Functional Information from GO Data
| Chain | GOid | namespace | contents |
| A | 0019825 | molecular_function | oxygen binding |
| A | 0020037 | molecular_function | heme binding |
| B | 0019825 | molecular_function | oxygen binding |
| B | 0020037 | molecular_function | heme binding |
Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 11 |
| Details | BINDING SITE FOR RESIDUE HEM A 500 |
| Chain | Residue |
| A | HOH85 |
| A | TYR294 |
| A | LEU303 |
| A | MET238 |
| A | ILE239 |
| A | ARG250 |
| A | HIS254 |
| A | LEU257 |
| A | LYS285 |
| A | HIS286 |
| A | TRP288 |
| site_id | AC2 |
| Number of Residues | 6 |
| Details | BINDING SITE FOR RESIDUE PR A 1 |
| Chain | Residue |
| A | PR3 |
| A | HOH41 |
| A | GLU284 |
| A | GLU349 |
| B | GLU284 |
| B | GLU349 |
| site_id | AC3 |
| Number of Residues | 8 |
| Details | BINDING SITE FOR RESIDUE PR A 2 |
| Chain | Residue |
| A | HOH26 |
| A | HOH29 |
| A | HOH39 |
| A | HOH105 |
| A | NO3141 |
| A | PRO289 |
| A | ARG355 |
| B | ARG355 |
| site_id | AC4 |
| Number of Residues | 7 |
| Details | BINDING SITE FOR RESIDUE PR A 3 |
| Chain | Residue |
| A | PR1 |
| A | HOH41 |
| A | GLU281 |
| A | GLU284 |
| B | HOH49 |
| B | GLU281 |
| B | GLU284 |
| site_id | AC5 |
| Number of Residues | 12 |
| Details | BINDING SITE FOR RESIDUE NO3 A 141 |
| Chain | Residue |
| A | PR2 |
| A | HOH26 |
| A | HOH39 |
| A | HOH64 |
| A | HOH105 |
| A | ASP264 |
| A | ALA267 |
| A | ASN268 |
| A | PRO289 |
| A | THR290 |
| A | ARG291 |
| A | ARG355 |
| site_id | AC6 |
| Number of Residues | 6 |
| Details | BINDING SITE FOR RESIDUE NO3 A 142 |
| Chain | Residue |
| A | HOH61 |
| A | THR198 |
| A | PRO200 |
| A | GLN201 |
| A | THR326 |
| A | THR327 |
| site_id | AC7 |
| Number of Residues | 7 |
| Details | BINDING SITE FOR RESIDUE NO3 A 143 |
| Chain | Residue |
| A | HOH21 |
| A | ARG206 |
| A | ASN210 |
| A | ILE266 |
| A | ALA267 |
| A | PRO297 |
| A | HIS299 |
| site_id | AC8 |
| Number of Residues | 1 |
| Details | BINDING SITE FOR RESIDUE NO3 A 144 |
| site_id | AC9 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE NO3 A 147 |
| Chain | Residue |
| A | GLN201 |
| A | ARG329 |
| A | LYS333 |
| site_id | BC1 |
| Number of Residues | 5 |
| Details | BINDING SITE FOR RESIDUE NO3 A 148 |
| Chain | Residue |
| A | HOH99 |
| A | ARG226 |
| A | ARG236 |
| A | HIS248 |
| A | LEU251 |
| site_id | BC2 |
| Number of Residues | 12 |
| Details | BINDING SITE FOR RESIDUE HEM B 500 |
| Chain | Residue |
| B | HOH28 |
| B | ILE239 |
| B | ARG250 |
| B | LYS253 |
| B | HIS254 |
| B | LEU257 |
| B | LYS285 |
| B | HIS286 |
| B | TRP288 |
| B | TYR294 |
| B | PHE298 |
| B | LEU303 |
| site_id | BC3 |
| Number of Residues | 3 |
| Details | BINDING SITE FOR RESIDUE PR B 4 |
| Chain | Residue |
| B | HOH124 |
| B | NO3146 |
| B | PRO289 |
| site_id | BC4 |
| Number of Residues | 4 |
| Details | BINDING SITE FOR RESIDUE NO3 B 140 |
| Chain | Residue |
| B | HOH122 |
| B | GLN201 |
| B | ARG329 |
| B | LYS333 |
| site_id | BC5 |
| Number of Residues | 7 |
| Details | BINDING SITE FOR RESIDUE NO3 B 145 |
| Chain | Residue |
| B | HOH75 |
| B | ARG206 |
| B | ASN210 |
| B | ILE266 |
| B | ALA267 |
| B | PRO297 |
| B | HIS299 |
| site_id | BC6 |
| Number of Residues | 7 |
| Details | BINDING SITE FOR RESIDUE NO3 B 146 |
| Chain | Residue |
| B | PR4 |
| B | ASP264 |
| B | ALA267 |
| B | ASN268 |
| B | PRO289 |
| B | THR290 |
| B | ARG291 |
Functional Information from SwissProt/UniProt
| site_id | SWS_FT_FI1 |
| Number of Residues | 4 |
| Details | BINDING: axial binding residue |
| Chain | Residue | Details |
| A | HIS254 | |
| A | HIS286 | |
| B | HIS254 | |
| B | HIS286 | |
