Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 22 |
| Details | binding site for residue HEM A 201 |
| Chain | Residue |
| A | THR39 |
| A | HIS93 |
| A | HIS97 |
| A | ILE99 |
| A | TYR103 |
| A | LEU104 |
| A | HIS116 |
| A | PHE138 |
| A | HOH318 |
| A | HOH330 |
| A | HOH335 |
| A | LYS42 |
| A | HOH356 |
| A | HOH363 |
| A | HOH405 |
| A | PHE43 |
| A | LYS45 |
| A | HIS64 |
| A | THR67 |
| A | VAL68 |
| A | LEU89 |
| A | SER92 |
| site_id | AC2 |
| Number of Residues | 7 |
| Details | binding site for residue SO4 A 202 |
| Chain | Residue |
| A | LYS34 |
| A | THR51 |
| A | GLU52 |
| A | HOH327 |
| A | HOH346 |
| A | HOH385 |
| A | HOH409 |
| site_id | AC3 |
| Number of Residues | 8 |
| Details | binding site for residue SO4 A 203 |
| Chain | Residue |
| A | LYS45 |
| A | LYS63 |
| A | HIS64 |
| A | THR67 |
| A | HIS116 |
| A | HOH308 |
| A | HOH331 |
| A | HOH335 |
