Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 20 |
| Details | binding site for residue HEM A 501 |
| Chain | Residue |
| A | TYR38 |
| A | PHE206 |
| A | ARG224 |
| A | ASN226 |
| A | TRP227 |
| A | PHE281 |
| A | TYR317 |
| A | LYS318 |
| A | DMN502 |
| A | NO503 |
| A | HOH625 |
| A | SER39 |
| A | HOH657 |
| A | LEU160 |
| A | TRP180 |
| A | PHE190 |
| A | TRP193 |
| A | HIS194 |
| A | VAL197 |
| A | VAL205 |
| site_id | AC2 |
| Number of Residues | 4 |
| Details | binding site for residue DMN A 502 |
| Chain | Residue |
| A | GLU266 |
| A | GLN268 |
| A | HEM501 |
| A | NO503 |
| site_id | AC3 |
| Number of Residues | 4 |
| Details | binding site for residue NO A 503 |
| Chain | Residue |
| A | ARG224 |
| A | GLN268 |
| A | HEM501 |
| A | DMN502 |
| site_id | AC4 |
| Number of Residues | 4 |
| Details | binding site for residue PEG A 504 |
| Chain | Residue |
| A | MET37 |
| A | SER39 |
| A | NA505 |
| A | NA505 |
| site_id | AC5 |
| Number of Residues | 2 |
| Details | binding site for residue NA A 505 |
| Chain | Residue |
| A | PEG504 |
| A | PEG504 |
