| node1 | node2 | node1 accession | node2 accession | node1 annotation | node2 annotation | score |
| Atu0159 | nrtB | Atu0159 | Atu3904 | ABC transporter, nucleotide binding/ATPase protein. | ABC transporter, membrane spanning protein (nitrate). | 0.846 |
| Atu0159 | nrtC-2 | Atu0159 | Atu3906 | ABC transporter, nucleotide binding/ATPase protein. | ABC transporter, nucleotide binding/ATPase protein (nitrate). | 0.651 |
| Atu0159 | ntrA | Atu0159 | Atu3905 | ABC transporter, nucleotide binding/ATPase protein. | ABC transporter, substrate binding protein (nitrate). | 0.579 |
| napA | napB | Atu4408 | Atu4409 | Periplasmic nitrate reductase large subunit; Catalytic subunit of the periplasmic nitrate reductase complex NapAB. Receives electrons from NapB and catalyzes the reduction of nitrate to nitrite. | Periplasmic nitrate reductase small subunit; Electron transfer subunit of the periplasmic nitrate reductase complex NapAB; Belongs to the NapB family. | 0.999 |
| napA | nasA | Atu4408 | Atu3900 | Periplasmic nitrate reductase large subunit; Catalytic subunit of the periplasmic nitrate reductase complex NapAB. Receives electrons from NapB and catalyzes the reduction of nitrate to nitrite. | Nitrate reductase large subunit; Belongs to the prokaryotic molybdopterin-containing oxidoreductase family. NasA/NapA/NarB subfamily. | 0.916 |
| napA | nirB | Atu4408 | Atu3902 | Periplasmic nitrate reductase large subunit; Catalytic subunit of the periplasmic nitrate reductase complex NapAB. Receives electrons from NapB and catalyzes the reduction of nitrate to nitrite. | Nitrite reductase large subunit; Belongs to the nitrite and sulfite reductase 4Fe-4S domain family. | 0.948 |
| napA | nirD | Atu4408 | Atu3901 | Periplasmic nitrate reductase large subunit; Catalytic subunit of the periplasmic nitrate reductase complex NapAB. Receives electrons from NapB and catalyzes the reduction of nitrate to nitrite. | Nitrite reductase small subunit. | 0.925 |
| napA | nrtB | Atu4408 | Atu3904 | Periplasmic nitrate reductase large subunit; Catalytic subunit of the periplasmic nitrate reductase complex NapAB. Receives electrons from NapB and catalyzes the reduction of nitrate to nitrite. | ABC transporter, membrane spanning protein (nitrate). | 0.900 |
| napA | nrtC | Atu4408 | Atu3903 | Periplasmic nitrate reductase large subunit; Catalytic subunit of the periplasmic nitrate reductase complex NapAB. Receives electrons from NapB and catalyzes the reduction of nitrate to nitrite. | ABC transporter, nucleotide binding/ATPase protein (nitrate). | 0.903 |
| napA | ntrA | Atu4408 | Atu3905 | Periplasmic nitrate reductase large subunit; Catalytic subunit of the periplasmic nitrate reductase complex NapAB. Receives electrons from NapB and catalyzes the reduction of nitrate to nitrite. | ABC transporter, substrate binding protein (nitrate). | 0.901 |
| napB | napA | Atu4409 | Atu4408 | Periplasmic nitrate reductase small subunit; Electron transfer subunit of the periplasmic nitrate reductase complex NapAB; Belongs to the NapB family. | Periplasmic nitrate reductase large subunit; Catalytic subunit of the periplasmic nitrate reductase complex NapAB. Receives electrons from NapB and catalyzes the reduction of nitrate to nitrite. | 0.999 |
| napB | nasA | Atu4409 | Atu3900 | Periplasmic nitrate reductase small subunit; Electron transfer subunit of the periplasmic nitrate reductase complex NapAB; Belongs to the NapB family. | Nitrate reductase large subunit; Belongs to the prokaryotic molybdopterin-containing oxidoreductase family. NasA/NapA/NarB subfamily. | 0.974 |
| napB | nirB | Atu4409 | Atu3902 | Periplasmic nitrate reductase small subunit; Electron transfer subunit of the periplasmic nitrate reductase complex NapAB; Belongs to the NapB family. | Nitrite reductase large subunit; Belongs to the nitrite and sulfite reductase 4Fe-4S domain family. | 0.911 |
| napB | nirD | Atu4409 | Atu3901 | Periplasmic nitrate reductase small subunit; Electron transfer subunit of the periplasmic nitrate reductase complex NapAB; Belongs to the NapB family. | Nitrite reductase small subunit. | 0.919 |
| napB | nrtB | Atu4409 | Atu3904 | Periplasmic nitrate reductase small subunit; Electron transfer subunit of the periplasmic nitrate reductase complex NapAB; Belongs to the NapB family. | ABC transporter, membrane spanning protein (nitrate). | 0.900 |
| napB | nrtC | Atu4409 | Atu3903 | Periplasmic nitrate reductase small subunit; Electron transfer subunit of the periplasmic nitrate reductase complex NapAB; Belongs to the NapB family. | ABC transporter, nucleotide binding/ATPase protein (nitrate). | 0.900 |
| napB | ntrA | Atu4409 | Atu3905 | Periplasmic nitrate reductase small subunit; Electron transfer subunit of the periplasmic nitrate reductase complex NapAB; Belongs to the NapB family. | ABC transporter, substrate binding protein (nitrate). | 0.900 |
| nasA | napA | Atu3900 | Atu4408 | Nitrate reductase large subunit; Belongs to the prokaryotic molybdopterin-containing oxidoreductase family. NasA/NapA/NarB subfamily. | Periplasmic nitrate reductase large subunit; Catalytic subunit of the periplasmic nitrate reductase complex NapAB. Receives electrons from NapB and catalyzes the reduction of nitrate to nitrite. | 0.916 |
| nasA | napB | Atu3900 | Atu4409 | Nitrate reductase large subunit; Belongs to the prokaryotic molybdopterin-containing oxidoreductase family. NasA/NapA/NarB subfamily. | Periplasmic nitrate reductase small subunit; Electron transfer subunit of the periplasmic nitrate reductase complex NapAB; Belongs to the NapB family. | 0.974 |
| nasA | nasT | Atu3900 | Atu3907 | Nitrate reductase large subunit; Belongs to the prokaryotic molybdopterin-containing oxidoreductase family. NasA/NapA/NarB subfamily. | Two component response regulator. | 0.864 |