Functional Information from GO Data
| Chain | GOid | namespace | contents |
| A | 0005576 | cellular_component | extracellular region |
| A | 0042311 | biological_process | vasodilation |
| A | 0046872 | molecular_function | metal ion binding |
| A | 0051381 | molecular_function | histamine binding |
| A | 0070026 | molecular_function | nitric oxide binding |
| B | 0005576 | cellular_component | extracellular region |
| B | 0042311 | biological_process | vasodilation |
| B | 0046872 | molecular_function | metal ion binding |
| B | 0051381 | molecular_function | histamine binding |
| B | 0070026 | molecular_function | nitric oxide binding |
Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 7 |
| Details | BINDING SITE FOR RESIDUE PO4 A 301 |
| Chain | Residue |
| A | ASP114 |
| A | SER116 |
| A | SER117 |
| A | LYS149 |
| A | HOH424 |
| A | HOH427 |
| A | HOH497 |
| site_id | AC2 |
| Number of Residues | 7 |
| Details | BINDING SITE FOR RESIDUE PO4 B 302 |
| Chain | Residue |
| B | SER117 |
| B | LYS149 |
| B | HOH410 |
| B | HOH424 |
| B | HOH438 |
| B | ASP114 |
| B | SER116 |
| site_id | AC3 |
| Number of Residues | 17 |
| Details | BINDING SITE FOR RESIDUE HEM A 201 |
| Chain | Residue |
| A | TYR29 |
| A | LYS39 |
| A | TYR41 |
| A | LEU45 |
| A | LEU58 |
| A | ASP71 |
| A | PHE87 |
| A | LYS89 |
| A | TYR106 |
| A | LEU124 |
| A | LYS126 |
| A | HSM401 |
| A | HOH410 |
| A | HOH454 |
| A | HOH465 |
| A | HOH469 |
| A | HOH520 |
| site_id | AC4 |
| Number of Residues | 12 |
| Details | BINDING SITE FOR RESIDUE HEM B 201 |
| Chain | Residue |
| B | TYR29 |
| B | LYS39 |
| B | ASP71 |
| B | PHE87 |
| B | LYS89 |
| B | TYR106 |
| B | LEU124 |
| B | LYS126 |
| B | ALA136 |
| B | HSM402 |
| B | HOH417 |
| B | HOH474 |
| site_id | AC5 |
| Number of Residues | 7 |
| Details | BINDING SITE FOR RESIDUE HSM A 401 |
| Chain | Residue |
| A | ASP31 |
| A | GLU33 |
| A | LEU124 |
| A | LEU131 |
| A | HEM201 |
| A | HOH402 |
| A | HOH476 |
| site_id | AC6 |
| Number of Residues | 7 |
| Details | BINDING SITE FOR RESIDUE HSM B 402 |
| Chain | Residue |
| B | ASP31 |
| B | GLU33 |
| B | LEU124 |
| B | LEU131 |
| B | LEU134 |
| B | HEM201 |
| B | HOH440 |
Functional Information from SwissProt/UniProt
| site_id | SWS_FT_FI1 |
| Number of Residues | 2 |
| Details | BINDING: proximal binding residue |
| Chain | Residue | Details |
| A | CYS60 | |
| B | CYS60 | |
