| node1 | node2 | node1 accession | node2 accession | node1 annotation | node2 annotation | score |
| napB | narG | STM2256 | STM1764 | Periplasmic small subunit nitrate reductase of cytochrome C550; Electron transfer subunit of the periplasmic nitrate reductase complex NapAB; Belongs to the NapB family. | Similar to E. coli nitrate reductase 1, alpha subunit (AAC74308.1); Blastp hit to AAC74308.1 (1247 aa), 95% identity in aa 1 - 1247; Belongs to the prokaryotic molybdopterin-containing oxidoreductase family. | 0.940 |
| napB | narH | STM2256 | STM1763 | Periplasmic small subunit nitrate reductase of cytochrome C550; Electron transfer subunit of the periplasmic nitrate reductase complex NapAB; Belongs to the NapB family. | Similar to E. coli nitrate reductase 1, beta subunit (AAC74309.1); Blastp hit to AAC74309.1 (512 aa), 92% identity in aa 1 - 511. | 0.931 |
| napB | narI | STM2256 | STM1761 | Periplasmic small subunit nitrate reductase of cytochrome C550; Electron transfer subunit of the periplasmic nitrate reductase complex NapAB; Belongs to the NapB family. | Similar to E. coli nitrate reductase 1, cytochrome b(NR), gamma subunit (AAC74311.1); Blastp hit to AAC74311.1 (225 aa), 92% identity in aa 1 - 225. | 0.920 |
| napB | narU | STM2256 | STM1576 | Periplasmic small subunit nitrate reductase of cytochrome C550; Electron transfer subunit of the periplasmic nitrate reductase complex NapAB; Belongs to the NapB family. | MFS superfamily nitrate extrusion protein; Catalyzes nitrate uptake, nitrite uptake and nitrite export across the cytoplasmic membrane; Belongs to the major facilitator superfamily. Nitrate/nitrite porter (TC 2.A.1.8) family. | 0.907 |
| napB | narV | STM2256 | STM1580 | Periplasmic small subunit nitrate reductase of cytochrome C550; Electron transfer subunit of the periplasmic nitrate reductase complex NapAB; Belongs to the NapB family. | Similar to E. coli cryptic nitrate reductase 2, gamma subunit (AAC74547.1); Blastp hit to AAC74547.1 (226 aa), 96% identity in aa 1 - 226. | 0.937 |
| napB | narY | STM2256 | STM1578 | Periplasmic small subunit nitrate reductase of cytochrome C550; Electron transfer subunit of the periplasmic nitrate reductase complex NapAB; Belongs to the NapB family. | Similar to E. coli cryptic nitrate reductase 2, beta subunit (AAC74549.1); Blastp hit to AAC74549.1 (514 aa), 94% identity in aa 1 - 514. | 0.907 |
| napB | narZ | STM2256 | STM1577 | Periplasmic small subunit nitrate reductase of cytochrome C550; Electron transfer subunit of the periplasmic nitrate reductase complex NapAB; Belongs to the NapB family. | Similar to E. coli cryptic nitrate reductase 2, alpha subunit (AAC74550.1); Blastp hit to AAC74550.1 (1246 aa), 90% identity in aa 1 - 1246; Belongs to the prokaryotic molybdopterin-containing oxidoreductase family. | 0.922 |
| napB | nirB | STM2256 | STM3474 | Periplasmic small subunit nitrate reductase of cytochrome C550; Electron transfer subunit of the periplasmic nitrate reductase complex NapAB; Belongs to the NapB family. | Similar to E. coli nitrite reductase (NAD(P)H) subunit (AAC76390.1); Blastp hit to AAC76390.1 (847 aa), 95% identity in aa 1 - 847; Belongs to the nitrite and sulfite reductase 4Fe-4S domain family. | 0.938 |
| napB | nirD | STM2256 | STM3475 | Periplasmic small subunit nitrate reductase of cytochrome C550; Electron transfer subunit of the periplasmic nitrate reductase complex NapAB; Belongs to the NapB family. | Nitrite reductase small subunit; Required for activity of the reductase. | 0.938 |
| narG | napB | STM1764 | STM2256 | Similar to E. coli nitrate reductase 1, alpha subunit (AAC74308.1); Blastp hit to AAC74308.1 (1247 aa), 95% identity in aa 1 - 1247; Belongs to the prokaryotic molybdopterin-containing oxidoreductase family. | Periplasmic small subunit nitrate reductase of cytochrome C550; Electron transfer subunit of the periplasmic nitrate reductase complex NapAB; Belongs to the NapB family. | 0.940 |
| narG | narH | STM1764 | STM1763 | Similar to E. coli nitrate reductase 1, alpha subunit (AAC74308.1); Blastp hit to AAC74308.1 (1247 aa), 95% identity in aa 1 - 1247; Belongs to the prokaryotic molybdopterin-containing oxidoreductase family. | Similar to E. coli nitrate reductase 1, beta subunit (AAC74309.1); Blastp hit to AAC74309.1 (512 aa), 92% identity in aa 1 - 511. | 0.999 |
| narG | narI | STM1764 | STM1761 | Similar to E. coli nitrate reductase 1, alpha subunit (AAC74308.1); Blastp hit to AAC74308.1 (1247 aa), 95% identity in aa 1 - 1247; Belongs to the prokaryotic molybdopterin-containing oxidoreductase family. | Similar to E. coli nitrate reductase 1, cytochrome b(NR), gamma subunit (AAC74311.1); Blastp hit to AAC74311.1 (225 aa), 92% identity in aa 1 - 225. | 0.999 |
| narG | narU | STM1764 | STM1576 | Similar to E. coli nitrate reductase 1, alpha subunit (AAC74308.1); Blastp hit to AAC74308.1 (1247 aa), 95% identity in aa 1 - 1247; Belongs to the prokaryotic molybdopterin-containing oxidoreductase family. | MFS superfamily nitrate extrusion protein; Catalyzes nitrate uptake, nitrite uptake and nitrite export across the cytoplasmic membrane; Belongs to the major facilitator superfamily. Nitrate/nitrite porter (TC 2.A.1.8) family. | 0.981 |
| narG | narV | STM1764 | STM1580 | Similar to E. coli nitrate reductase 1, alpha subunit (AAC74308.1); Blastp hit to AAC74308.1 (1247 aa), 95% identity in aa 1 - 1247; Belongs to the prokaryotic molybdopterin-containing oxidoreductase family. | Similar to E. coli cryptic nitrate reductase 2, gamma subunit (AAC74547.1); Blastp hit to AAC74547.1 (226 aa), 96% identity in aa 1 - 226. | 0.997 |
| narG | narW | STM1764 | STM1579 | Similar to E. coli nitrate reductase 1, alpha subunit (AAC74308.1); Blastp hit to AAC74308.1 (1247 aa), 95% identity in aa 1 - 1247; Belongs to the prokaryotic molybdopterin-containing oxidoreductase family. | Assembly function; similar to E. coli cryptic nitrate reductase 2, delta subunit, assembly function (AAC74548.1); Blastp hit to AAC74548.1 (231 aa), 82% identity in aa 1 - 231. | 0.982 |
| narG | narY | STM1764 | STM1578 | Similar to E. coli nitrate reductase 1, alpha subunit (AAC74308.1); Blastp hit to AAC74308.1 (1247 aa), 95% identity in aa 1 - 1247; Belongs to the prokaryotic molybdopterin-containing oxidoreductase family. | Similar to E. coli cryptic nitrate reductase 2, beta subunit (AAC74549.1); Blastp hit to AAC74549.1 (514 aa), 94% identity in aa 1 - 514. | 0.997 |
| narG | narZ | STM1764 | STM1577 | Similar to E. coli nitrate reductase 1, alpha subunit (AAC74308.1); Blastp hit to AAC74308.1 (1247 aa), 95% identity in aa 1 - 1247; Belongs to the prokaryotic molybdopterin-containing oxidoreductase family. | Similar to E. coli cryptic nitrate reductase 2, alpha subunit (AAC74550.1); Blastp hit to AAC74550.1 (1246 aa), 90% identity in aa 1 - 1246; Belongs to the prokaryotic molybdopterin-containing oxidoreductase family. | 0.925 |
| narG | nirB | STM1764 | STM3474 | Similar to E. coli nitrate reductase 1, alpha subunit (AAC74308.1); Blastp hit to AAC74308.1 (1247 aa), 95% identity in aa 1 - 1247; Belongs to the prokaryotic molybdopterin-containing oxidoreductase family. | Similar to E. coli nitrite reductase (NAD(P)H) subunit (AAC76390.1); Blastp hit to AAC76390.1 (847 aa), 95% identity in aa 1 - 847; Belongs to the nitrite and sulfite reductase 4Fe-4S domain family. | 0.990 |
| narG | nirD | STM1764 | STM3475 | Similar to E. coli nitrate reductase 1, alpha subunit (AAC74308.1); Blastp hit to AAC74308.1 (1247 aa), 95% identity in aa 1 - 1247; Belongs to the prokaryotic molybdopterin-containing oxidoreductase family. | Nitrite reductase small subunit; Required for activity of the reductase. | 0.984 |
| narH | napB | STM1763 | STM2256 | Similar to E. coli nitrate reductase 1, beta subunit (AAC74309.1); Blastp hit to AAC74309.1 (512 aa), 92% identity in aa 1 - 511. | Periplasmic small subunit nitrate reductase of cytochrome C550; Electron transfer subunit of the periplasmic nitrate reductase complex NapAB; Belongs to the NapB family. | 0.931 |