Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 20 |
| Details | BINDING SITE FOR RESIDUE HEM A 140 |
| Chain | Residue |
| A | ARG16 |
| A | ARG81 |
| A | HIS82 |
| A | TYR85 |
| A | VAL87 |
| A | HIS91 |
| A | TYR92 |
| A | VAL95 |
| A | TYR123 |
| A | MET130 |
| A | OXY141 |
| A | LEU42 |
| A | HOH167 |
| A | PHE43 |
| A | GLN44 |
| A | ASN45 |
| A | GLN50 |
| A | LYS53 |
| A | VAL57 |
| A | LEU78 |
| site_id | AC2 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE OXY A 141 |
| Chain | Residue |
| A | TYR29 |
| A | GLN50 |
| A | HEM140 |
| site_id | AC3 |
| Number of Residues | 20 |
| Details | BINDING SITE FOR RESIDUE HEM B 140 |
| Chain | Residue |
| B | VAL39 |
| B | LEU42 |
| B | PHE43 |
| B | GLN44 |
| B | ASN45 |
| B | GLN50 |
| B | LYS53 |
| B | LEU54 |
| B | VAL57 |
| B | LEU78 |
| B | ARG81 |
| B | HIS82 |
| B | TYR85 |
| B | VAL87 |
| B | HIS91 |
| B | VAL95 |
| B | TYR123 |
| B | MET130 |
| B | OXY141 |
| B | HOH195 |
| site_id | AC4 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE OXY B 141 |
| Chain | Residue |
| B | TYR29 |
| B | GLN50 |
| B | HEM140 |
| site_id | AC5 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE SO4 B 142 |
| Chain | Residue |
| B | ASP89 |
| B | TYR92 |
| B | ALA127 |
| B | THR131 |
| B | HOH187 |
| site_id | AC6 |
| Number of Residues | 2 |
| Details | BINDING SITE FOR RESIDUE SO4 B 143 |
| Chain | Residue |
| B | GLY108 |
| B | GLN109 |
| site_id | AC7 |
| Number of Residues | 17 |
| Details | BINDING SITE FOR RESIDUE HEM C 140 |
| Chain | Residue |
| C | VAL39 |
| C | LEU42 |
| C | PHE43 |
| C | GLN44 |
| C | ASN45 |
| C | GLN50 |
| C | LYS53 |
| C | VAL57 |
| C | LEU78 |
| C | ARG81 |
| C | HIS82 |
| C | TYR85 |
| C | VAL87 |
| C | HIS91 |
| C | VAL95 |
| C | TYR123 |
| C | OXY141 |
| site_id | AC8 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE OXY C 141 |
| Chain | Residue |
| C | TYR29 |
| C | GLN50 |
| C | HEM140 |
| site_id | AC9 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE SO4 C 142 |
| Chain | Residue |
| B | ARG16 |
| C | VAL88 |
| C | ASP89 |
| C | HOH169 |
