| P682 | biological process | signal transduction | Q828130 |
| | phosphorylation | Q242736 |
| | phosphorelay signal transduction system | Q21114947 |
| | peptidyl-histidine phosphorylation | Q21757752 |
| P681 | cell component | plasma membrane | Q29548 |
| | intracellular anatomical structure | Q3824358 |
| | integral component of membrane | Q14327652 |
| | membrane | Q14349455 |
| P702 | encoded by | nitrate/nitrite sensor protein NarQ ECIAI39_2606 | Q22224595 |
| P703 | found in taxon | Escherichia coli IAI39 | Q21102933 |
| P527 | has part(s) | HAMP domain | Q24775216 |
| | Signal transduction histidine kinase, subgroup 3, dimerisation and phosphoacceptor domain | Q24775393 |
| | NarX-like, N-terminal | Q24775419 |
| | Histidine kinase/HSP90-like ATPase domain | Q24780207 |
| | Histidine kinase domain | Q24782173 |
| P680 | molecular function | ATP binding | Q14817981 |
| | transferase activity | Q14840131 |
| | nucleotide binding | Q14860365 |
| | protein dimerization activity | Q14861864 |
| | kinase activity | Q14863082 |
| | phosphorelay sensor kinase activity | Q14865823 |
| | protein histidine kinase activity | Q21133640 |
| P361 | part of | membrane protein | Q423042 |
| | Signal transduction histidine kinase, nitrate/nitrite-sensing | Q24719981 |
| | Histidine kinase/HSP90-like ATPase superfamily | Q41797986 |
| | HAMP domain, protein family | Q83141758 |
| | NarX-like, N-terminal domain, protein family | Q83145527 |
| | Signal transduction histidine kinase, subgroup 3, dimerisation and phosphoacceptor domain, protein family | Q83145672 |
| | Histidine kinase domain, protein family | Q83162810 |
| | Histidine kinase/HSP90-like ATPase family | Q83164586 |