| node1 | node2 | node1 accession | node2 accession | node1 annotation | node2 annotation | score |
| cysG | narG | STM3477 | STM1764 | Siroheme synthase; Multifunctional enzyme that catalyzes the SAM-dependent methylations of uroporphyrinogen III at position C-2 and C-7 to form precorrin-2 via precorrin-1. Then it catalyzes the NAD-dependent ring dehydrogenation of precorrin-2 to yield sirohydrochlorin. Finally, it catalyzes the ferrochelation of sirohydrochlorin to yield siroheme. In the N-terminal section; belongs to the precorrin-2 dehydrogenase / sirohydrochlorin ferrochelatase 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. | 0.553 |
| cysG | narH | STM3477 | STM1763 | Siroheme synthase; Multifunctional enzyme that catalyzes the SAM-dependent methylations of uroporphyrinogen III at position C-2 and C-7 to form precorrin-2 via precorrin-1. Then it catalyzes the NAD-dependent ring dehydrogenation of precorrin-2 to yield sirohydrochlorin. Finally, it catalyzes the ferrochelation of sirohydrochlorin to yield siroheme. In the N-terminal section; belongs to the precorrin-2 dehydrogenase / sirohydrochlorin ferrochelatase 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. | 0.694 |
| cysG | narK | STM3477 | STM1765 | Siroheme synthase; Multifunctional enzyme that catalyzes the SAM-dependent methylations of uroporphyrinogen III at position C-2 and C-7 to form precorrin-2 via precorrin-1. Then it catalyzes the NAD-dependent ring dehydrogenation of precorrin-2 to yield sirohydrochlorin. Finally, it catalyzes the ferrochelation of sirohydrochlorin to yield siroheme. In the N-terminal section; belongs to the precorrin-2 dehydrogenase / sirohydrochlorin ferrochelatase family. | Similar to E. coli nitrite extrusion protein (AAC74307.1); Blastp hit to AAC74307.1 (463 aa), 94% identity in aa 1 - 462. | 0.697 |
| cysG | narY | STM3477 | STM1578 | Siroheme synthase; Multifunctional enzyme that catalyzes the SAM-dependent methylations of uroporphyrinogen III at position C-2 and C-7 to form precorrin-2 via precorrin-1. Then it catalyzes the NAD-dependent ring dehydrogenation of precorrin-2 to yield sirohydrochlorin. Finally, it catalyzes the ferrochelation of sirohydrochlorin to yield siroheme. In the N-terminal section; belongs to the precorrin-2 dehydrogenase / sirohydrochlorin ferrochelatase 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. | 0.694 |
| cysG | nirB | STM3477 | STM3474 | Siroheme synthase; Multifunctional enzyme that catalyzes the SAM-dependent methylations of uroporphyrinogen III at position C-2 and C-7 to form precorrin-2 via precorrin-1. Then it catalyzes the NAD-dependent ring dehydrogenation of precorrin-2 to yield sirohydrochlorin. Finally, it catalyzes the ferrochelation of sirohydrochlorin to yield siroheme. In the N-terminal section; belongs to the precorrin-2 dehydrogenase / sirohydrochlorin ferrochelatase 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. | 0.954 |
| cysG | nirC | STM3477 | STM3476 | Siroheme synthase; Multifunctional enzyme that catalyzes the SAM-dependent methylations of uroporphyrinogen III at position C-2 and C-7 to form precorrin-2 via precorrin-1. Then it catalyzes the NAD-dependent ring dehydrogenation of precorrin-2 to yield sirohydrochlorin. Finally, it catalyzes the ferrochelation of sirohydrochlorin to yield siroheme. In the N-terminal section; belongs to the precorrin-2 dehydrogenase / sirohydrochlorin ferrochelatase family. | FNT family nitrite transport protein; Catalyzes nitrite uptake and nitrite export across the cytoplasmic membrane; Belongs to the FNT transporter (TC 2.A.44) family. | 0.990 |
| cysG | nirD | STM3477 | STM3475 | Siroheme synthase; Multifunctional enzyme that catalyzes the SAM-dependent methylations of uroporphyrinogen III at position C-2 and C-7 to form precorrin-2 via precorrin-1. Then it catalyzes the NAD-dependent ring dehydrogenation of precorrin-2 to yield sirohydrochlorin. Finally, it catalyzes the ferrochelation of sirohydrochlorin to yield siroheme. In the N-terminal section; belongs to the precorrin-2 dehydrogenase / sirohydrochlorin ferrochelatase family. | Nitrite reductase small subunit; Required for activity of the reductase. | 0.953 |
| hcp | narG | STM0937 | STM1764 | Hybrid cluster protein; Catalyzes the reduction of hydroxylamine to form NH(3) and H(2)O. | 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. | 0.672 |
| hcp | narK | STM0937 | STM1765 | Hybrid cluster protein; Catalyzes the reduction of hydroxylamine to form NH(3) and H(2)O. | Similar to E. coli nitrite extrusion protein (AAC74307.1); Blastp hit to AAC74307.1 (463 aa), 94% identity in aa 1 - 462. | 0.457 |
| hcp | nirB | STM0937 | STM3474 | Hybrid cluster protein; Catalyzes the reduction of hydroxylamine to form NH(3) and H(2)O. | 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. | 0.982 |
| hcp | nirD | STM0937 | STM3475 | Hybrid cluster protein; Catalyzes the reduction of hydroxylamine to form NH(3) and H(2)O. | Nitrite reductase small subunit; Required for activity of the reductase. | 0.955 |
| hcp | nrfA | STM0937 | STM4277 | Hybrid cluster protein; Catalyzes the reduction of hydroxylamine to form NH(3) and H(2)O. | 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. | 0.979 |
| napA | narG | STM2259 | STM1764 | Periplasmic large subunit nitrate reductase; Catalytic subunit of the periplasmic nitrate reductase complex NapAB. Receives electrons from NapB and catalyzes the reduction of nitrate to nitrite. | 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. | 0.993 |
| napA | narH | STM2259 | STM1763 | Periplasmic large subunit nitrate reductase; Catalytic subunit of the periplasmic nitrate reductase complex NapAB. Receives electrons from NapB and catalyzes the reduction of nitrate to nitrite. | Similar to E. coli nitrate reductase 1, beta subunit (AAC74309.1); Blastp hit to AAC74309.1 (512 aa), 92% identity in aa 1 - 511. | 0.938 |
| napA | narK | STM2259 | STM1765 | Periplasmic large subunit nitrate reductase; Catalytic subunit of the periplasmic nitrate reductase complex NapAB. Receives electrons from NapB and catalyzes the reduction of nitrate to nitrite. | Similar to E. coli nitrite extrusion protein (AAC74307.1); Blastp hit to AAC74307.1 (463 aa), 94% identity in aa 1 - 462. | 0.936 |
| napA | narY | STM2259 | STM1578 | Periplasmic large subunit nitrate reductase; Catalytic subunit of the periplasmic nitrate reductase complex NapAB. Receives electrons from NapB and catalyzes the reduction of nitrate to nitrite. | 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. | 0.915 |
| napA | nirB | STM2259 | STM3474 | Periplasmic large subunit nitrate reductase; Catalytic subunit of the periplasmic nitrate reductase complex NapAB. Receives electrons from NapB and catalyzes the reduction of nitrate to nitrite. | 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. | 0.986 |
| napA | nirC | STM2259 | STM3476 | Periplasmic large subunit nitrate reductase; Catalytic subunit of the periplasmic nitrate reductase complex NapAB. Receives electrons from NapB and catalyzes the reduction of nitrate to nitrite. | FNT family nitrite transport protein; Catalyzes nitrite uptake and nitrite export across the cytoplasmic membrane; Belongs to the FNT transporter (TC 2.A.44) family. | 0.437 |
| napA | nirD | STM2259 | STM3475 | Periplasmic large subunit nitrate reductase; 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; Required for activity of the reductase. | 0.957 |
| napA | nrfA | STM2259 | STM4277 | Periplasmic large subunit nitrate reductase; Catalytic subunit of the periplasmic nitrate reductase complex NapAB. Receives electrons from NapB and catalyzes the reduction of nitrate to nitrite. | 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. | 0.990 |