| WP_013412025.1 | Caldicellulosiruptor owensensis | [FeFe] Group C1 | Firmicutes | Thermoanaerobacterales | Sensory | Labile | 2 | [FeFe]-centre, 2 x [4Fe4S] clusters, PAS domain | Histidine kinase |
| WP_013412025.1 | Caldicellulosiruptor owensensis | [FeFe] Group C1 | Firmicutes | Thermoanaerobacterales | Sensory | Labile | 2 | [FeFe]-centre, 2 x [4Fe4S] clusters, PAS domain | Histidine kinase |
| WP_013412032.1 | Caldicellulosiruptor owensensis | [FeFe] Group A3 | Firmicutes | Thermoanaerobacterales | Bifurcating | Labile | 4 | [FeFe]-centre, 3 x [4Fe4S] clusters, 1 x [2Fe2S] cluster | NADH dehydrogenase, thioredoxin, thioredoxin |
| WP_013413704.1 | Methanothermus fervidus | [NiFe] Group 4g | Euryarchaeota | Methanobacteriales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
| WP_013413799.1 | Methanothermus fervidus | [Fe] | Euryarchaeota | Methanobacteriales | Bidirectional | Tolerant | 1 | Fe ion | None |
| WP_013413806.1 | Methanothermus fervidus | [NiFe] Group 3c | Euryarchaeota | Methanobacteriales | Bifurcating | Sensitive | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Polyferredoxin, [FeS] protein |
| WP_013414105.1 | Methanothermus fervidus | [NiFe] Group 3a | Euryarchaeota | Methanobacteriales | Anaerobic Uptake | Sensitive | 3 | [NiFe]-centre, 3 x [4Fe4S] clusters | F420 reductase |
| WP_013418645.1 | Rhodomicrobium vannielii | [NiFe] Group 1d | Alphaproteobacteria | Rhizobiales | Aerobic Uptake | Tolerant | 3 | [NiFe]-centre, 1 x [4Fe3S] cluster, 1 x [3Fe4S] cluster, 1 x [4Fe4S] cluster | Cytochrome b |
| WP_013418661.1 | Rhodomicrobium vannielii | [NiFe] Group 2b | Alphaproteobacteria | Rhizobiales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_013423858.1 | Frankia sp. EuI1c | [NiFe] Group 1h | Actinobacteria | Actinomycetales | Aerobic Uptake | Tolerant | 3 | [NiFe]-centre, 3 x [4Fe4S] clusters | [FeS] protein |
| WP_013430365.1 | Caldicellulosiruptor kronotskyensis | [FeFe] Group C1 | Firmicutes | Thermoanaerobacterales | Sensory | Labile | 2 | [FeFe]-centre, 2 x [4Fe4S] clusters, PAS domain | Histidine kinase |
| WP_013430372.1 | Caldicellulosiruptor kronotskyensis | [FeFe] Group A3 | Firmicutes | Thermoanaerobacterales | Bifurcating | Labile | 4 | [FeFe]-centre, 3 x [4Fe4S] clusters, 1 x [2Fe2S] cluster | NADH dehydrogenase, thioredoxin, thioredoxin |
| WP_013432390.1 | Caldicellulosiruptor kristjanssonii | [NiFe] Group 4e | Firmicutes | Thermoanaerobacterales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
| WP_013450229.1 | Calditerrivibrio nitroreducens | [NiFe] Group 1f | Deferribacteres | Deferribacterales | Anaerobic Uptake | Unknown | 3 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | Cytochrome b |
| WP_013451671.1 | Calditerrivibrio nitroreducens | [NiFe] Group 3d | Deferribacteres | Deferribacterales | Bidirectional | Tolerant | 4 | [NiFe]-centre, 1 x [4Fe4S] clusters | Diaphorase, [FeS] protein |
| WP_013460908.1 | Sulfuricurvum kujiense | [NiFe] Group 1b | Epsilonproteobacteria | Campylobacterales | Anaerobic Uptake | Sensitive | 3 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | Cytochrome |
| WP_013460910.1 | Sulfuricurvum kujiense | [NiFe] Group 2d | Epsilonproteobacteria | Campylobacterales | Anaerobic Uptake | Unknown | 2 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | None |
| WP_013460913.1 | Sulfuricurvum kujiense | [NiFe] Group 1b | Epsilonproteobacteria | Campylobacterales | Anaerobic Uptake | Sensitive | 3 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | Cytochrome |
| WP_013460916.1 | Sulfuricurvum kujiense | [NiFe] Group 4e | Epsilonproteobacteria | Campylobacterales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
| WP_013466346.1 | Thermococcus barophilus | [NiFe] Group 3b | Euryarchaeota | Thermococcales | Bidirectional | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Diaphorase, [FeS] protein |
| WP_013466811.1 | Thermococcus barophilus | [NiFe] Group 3b | Euryarchaeota | Thermococcales | Bidirectional | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Diaphorase, [FeS] protein |
| WP_013467422.1 | Thermococcus barophilus | [NiFe] Group 4b | Euryarchaeota | Thermococcales | Evolving | Sensitive | 13 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, two [FeS] proteins, seven MRP antiporter subunits, etc. |
| WP_013467760.1 | Thermococcus barophilus | [NiFe] Group 4d | Euryarchaeota | Thermococcales | Evolving | Sensitive | 13 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, two [FeS] proteins, seven MRP antiporter subunits, etc. |
| WP_013469730.1 | Helicobacter felis | [NiFe] Group 1b | Epsilonproteobacteria | Campylobacterales | Anaerobic Uptake | Sensitive | 3 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | Cytochrome |
| WP_013484003.1 | Ethanoligenens harbinense | [FeFe] Group B | Firmicutes | Clostridiales | Evolving | Labile | 1 | [FeFe]-centre, 2 x [4Fe4S] clusters | None |
| WP_013484024.1 | Ethanoligenens harbinense | [FeFe] Group C3 | Firmicutes | Clostridiales | Sensory | Labile | 1 | [FeFe]-centre, 2 x [4Fe4S] clusters, PAS domain | Fusion with transcriptional activator |
| WP_013486154.1 | Ethanoligenens harbinense | [FeFe] Group A2 | Firmicutes | Clostridiales | Evolving | Labile | 2 | [FeFe]-centre, 3 x [4Fe4S] clusters, 1 x [2Fe2S] cluster | NADH-dependent glutamate synthase |
| WP_013486450.1 | Ethanoligenens harbinense | [FeFe] Group A3 | Firmicutes | Clostridiales | Bifurcating | Labile | 3 | [FeFe]-centre, 3 x [4Fe4S] clusters, 1 x [2Fe2S] cluster | NADH dehydrogenase, thioredoxin |
| WP_013486531.1 | Ethanoligenens harbinense | [FeFe] Group B | Firmicutes | Clostridiales | Evolving | Labile | 1 | [FeFe]-centre, 3 x [4Fe4S] clusters, 1 x [2Fe2S] cluster | None |
| WP_013499973.1 | Rhodopseudomonas palustris | [FeFe] Group A2 | Alphaproteobacteria | Rhizobiales | Evolving | Labile | 2 | [FeFe]-centre, 3 x [4Fe4S] clusters, 1 x [2Fe2S] cluster | NADH-dependent glutamate synthase |
| WP_013505701.1 | Desulfurispirillum indicum | [NiFe] Group 1b | Chrysiogenetes | Chrysiogenales | Anaerobic Uptake | Sensitive | 3 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | Cytochrome |
| WP_013506608.1 | Desulfurispirillum indicum | [NiFe] Group 3d | Chrysiogenetes | Chrysiogenales | Bidirectional | Tolerant | 4 | [NiFe]-centre, 1 x [4Fe4S] clusters | Diaphorase, [FeS] protein |
| WP_013511773.1 | Pantoea sp. At-9b | [NiFe] Group 4a | Gammaproteobacteria | Enterobacteriales | Evolving | Sensitive | 6 or 9 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, two [FeS] proteins, (three antiporter subunits) |
| WP_013513265.1 | Desulfovibrio aespoeensis | [FeFe] Group A1 | Deltaproteobacteria | Desulfovibrionales | Evolving | Labile | 2 | [FeFe]-centre, 2 x [4Fe4S] clusters | Small subunit |
| WP_013515288.1 | Desulfovibrio aespoeensis | [NiFe] Group 4e | Deltaproteobacteria | Desulfovibrionales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
| WP_013515487.1 | Desulfovibrio aespoeensis | [NiFe] Group 1b | Deltaproteobacteria | Desulfovibrionales | Anaerobic Uptake | Sensitive | 3 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | Cytochrome |
| WP_013537236.1 | Thermovibrio ammonificans | [NiFe] Group 4e | Aquificae | Desulfobacterales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
| WP_013537242.1 | Thermovibrio ammonificans | [NiFe] Group 3b | Aquificae | Desulfurobacteriales | Bidirectional | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Diaphorase, [FeS] protein |
| WP_013537869.1 | Thermovibrio ammonificans | [NiFe] Group 3a | Aquificae | Desulfurobacteriales | Anaerobic Uptake | Sensitive | 3 | [NiFe]-centre, 3 x [4Fe4S] clusters | F420 reductase |
| WP_013537874.1 | Thermovibrio ammonificans | [NiFe] Group 1c | Aquificae | Desulfurobacteriales | Anaerobic Uptake | Sensitive | 4 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | [FeS] protein, TM subunit |
| WP_013547705.1 | Bacteroides helcogenes | [FeFe] Group B | Bacteroidetes | Bacteroidales | Evolving | Labile | 1 | [FeFe]-centre, 3 x [4Fe4S] clusters, 1 x [2Fe2S] cluster | None |
| WP_013553042.1 | Nitratifractor salsuginis | [NiFe] Group 2d | Epsilonproteobacteria | Nautiliales | Anaerobic Uptake | Unknown | 2 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | None |
| WP_013553045.1 | Nitratifractor salsuginis | [NiFe] Group 1b | Epsilonproteobacteria | Campylobacterales | Anaerobic Uptake | Sensitive | 3 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | Cytochrome |
| WP_013559391.1 | Anaerolinea thermophila | [NiFe] Group 3d | Chloroflexi | Anaerolineales | Bidirectional | Tolerant | 4 | [NiFe]-centre, 1 x [4Fe4S] clusters | Diaphorase, [FeS] protein |
| WP_013559677.1 | Anaerolinea thermophila | [NiFe] Group 3d | Chloroflexi | Anaerolineales | Bidirectional | Tolerant | 4 | [NiFe]-centre, 1 x [4Fe4S] clusters | Diaphorase, [FeS] protein |
| WP_013560598.1 | Anaerolinea thermophila | [NiFe] Group 4g | Chloroflexi | Anaerolineales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
| WP_013561596.1 | Desulfurococcus mucosus | [NiFe] Group 4b | Crenarchaeota | Desulfurococcales | Evolving | Sensitive | 13 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, two [FeS] proteins, seven MRP antiporter subunits, etc. |
| WP_013570771.1 | Thermoanaerobacter brockii | [FeFe] Group C3 | Firmicutes | Thermoanaerobacterales | Sensory | Labile | 2 | [FeFe]-centre, 2 x [4Fe4S] clusters, PAS domain | Phosphatase |
| WP_013574483.1 | Rahnella sp. Y9602 | [NiFe] Group 4a | Gammaproteobacteria | Enterobacteriales | Evolving | Sensitive | 6 or 9 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, two [FeS] proteins, (three antiporter subunits) |
| WP_013607267.1 | Sphaerochaeta globosa | [FeFe] Group A3 | Spirochaetes | Spirochaetales | Bifurcating | Labile | 3 | [FeFe]-centre, 3 x [4Fe4S] clusters, 1 x [2Fe2S] cluster | NADH dehydrogenase, thioredoxin |