Functional Information from GO Data
| Chain | GOid | namespace | contents |
| X | 0005576 | cellular_component | extracellular region |
| X | 0042311 | biological_process | vasodilation |
| X | 0046872 | molecular_function | metal ion binding |
| X | 0051381 | molecular_function | histamine binding |
| X | 0070026 | molecular_function | nitric oxide binding |
| X | 0097746 | biological_process | blood vessel diameter maintenance |
Functional Information from PDB Data
| site_id | AC1 |
| Number of Residues | 17 |
| Details | BINDING SITE FOR RESIDUE HEM X 201 |
| Chain | Residue |
| X | VAL24 |
| X | LYS96 |
| X | TYR104 |
| X | ILE120 |
| X | LEU132 |
| X | CIT202 |
| X | CIT202 |
| X | HOH456 |
| X | HOH528 |
| X | PHE27 |
| X | GLN33 |
| X | TYR38 |
| X | LEU55 |
| X | HIS57 |
| X | ASN68 |
| X | TYR85 |
| X | THR87 |
| site_id | AC2 |
| Number of Residues | 13 |
| Details | BINDING SITE FOR RESIDUE CIT X 202 |
| Chain | Residue |
| X | TYR85 |
| X | LYS96 |
| X | LYS96 |
| X | ASN102 |
| X | ASN102 |
| X | GLU124 |
| X | GLU124 |
| X | HEM201 |
| X | HEM201 |
| X | HOH459 |
| X | HOH507 |
| X | HOH507 |
| X | HOH508 |
Functional Information from SwissProt/UniProt
| Chain | Residue | Details |
| X | HIS57 | |
