Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 5 |
| Details | binding site for residue NI A 301 |
| Chain | Residue |
| A | ARG121 |
| A | ASP125 |
| A | SO4302 |
| B | GLY57 |
| B | HOH449 |
| site_id | AC2 |
| Number of Residues | 6 |
| Details | binding site for residue SO4 A 302 |
| Chain | Residue |
| B | ARG55 |
| B | GLY57 |
| A | ARG121 |
| A | ASP125 |
| A | NI301 |
| A | HOH458 |
| site_id | AC3 |
| Number of Residues | 8 |
| Details | binding site for residue ACT A 303 |
| Chain | Residue |
| A | VAL56 |
| A | TYR123 |
| A | HOH406 |
| A | HOH426 |
| A | HOH496 |
| B | GLY122 |
| B | TYR123 |
| B | HOH469 |
| site_id | AC4 |
| Number of Residues | 19 |
| Details | binding site for residue HEM A 304 |
| Chain | Residue |
| A | HIS63 |
| A | SER65 |
| A | LEU124 |
| A | THR128 |
| A | PHE131 |
| A | SER142 |
| A | ALA149 |
| A | THR150 |
| A | HOH490 |
| A | HOH510 |
| B | SER96 |
| B | PHE97 |
| B | SER99 |
| B | SER100 |
| B | PHE101 |
| B | TYR103 |
| B | LYS165 |
| B | FAD302 |
| B | HOH405 |
| site_id | AC5 |
| Number of Residues | 22 |
| Details | binding site for residue HEM B 301 |
| Chain | Residue |
| A | ARG14 |
| A | LEU15 |
| A | LYS18 |
| A | SER96 |
| A | PHE97 |
| A | SER99 |
| A | SER100 |
| A | PHE101 |
| A | TYR103 |
| A | LYS165 |
| A | HOH422 |
| A | HOH539 |
| B | HIS63 |
| B | SER65 |
| B | THR128 |
| B | PHE131 |
| B | SER142 |
| B | ALA149 |
| B | THR150 |
| B | FAD305 |
| B | HOH472 |
| B | HOH522 |
| site_id | AC6 |
| Number of Residues | 20 |
| Details | binding site for residue FAD B 302 |
| Chain | Residue |
| A | LEU35 |
| A | PRO50 |
| A | ILE51 |
| A | GLY52 |
| A | HIS63 |
| A | GLY64 |
| A | SER68 |
| A | PRO69 |
| A | TRP70 |
| A | HEM304 |
| A | HOH425 |
| B | GLN19 |
| B | TYR103 |
| B | SER105 |
| B | THR107 |
| B | PHE109 |
| B | SER163 |
| B | LYS165 |
| B | HOH405 |
| B | HOH511 |
| site_id | AC7 |
| Number of Residues | 2 |
| Details | binding site for residue NI B 303 |
| Chain | Residue |
| B | ASP125 |
| B | SO4304 |
| site_id | AC8 |
| Number of Residues | 6 |
| Details | binding site for residue SO4 B 304 |
| Chain | Residue |
| A | ARG55 |
| A | GLY57 |
| A | HOH447 |
| B | ARG121 |
| B | ASP125 |
| B | NI303 |
| site_id | AC9 |
| Number of Residues | 27 |
| Details | binding site for residue FAD B 305 |
| Chain | Residue |
| B | LEU35 |
| B | PHE49 |
| B | PRO50 |
| B | ILE51 |
| B | GLY52 |
| B | HIS63 |
| B | GLY64 |
| B | SER68 |
| B | PRO69 |
| B | TRP70 |
| B | HEM301 |
| B | HOH425 |
| B | HOH436 |
| B | HOH453 |
| B | HOH491 |
| B | HOH495 |
| A | SER9 |
| A | THR10 |
| A | ARG11 |
| A | VAL12 |
| A | THR13 |
| A | ARG14 |
| A | TYR103 |
| A | SER105 |
| A | THR107 |
| A | SER163 |
| A | LYS165 |
