B | GLY355 |
| B | LEU357 |
| B | HOH610 |
| site_id | AC4 |
| Number of Residues | 21 |
| Details | binding site for residue HEM B 503 |
| Chain | Residue |
| B | ASN233 |
| B | LEU235 |
| B | LYS238 |
| B | GLY240 |
| B | THR241 |
| B | ARG242 |
| B | ILE278 |
| B | MET280 |
| B | PHE297 |
| B | HIS326 |
| B | ALA330 |
| B | HIS331 |
| B | PRO332 |
| B | ARG342 |
| B | PHE363 |
| B | PHE374 |
| B | GLN378 |
| B | LEU386 |
| B | IMD501 |
| B | HOH651 |
| B | HOH652 |
