Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 21 |
| Details | binding site for residue HEM A 1401 |
| Chain | Residue |
| A | ASN245 |
| A | ARG358 |
| A | PRO359 |
| A | ARG369 |
| A | PHE390 |
| A | PHE401 |
| A | GLN405 |
| A | LEU414 |
| A | ILE418 |
| A | OXY1402 |
| A | HOH608 |
| A | GLN249 |
| A | HOH609 |
| A | HOH654 |
| A | VAL250 |
| A | GLY252 |
| A | THR253 |
| A | ARG254 |
| A | MET296 |
| A | HIS353 |
| A | THR357 |
| site_id | AC2 |
| Number of Residues | 4 |
| Details | binding site for residue OXY A 1402 |
| Chain | Residue |
| A | ASP251 |
| A | ARG369 |
| A | HEM1401 |
| A | HOH505 |
| site_id | AC3 |
| Number of Residues | 21 |
| Details | binding site for residue HEM B 1401 |
| Chain | Residue |
| B | ASN245 |
| B | GLN249 |
| B | VAL250 |
| B | GLY252 |
| B | THR253 |
| B | ARG254 |
| B | ILE294 |
| B | HIS353 |
| B | THR357 |
| B | ARG358 |
| B | PRO359 |
| B | ARG369 |
| B | LEU388 |
| B | PHE390 |
| B | PHE401 |
| B | GLN405 |
| B | LEU414 |
| B | OXY1402 |
| B | HOH557 |
| B | HOH583 |
| B | HOH626 |
| site_id | AC4 |
| Number of Residues | 4 |
| Details | binding site for residue OXY B 1402 |
| Chain | Residue |
| B | ASP251 |
| B | ARG369 |
| B | HEM1401 |
| B | HOH539 |
