Functional Information from GO Data
| Chain | GOid | namespace | contents |
| A | 0016491 | molecular_function | oxidoreductase activity |
| A | 0020037 | molecular_function | heme binding |
| A | 0042128 | biological_process | nitrate assimilation |
| A | 0046872 | molecular_function | metal ion binding |
| A | 0048307 | molecular_function | ferredoxin-nitrite reductase activity |
| A | 0051536 | molecular_function | iron-sulfur cluster binding |
| A | 0051539 | molecular_function | 4 iron, 4 sulfur cluster binding |
Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 36 |
| Details | BINDING SITE FOR RESIDUE SRM A 601 |
| Chain | Residue |
| A | ARG98 |
| A | LYS224 |
| A | LYS226 |
| A | PHE264 |
| A | PHE265 |
| A | SER266 |
| A | ARG309 |
| A | GLN402 |
| A | CYS440 |
| A | THR441 |
| A | CYS446 |
| A | ARG109 |
| A | ASN483 |
| A | THR484 |
| A | CYS485 |
| A | GLN487 |
| A | SO3606 |
| A | HOH1004 |
| A | HOH1005 |
| A | HOH1022 |
| A | HOH1039 |
| A | HOH1040 |
| A | THR141 |
| A | HOH1060 |
| A | HOH1087 |
| A | HOH1127 |
| A | HOH1174 |
| A | HOH1251 |
| A | HOH1291 |
| A | HOH1378 |
| A | THR142 |
| A | ARG143 |
| A | ASN145 |
| A | GLN147 |
| A | ARG149 |
| A | ARG223 |
| site_id | AC2 |
| Number of Residues | 8 |
| Details | BINDING SITE FOR RESIDUE SF4 A 602 |
| Chain | Residue |
| A | CYS440 |
| A | CYS446 |
| A | ALA449 |
| A | THR479 |
| A | GLY480 |
| A | CYS481 |
| A | ASN483 |
| A | CYS485 |
| site_id | AC3 |
| Number of Residues | 6 |
| Details | BINDING SITE FOR RESIDUE K A 603 |
| Chain | Residue |
| A | ILE371 |
| A | GLU401 |
| A | GLN402 |
| A | ASN403 |
| A | HOH1013 |
| A | HOH1027 |
| site_id | AC4 |
| Number of Residues | 2 |
| Details | BINDING SITE FOR RESIDUE CL A 604 |
| Chain | Residue |
| A | MET175 |
| A | HOH1251 |
| site_id | AC5 |
| Number of Residues | 2 |
| Details | BINDING SITE FOR RESIDUE CL A 605 |
| Chain | Residue |
| A | ARG99 |
| A | LYS100 |
| site_id | AC6 |
| Number of Residues | 6 |
| Details | BINDING SITE FOR RESIDUE SO3 A 606 |
| Chain | Residue |
| A | ARG109 |
| A | ARG179 |
| A | LYS224 |
| A | LYS226 |
| A | SRM601 |
| A | HOH1022 |
Functional Information from PROSITE/UniProt
| site_id | PS00365 |
| Number of Residues | 17 |
| Details | NIR_SIR Nitrite and sulfite reductases iron-sulfur/siroheme-binding site. TGCpntCaqvqvaDIGF |
| Chain | Residue | Details |
| A | THR479-PHE495 | |
