Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 27 |
| Details | binding site for residue HEM A 301 |
| Chain | Residue |
| A | PHE59 |
| A | THR157 |
| A | HOH448 |
| A | HOH449 |
| A | HOH453 |
| A | HOH476 |
| A | HOH558 |
| A | HOH572 |
| B | ARG21 |
| B | TYR22 |
| B | LEU25 |
| A | HIS70 |
| B | ALA102 |
| B | TYR103 |
| B | PHE105 |
| B | ASN106 |
| B | CYS107 |
| B | LYS170 |
| B | FAD403 |
| B | HOH550 |
| A | SER72 |
| A | LEU131 |
| A | PHE134 |
| A | VAL135 |
| A | LEU138 |
| A | TRP143 |
| A | ALA156 |
| site_id | AC2 |
| Number of Residues | 6 |
| Details | binding site for residue SO4 B 401 |
| Chain | Residue |
| A | LYS34 |
| A | ARG62 |
| A | GLY64 |
| A | HOH523 |
| B | ASP29 |
| B | GLN30 |
| site_id | AC3 |
| Number of Residues | 4 |
| Details | binding site for residue SO4 B 402 |
| Chain | Residue |
| A | GLU31 |
| B | LYS34 |
| B | ARG62 |
| B | GLY64 |
| site_id | AC4 |
| Number of Residues | 30 |
| Details | binding site for residue FAD B 403 |
| Chain | Residue |
| A | PHE54 |
| A | THR56 |
| A | PRO57 |
| A | THR58 |
| A | PHE59 |
| A | HIS70 |
| A | GLY71 |
| A | ARG76 |
| A | HEM301 |
| A | HOH427 |
| A | HOH477 |
| B | ARG16 |
| B | THR17 |
| B | HIS18 |
| B | VAL19 |
| B | LYS20 |
| B | ARG21 |
| B | CYS107 |
| B | PHE109 |
| B | SER111 |
| B | MET113 |
| B | SER168 |
| B | LYS170 |
| B | HOH528 |
| B | HOH532 |
| B | HOH556 |
| B | HOH579 |
| B | HOH586 |
| B | HOH607 |
| B | HOH623 |
| site_id | AC5 |
| Number of Residues | 32 |
| Details | binding site for residue FAD B 404 |
| Chain | Residue |
| A | ARG16 |
| A | THR17 |
| A | HIS18 |
| A | VAL19 |
| A | LYS20 |
| A | ARG21 |
| A | CYS107 |
| A | PHE109 |
| A | SER111 |
| A | MET113 |
| A | SER168 |
| A | LYS170 |
| A | HOH444 |
| A | HOH577 |
| B | LEU42 |
| B | PHE54 |
| B | THR56 |
| B | PRO57 |
| B | THR58 |
| B | PHE59 |
| B | HIS70 |
| B | GLY71 |
| B | ARG76 |
| B | HEM405 |
| B | HOH522 |
| B | HOH533 |
| B | HOH542 |
| B | HOH551 |
| B | HOH600 |
| B | HOH601 |
| B | HOH609 |
| B | HOH628 |
| site_id | AC6 |
| Number of Residues | 26 |
| Details | binding site for residue HEM B 405 |
| Chain | Residue |
| A | ARG21 |
| A | TYR22 |
| A | LEU25 |
| A | LEU96 |
| A | ALA102 |
| A | TYR103 |
| A | PHE105 |
| A | ASN106 |
| A | LYS170 |
| A | HOH456 |
| A | HOH577 |
| B | PHE59 |
| B | HIS70 |
| B | SER72 |
| B | LEU131 |
| B | PHE134 |
| B | VAL135 |
| B | LEU138 |
| B | TRP143 |
| B | ALA156 |
| B | THR157 |
| B | FAD404 |
| B | HOH514 |
| B | HOH534 |
| B | HOH535 |
| B | HOH552 |
