| node1 | node2 | node1 accession | node2 accession | node1 annotation | node2 annotation | score |
| STM1330 | ygbD | STM1330 | STM2841 | Putative DNA/RNA non-specific endonuclease. | Putative oxidoreductase; One of at least two accessory proteins for anaerobic nitric oxide (NO) reductase. Reduces the rubredoxin moiety of NO reductase. | 0.659 |
| fdhF | narG | STM4285 | STM1764 | Formate dehydrogenase; Similar to E. coli selenopolypeptide subunit of formate dehydrogenase H (AAD13462.1); Blastp hit to AAD13462.1 (715 aa), 97% identity in aa 1 - 714; Belongs to the prokaryotic molybdopterin-containing oxidoreductase 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. | 0.639 |
| fdhF | nirD | STM4285 | STM3475 | Formate dehydrogenase; Similar to E. coli selenopolypeptide subunit of formate dehydrogenase H (AAD13462.1); Blastp hit to AAD13462.1 (715 aa), 97% identity in aa 1 - 714; Belongs to the prokaryotic molybdopterin-containing oxidoreductase family. | Nitrite reductase small subunit; Required for activity of the reductase. | 0.548 |
| fdhF | norV | STM4285 | STM2840 | Formate dehydrogenase; Similar to E. coli selenopolypeptide subunit of formate dehydrogenase H (AAD13462.1); Blastp hit to AAD13462.1 (715 aa), 97% identity in aa 1 - 714; Belongs to the prokaryotic molybdopterin-containing oxidoreductase family. | Putative flavoprotein; Anaerobic nitric oxide reductase; uses NADH to detoxify nitric oxide (NO), protecting several 4Fe-4S NO-sensitive enzymes. Has at least 2 reductase partners, only one of which (NorW, flavorubredoxin reductase) has been identified. NO probably binds to the di-iron center; electrons enter from the NorW at rubredoxin and are transferred sequentially to the FMN center and the di-iron center. Also able to function as an aerobic oxygen reductase; In the N-terminal section; belongs to the zinc metallo- hydrolase group 3 family. | 0.491 |
| fdhF | nrfA | STM4285 | STM4277 | Formate dehydrogenase; Similar to E. coli selenopolypeptide subunit of formate dehydrogenase H (AAD13462.1); Blastp hit to AAD13462.1 (715 aa), 97% identity in aa 1 - 714; Belongs to the prokaryotic molybdopterin-containing oxidoreductase family. | 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. | 0.456 |
| fdhF | ygbD | STM4285 | STM2841 | Formate dehydrogenase; Similar to E. coli selenopolypeptide subunit of formate dehydrogenase H (AAD13462.1); Blastp hit to AAD13462.1 (715 aa), 97% identity in aa 1 - 714; Belongs to the prokaryotic molybdopterin-containing oxidoreductase family. | Putative oxidoreductase; One of at least two accessory proteins for anaerobic nitric oxide (NO) reductase. Reduces the rubredoxin moiety of NO reductase. | 0.928 |
| hmpA | narG | STM2556 | STM1764 | Dihydropteridine reductase 2; Is involved in NO detoxification in an aerobic process, termed nitric oxide dioxygenase (NOD) reaction that utilizes O(2) and NAD(P)H to convert NO to nitrate, which protects the bacterium from various noxious nitrogen compounds. Therefore, plays a central role in the inducible response to nitrosative stress. Belongs to the globin family. Two-domain flavohemoproteins subfamily. | 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. | 0.772 |
| hmpA | nirD | STM2556 | STM3475 | Dihydropteridine reductase 2; Is involved in NO detoxification in an aerobic process, termed nitric oxide dioxygenase (NOD) reaction that utilizes O(2) and NAD(P)H to convert NO to nitrate, which protects the bacterium from various noxious nitrogen compounds. Therefore, plays a central role in the inducible response to nitrosative stress. Belongs to the globin family. Two-domain flavohemoproteins subfamily. | Nitrite reductase small subunit; Required for activity of the reductase. | 0.502 |
| hmpA | norV | STM2556 | STM2840 | Dihydropteridine reductase 2; Is involved in NO detoxification in an aerobic process, termed nitric oxide dioxygenase (NOD) reaction that utilizes O(2) and NAD(P)H to convert NO to nitrate, which protects the bacterium from various noxious nitrogen compounds. Therefore, plays a central role in the inducible response to nitrosative stress. Belongs to the globin family. Two-domain flavohemoproteins subfamily. | Putative flavoprotein; Anaerobic nitric oxide reductase; uses NADH to detoxify nitric oxide (NO), protecting several 4Fe-4S NO-sensitive enzymes. Has at least 2 reductase partners, only one of which (NorW, flavorubredoxin reductase) has been identified. NO probably binds to the di-iron center; electrons enter from the NorW at rubredoxin and are transferred sequentially to the FMN center and the di-iron center. Also able to function as an aerobic oxygen reductase; In the N-terminal section; belongs to the zinc metallo- hydrolase group 3 family. | 0.972 |
| hmpA | nrfA | STM2556 | STM4277 | Dihydropteridine reductase 2; Is involved in NO detoxification in an aerobic process, termed nitric oxide dioxygenase (NOD) reaction that utilizes O(2) and NAD(P)H to convert NO to nitrate, which protects the bacterium from various noxious nitrogen compounds. Therefore, plays a central role in the inducible response to nitrosative stress. Belongs to the globin family. Two-domain flavohemoproteins subfamily. | 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. | 0.913 |
| hmpA | ygaA | STM2556 | STM2839 | Dihydropteridine reductase 2; Is involved in NO detoxification in an aerobic process, termed nitric oxide dioxygenase (NOD) reaction that utilizes O(2) and NAD(P)H to convert NO to nitrate, which protects the bacterium from various noxious nitrogen compounds. Therefore, plays a central role in the inducible response to nitrosative stress. Belongs to the globin family. Two-domain flavohemoproteins subfamily. | Putative EBP family regulator; Required for the expression of anaerobic nitric oxide (NO) reductase, acts as a transcriptional activator for at least the norVW operon. Activation also requires sigma-54. | 0.932 |
| hmpA | ygbD | STM2556 | STM2841 | Dihydropteridine reductase 2; Is involved in NO detoxification in an aerobic process, termed nitric oxide dioxygenase (NOD) reaction that utilizes O(2) and NAD(P)H to convert NO to nitrate, which protects the bacterium from various noxious nitrogen compounds. Therefore, plays a central role in the inducible response to nitrosative stress. Belongs to the globin family. Two-domain flavohemoproteins subfamily. | Putative oxidoreductase; One of at least two accessory proteins for anaerobic nitric oxide (NO) reductase. Reduces the rubredoxin moiety of NO reductase. | 0.858 |
| 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 | 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 | norV | STM2259 | STM2840 | 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. | Putative flavoprotein; Anaerobic nitric oxide reductase; uses NADH to detoxify nitric oxide (NO), protecting several 4Fe-4S NO-sensitive enzymes. Has at least 2 reductase partners, only one of which (NorW, flavorubredoxin reductase) has been identified. NO probably binds to the di-iron center; electrons enter from the NorW at rubredoxin and are transferred sequentially to the FMN center and the di-iron center. Also able to function as an aerobic oxygen reductase; In the N-terminal section; belongs to the zinc metallo- hydrolase group 3 family. | 0.435 |
| 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 |
| napA | ygbD | STM2259 | STM2841 | 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. | Putative oxidoreductase; One of at least two accessory proteins for anaerobic nitric oxide (NO) reductase. Reduces the rubredoxin moiety of NO reductase. | 0.966 |
| narG | fdhF | STM1764 | STM4285 | 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. | Formate dehydrogenase; Similar to E. coli selenopolypeptide subunit of formate dehydrogenase H (AAD13462.1); Blastp hit to AAD13462.1 (715 aa), 97% identity in aa 1 - 714; Belongs to the prokaryotic molybdopterin-containing oxidoreductase family. | 0.639 |
| narG | hmpA | STM1764 | STM2556 | 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. | Dihydropteridine reductase 2; Is involved in NO detoxification in an aerobic process, termed nitric oxide dioxygenase (NOD) reaction that utilizes O(2) and NAD(P)H to convert NO to nitrate, which protects the bacterium from various noxious nitrogen compounds. Therefore, plays a central role in the inducible response to nitrosative stress. Belongs to the globin family. Two-domain flavohemoproteins subfamily. | 0.772 |
| narG | napA | STM1764 | STM2259 | 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 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. | 0.993 |