| node1 | node2 | node1 accession | node2 accession | node1 annotation | node2 annotation | score |
| Atu1013 | napA | Atu1013 | Atu4408 | Ferredoxin reductase. | 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. | 0.518 |
| Atu1013 | nasA | Atu1013 | Atu3900 | Ferredoxin reductase. | Nitrate reductase large subunit; Belongs to the prokaryotic molybdopterin-containing oxidoreductase family. NasA/NapA/NarB subfamily. | 0.955 |
| Atu1013 | nirD | Atu1013 | Atu3901 | Ferredoxin reductase. | Nitrite reductase small subunit. | 0.914 |
| cysJ | napA | Atu0146 | Atu4408 | Sulfite reductase (NADPH) flavoprotein alpha-component; Component of the sulfite reductase complex that catalyzes the 6-electron reduction of sulfite to sulfide. This is one of several activities required for the biosynthesis of L-cysteine from sulfate. The flavoprotein component catalyzes the electron flow from NADPH -> FAD -> FMN to the hemoprotein component. | 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. | 0.894 |
| cysJ | nasA | Atu0146 | Atu3900 | Sulfite reductase (NADPH) flavoprotein alpha-component; Component of the sulfite reductase complex that catalyzes the 6-electron reduction of sulfite to sulfide. This is one of several activities required for the biosynthesis of L-cysteine from sulfate. The flavoprotein component catalyzes the electron flow from NADPH -> FAD -> FMN to the hemoprotein component. | Nitrate reductase large subunit; Belongs to the prokaryotic molybdopterin-containing oxidoreductase family. NasA/NapA/NarB subfamily. | 0.931 |
| napA | Atu1013 | Atu4408 | Atu1013 | 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. | Ferredoxin reductase. | 0.518 |
| napA | cysJ | Atu4408 | Atu0146 | 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. | Sulfite reductase (NADPH) flavoprotein alpha-component; Component of the sulfite reductase complex that catalyzes the 6-electron reduction of sulfite to sulfide. This is one of several activities required for the biosynthesis of L-cysteine from sulfate. The flavoprotein component catalyzes the electron flow from NADPH -> FAD -> FMN to the hemoprotein component. | 0.894 |
| 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 | nirK | Atu4408 | Atu4382 | 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, copper-containing; Belongs to the multicopper oxidase family. | 0.946 |
| 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 | nirK | Atu4409 | Atu4382 | Periplasmic nitrate reductase small subunit; Electron transfer subunit of the periplasmic nitrate reductase complex NapAB; Belongs to the NapB family. | Nitrite reductase, copper-containing; Belongs to the multicopper oxidase family. | 0.953 |