Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 17 |
| Details | binding site for residue HEM A 401 |
| Chain | Residue |
| A | MET179 |
| A | LYS249 |
| A | LEU257 |
| A | PRO272 |
| A | LEU274 |
| A | HOH519 |
| A | HOH547 |
| A | HOH550 |
| A | HOH580 |
| A | PHE212 |
| A | ILE222 |
| A | PHE225 |
| A | HIS226 |
| A | LYS227 |
| A | HIS231 |
| A | GLN232 |
| A | SER246 |
| site_id | AC2 |
| Number of Residues | 18 |
| Details | binding site for residue HEM B 401 |
| Chain | Residue |
| B | MET179 |
| B | ILE222 |
| B | PHE225 |
| B | HIS226 |
| B | LYS227 |
| B | HIS231 |
| B | GLN232 |
| B | SER246 |
| B | ILE248 |
| B | LYS249 |
| B | LEU257 |
| B | PRO272 |
| B | LEU274 |
| B | HOH523 |
| B | HOH537 |
| B | HOH544 |
| B | HOH571 |
| B | HOH583 |
| site_id | AC3 |
| Number of Residues | 15 |
| Details | binding site for residue HEM C 401 |
| Chain | Residue |
| C | MET179 |
| C | PHE212 |
| C | ILE222 |
| C | PHE225 |
| C | HIS226 |
| C | LYS227 |
| C | HIS231 |
| C | GLN232 |
| C | PHE244 |
| C | SER246 |
| C | ILE248 |
| C | LEU257 |
| C | PRO272 |
| C | HOH501 |
| C | HOH562 |
