| node1 | node2 | node1 accession | node2 accession | node1 annotation | node2 annotation | score |
| STM4276 | nrfA | STM4276 | STM4277 | Putative cytoplasmic protein. | Nitrite reductase periplasmic cytochrome c(552); Catalyzes the reduction of nitrite to ammonia, consuming six electrons in the process; Belongs to the cytochrome c-552 family. | 0.773 |
| STM4276 | nrfB | STM4276 | STM4278 | Putative cytoplasmic protein. | Formate-dependent nitrite reductase; A penta-haeme cytochrome c; similar to E. coli formate-dependent nitrite reductase; a penta-haeme cytochrome c (AAC77041.1); Blastp hit to AAC77041.1 (190 aa), 88% identity in aa 1 - 190. | 0.693 |
| STM4276 | nrfC | STM4276 | STM4279 | Putative cytoplasmic protein. | Fe-S centers; similar to E. coli formate-dependent nitrite reductase; Fe-S centers (AAC77042.1); Blastp hit to AAC77042.1 (223 aa), 91% identity in aa 1 - 223. | 0.693 |
| STM4276 | nrfD | STM4276 | STM4280 | Putative cytoplasmic protein. | Similar to E. coli formate-dependent nitrate reductase complex; transmembrane protein (AAC77043.1); Blastp hit to AAC77043.1 (318 aa), 85% identity in aa 1 - 318. | 0.693 |
| STM4276 | nrfE | STM4276 | STM4281 | Putative cytoplasmic protein. | Formate-dependent nitrite reductase; Possible subunit of a heme lyase. | 0.693 |
| STM4276 | nrfG | STM4276 | STM4282 | Putative cytoplasmic protein. | Involved in attachment of haem c to cytochrome c552; similar to E. coli part of formate-dependent nitrite reductase complex (AAD13459.1); Blastp hit to AAD13459.1 (198 aa), 71% identity in aa 6 - 196. | 0.693 |
| fdoI | napG | STM4035 | STM2258 | Similar to E. coli formate dehydrogenase, cytochrome B556 (FDO) subunit (AAD13454.1); Blastp hit to AAD13454.1 (211 aa), 96% identity in aa 1 - 211. | Ferredoxin-type protein; Electron transfer; similar to E. coli ferredoxin-type protein: electron transfer (AAC75265.1); Blastp hit to AAC75265.1 (231 aa), 94% identity in aa 1 - 231. | 0.464 |
| fdoI | nrfC | STM4035 | STM4279 | Similar to E. coli formate dehydrogenase, cytochrome B556 (FDO) subunit (AAD13454.1); Blastp hit to AAD13454.1 (211 aa), 96% identity in aa 1 - 211. | Fe-S centers; similar to E. coli formate-dependent nitrite reductase; Fe-S centers (AAC77042.1); Blastp hit to AAC77042.1 (223 aa), 91% identity in aa 1 - 223. | 0.760 |
| fdoI | nrfD | STM4035 | STM4280 | Similar to E. coli formate dehydrogenase, cytochrome B556 (FDO) subunit (AAD13454.1); Blastp hit to AAD13454.1 (211 aa), 96% identity in aa 1 - 211. | Similar to E. coli formate-dependent nitrate reductase complex; transmembrane protein (AAC77043.1); Blastp hit to AAC77043.1 (318 aa), 85% identity in aa 1 - 318. | 0.661 |
| napG | fdoI | STM2258 | STM4035 | Ferredoxin-type protein; Electron transfer; similar to E. coli ferredoxin-type protein: electron transfer (AAC75265.1); Blastp hit to AAC75265.1 (231 aa), 94% identity in aa 1 - 231. | Similar to E. coli formate dehydrogenase, cytochrome B556 (FDO) subunit (AAD13454.1); Blastp hit to AAD13454.1 (211 aa), 96% identity in aa 1 - 211. | 0.464 |
| napG | napH | STM2258 | STM2257 | Ferredoxin-type protein; Electron transfer; similar to E. coli ferredoxin-type protein: electron transfer (AAC75265.1); Blastp hit to AAC75265.1 (231 aa), 94% identity in aa 1 - 231. | Ferredoxin-type protein; Electron transfer; similar to E. coli ferredoxin-type protein: electron transfer (AAC75264.1); Blastp hit to AAC75264.1 (287 aa), 88% identity in aa 1 - 280. | 0.999 |
| napG | nrfA | STM2258 | STM4277 | Ferredoxin-type protein; Electron transfer; similar to E. coli ferredoxin-type protein: electron transfer (AAC75265.1); Blastp hit to AAC75265.1 (231 aa), 94% identity in aa 1 - 231. | Nitrite reductase periplasmic cytochrome c(552); Catalyzes the reduction of nitrite to ammonia, consuming six electrons in the process; Belongs to the cytochrome c-552 family. | 0.646 |
| napG | nrfB | STM2258 | STM4278 | Ferredoxin-type protein; Electron transfer; similar to E. coli ferredoxin-type protein: electron transfer (AAC75265.1); Blastp hit to AAC75265.1 (231 aa), 94% identity in aa 1 - 231. | Formate-dependent nitrite reductase; A penta-haeme cytochrome c; similar to E. coli formate-dependent nitrite reductase; a penta-haeme cytochrome c (AAC77041.1); Blastp hit to AAC77041.1 (190 aa), 88% identity in aa 1 - 190. | 0.529 |
| napG | nrfC | STM2258 | STM4279 | Ferredoxin-type protein; Electron transfer; similar to E. coli ferredoxin-type protein: electron transfer (AAC75265.1); Blastp hit to AAC75265.1 (231 aa), 94% identity in aa 1 - 231. | Fe-S centers; similar to E. coli formate-dependent nitrite reductase; Fe-S centers (AAC77042.1); Blastp hit to AAC77042.1 (223 aa), 91% identity in aa 1 - 223. | 0.490 |
| napG | nrfD | STM2258 | STM4280 | Ferredoxin-type protein; Electron transfer; similar to E. coli ferredoxin-type protein: electron transfer (AAC75265.1); Blastp hit to AAC75265.1 (231 aa), 94% identity in aa 1 - 231. | Similar to E. coli formate-dependent nitrate reductase complex; transmembrane protein (AAC77043.1); Blastp hit to AAC77043.1 (318 aa), 85% identity in aa 1 - 318. | 0.707 |
| napH | napG | STM2257 | STM2258 | Ferredoxin-type protein; Electron transfer; similar to E. coli ferredoxin-type protein: electron transfer (AAC75264.1); Blastp hit to AAC75264.1 (287 aa), 88% identity in aa 1 - 280. | Ferredoxin-type protein; Electron transfer; similar to E. coli ferredoxin-type protein: electron transfer (AAC75265.1); Blastp hit to AAC75265.1 (231 aa), 94% identity in aa 1 - 231. | 0.999 |
| napH | nrfA | STM2257 | STM4277 | Ferredoxin-type protein; Electron transfer; similar to E. coli ferredoxin-type protein: electron transfer (AAC75264.1); Blastp hit to AAC75264.1 (287 aa), 88% identity in aa 1 - 280. | Nitrite reductase periplasmic cytochrome c(552); Catalyzes the reduction of nitrite to ammonia, consuming six electrons in the process; Belongs to the cytochrome c-552 family. | 0.737 |
| napH | nrfB | STM2257 | STM4278 | Ferredoxin-type protein; Electron transfer; similar to E. coli ferredoxin-type protein: electron transfer (AAC75264.1); Blastp hit to AAC75264.1 (287 aa), 88% identity in aa 1 - 280. | Formate-dependent nitrite reductase; A penta-haeme cytochrome c; similar to E. coli formate-dependent nitrite reductase; a penta-haeme cytochrome c (AAC77041.1); Blastp hit to AAC77041.1 (190 aa), 88% identity in aa 1 - 190. | 0.675 |
| napH | nrfC | STM2257 | STM4279 | Ferredoxin-type protein; Electron transfer; similar to E. coli ferredoxin-type protein: electron transfer (AAC75264.1); Blastp hit to AAC75264.1 (287 aa), 88% identity in aa 1 - 280. | Fe-S centers; similar to E. coli formate-dependent nitrite reductase; Fe-S centers (AAC77042.1); Blastp hit to AAC77042.1 (223 aa), 91% identity in aa 1 - 223. | 0.529 |
| napH | nrfD | STM2257 | STM4280 | Ferredoxin-type protein; Electron transfer; similar to E. coli ferredoxin-type protein: electron transfer (AAC75264.1); Blastp hit to AAC75264.1 (287 aa), 88% identity in aa 1 - 280. | Similar to E. coli formate-dependent nitrate reductase complex; transmembrane protein (AAC77043.1); Blastp hit to AAC77043.1 (318 aa), 85% identity in aa 1 - 318. | 0.767 |