| WP_011878132.1 | Desulfotomaculum reducens | [FeFe] Group B | Firmicutes | Clostridiales | Evolving | Labile | 1 | [FeFe]-centre, 3 x [4Fe4S] clusters, 1 x [2Fe2S] cluster | None |
| WP_011878613.1 | Desulfotomaculum reducens | [FeFe] Group C3 | Firmicutes | Clostridiales | Sensory | Labile | 2 | [FeFe]-centre, 2 x [4Fe4S] clusters, PAS domain | Histidine kinase |
| WP_011879575.1 | Desulfotomaculum reducens | [FeFe] Group A3 | Firmicutes | Clostridiales | Bifurcating | Labile | 3 | [FeFe]-centre, 3 x [4Fe4S] clusters, 1 x [2Fe2S] cluster | NADH dehydrogenase, thioredoxin |
| WP_011880080.1 | Burkholderia vietnamiensis | [NiFe] Group 2b | Betaproteobacteria | Burkholderiales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_011900768.1 | Pyrobaculum arsenaticum | [NiFe] Group 1g | Crenarchaeota | Thermoproteales | Anaerobic Uptake | Unknown | 4 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | Cytochrome b, [FeS] protein |
| WP_011917066.1 | Caldicellulosiruptor saccharolyticus | [NiFe] Group 4e | Firmicutes | Thermoanaerobacterales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
| WP_011928108.1 | Pelotomaculum thermopropionicum | [FeFe] Group C3 | Firmicutes | Clostridiales | Sensory | Labile | 2 | [FeFe]-centre, 2 x [4Fe4S] clusters, PAS domain | Phosphatase |
| WP_011937483.1 | Geobacter uraniireducens | [NiFe] Group 1f | Deltaproteobacteria | Desulfuromonadales | Anaerobic Uptake | Unknown | 3 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | Cytochrome b |
| WP_011937735.1 | Geobacter uraniireducens | [NiFe] Group 4e | Deltaproteobacteria | Desulfuromonadales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
| WP_011938049.1 | Geobacter uraniireducens | [NiFe] Group 3b | Deltaproteobacteria | Desulfuromonadales | Bidirectional | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Diaphorase, [FeS] protein |
| WP_011938839.1 | Geobacter uraniireducens | [NiFe] Group 1c | Deltaproteobacteria | Desulfuromonadales | Anaerobic Uptake | Sensitive | 4 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | [FeS] protein, TM subunit |
| WP_011940950.1 | Geobacter uraniireducens | [FeFe] Group C3 | Deltaproteobacteria | Desulfuromonadales | Sensory | Labile | 1 | [FeFe]-centre, 2 x [4Fe4S] clusters, PAS domain | Fusion with transcriptional activator |
| WP_011943326.1 | Thermotoga petrophila | [FeFe] Group A1 | Thermotogae | Thermotogales | Evolving | Labile | 1 | [FeFe]-centre, 3 x [4Fe4S] clusters, 1 x [2Fe2S] cluster | None |
| WP_011957045.1 | Roseiflexus sp. RS-1 | [NiFe] Group 1f | Chloroflexi | Chloroflexales | Anaerobic Uptake | Unknown | 3 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | Cytochrome b |
| WP_011958239.1 | Roseiflexus sp. RS-1 | [NiFe] Group 3d | Chloroflexi | Chloroflexales | Bidirectional | Tolerant | 4 | [NiFe]-centre, 1 x [4Fe4S] clusters | Diaphorase, [FeS] protein |
| WP_011964716.1 | Bacteroides vulgatus | [FeFe] Group B | Bacteroidetes | Bacteroidales | Evolving | Labile | 1 | [FeFe]-centre, 3 x [4Fe4S] clusters, 1 x [2Fe2S] cluster | None |
| WP_011971774.1 | Alkaliphilus metalliredigens | [FeFe] Group A3 | Firmicutes | Clostridiales | Bifurcating | Labile | 3 | [FeFe]-centre, 3 x [4Fe4S] clusters, 1 x [2Fe2S] cluster | NADH dehydrogenase, thioredoxin |
| WP_011971888.1 | Methanococcus vannielii | [NiFe] Group 3c | Euryarchaeota | Methanococcales | Bifurcating | Sensitive | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Polyferredoxin, [FeS] protein |
| WP_011971891.1 | Methanococcus vannielii | [NiFe] Group 3a | Euryarchaeota | Methanococcales | Anaerobic Uptake | Sensitive | 3 | [NiFe]-centre, 3 x [4Fe4S] clusters | F420 reductase |
| WP_011972283.1 | Methanococcus vannielii | [NiFe] Group 4i | Euryarchaeota | Methanococcales | Evolving | Sensitive | 16 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoH, NuoL, polyferredoxin, nine TM proteins, two hypotheticals |
| WP_011972500.1 | Methanococcus vannielii | [NiFe] Group 3a | Euryarchaeota | Methanococcales | Anaerobic Uptake | Sensitive | 3 | [NiFe]-centre, 3 x [4Fe4S] clusters | F420 reductase |
| WP_011972581.1 | Methanococcus vannielii | [NiFe] Group 4h | Euryarchaeota | Methanococcales | Evolving | Sensitive | 20 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoH, NuoL, Two polyferredoxins, eleven TM proteins, three hypotheticals |
| WP_011972821.1 | Methanococcus aeolicus | [NiFe] Group 3c | Euryarchaeota | Methanococcales | Bifurcating | Sensitive | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Polyferredoxin, [FeS] protein |
| WP_011973026.1 | Methanococcus aeolicus | [NiFe] Group 4i | Euryarchaeota | Methanococcales | Evolving | Sensitive | 16 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoH, NuoL, polyferredoxin, nine TM proteins, two hypotheticals |
| WP_011973090.1 | Methanococcus aeolicus | [NiFe] Group 4h | Euryarchaeota | Methanococcales | Evolving | Sensitive | 20 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoH, NuoL, Two polyferredoxins, eleven TM proteins, three hypotheticals |
| WP_011973735.1 | Methanococcus aeolicus | [Fe] | Euryarchaeota | Methanococcales | Bidirectional | Tolerant | 1 | Fe ion | None |
| WP_011973755.1 | Methanococcus aeolicus | [NiFe] Group 3a | Euryarchaeota | Methanococcales | Anaerobic Uptake | Sensitive | 3 | [NiFe]-centre, 3 x [4Fe4S] clusters | F420 reductase |
| WP_011973924.1 | Methanococcus aeolicus | [NiFe] Group 3c | Euryarchaeota | Methanococcales | Bifurcating | Sensitive | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Polyferredoxin, [FeS] protein |
| WP_011988737.1 | Clostridium kluyveri | [FeFe] Group B | Firmicutes | Clostridiales | Evolving | Labile | 1 | [FeFe]-centre, 2 x [4Fe4S] clusters | None |
| WP_011989407.1 | Clostridium kluyveri | [FeFe] Group A4 | Firmicutes | Clostridiales | Bifurcating | Labile | 6 | [FeFe]-centre, 2 x [4Fe4S] clusters | NADP dehydrogenase, four FeS proteins |
| WP_011991040.1 | Methanoregula boonei | [NiFe] Group 4e | Euryarchaeota | Methanomicrobiales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
| WP_011991841.1 | Campylobacter curvus | [NiFe] Group 4a | Epsilonproteobacteria | Campylobacterales | Evolving | Sensitive | 6 or 9 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, two [FeS] proteins, (three antiporter subunits) |
| WP_011993415.1 | Fervidobacterium nodosum | [FeFe] Group A3 | Thermotogae | Thermotogales | Bifurcating | Labile | 3 | [FeFe]-centre, 3 x [4Fe4S] clusters, 2 x [2Fe2S] cluster | NADH dehydrogenase, thioredoxin |
| WP_011993425.1 | Fervidobacterium nodosum | [FeFe] Group A1 | Thermotogae | Thermotogales | Evolving | Labile | 1 | [FeFe]-centre, 3 x [4Fe4S] clusters, 1 x [2Fe2S] cluster | None |
| WP_011993504.1 | Fervidobacterium nodosum | [FeFe] Group C3 | Thermotogae | Thermotogales | Sensory | Labile | 3 | [FeFe]-centre, 2 x [4Fe4S] clusters, PAS domain | Phosphatase, thioredoxin |
| WP_011996000.1 | Xanthobacter autotrophicus | [NiFe] Group 2b | Alphaproteobacteria | Rhizobiales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_012002999.1 | Thermotoga lettingae | [FeFe] Group A3 | Thermotogae | Thermotogales | Bifurcating | Labile | 3 | [FeFe]-centre, 3 x [4Fe4S] clusters, 2 x [2Fe2S] cluster | NADH dehydrogenase, thioredoxin |
| WP_012003003.1 | Thermotoga lettingae | [FeFe] Group C3 | Thermotogae | Thermotogales | Sensory | Labile | 3 | [FeFe]-centre, 2 x [4Fe4S] clusters, PAS domain | Phosphatase, thioredoxin |
| WP_012003383.1 | Thermotoga lettingae | [FeFe] Group A1 | Thermotogae | Thermotogales | Evolving | Labile | 1 | [FeFe]-centre, 3 x [4Fe4S] clusters, 1 x [2Fe2S] cluster | None |
| WP_012020882.1 | Metallosphaera sedula | [NiFe] Group 2e | Crenarchaeota | Sulfolobales | Anaerobic Uptake | Unknown | 2 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | None |
| WP_012025884.1 | Flavobacterium johnsoniae | [NiFe] Group 1d | Bacteroidetes | Flavobacteriales | Aerobic Uptake | Tolerant | 3 | [NiFe]-centre, 1 x [4Fe3S] cluster, 1 x [3Fe4S] cluster, 1 x [4Fe4S] cluster | Cytochrome b |
| WP_012031839.1 | Pelotomaculum thermopropionicum | [FeFe] Group A4 | Firmicutes | Clostridiales | Evolving | Labile | 3 | [FeFe]-centre, 2 x [4Fe4S] clusters | FeS protein, FeS protein |
| WP_012032547.1 | Pelotomaculum thermopropionicum | [FeFe] Group A3 | Firmicutes | Clostridiales | Bifurcating | Labile | 3 | [FeFe]-centre, 3 x [4Fe4S] clusters, 1 x [2Fe2S] cluster | NADH dehydrogenase, thioredoxin |
| WP_012032862.1 | Pelotomaculum thermopropionicum | [NiFe] Group 1a | Firmicutes | Clostridiales | Anaerobic Uptake | Sensitive | 3 | [NiFe]-centre, 3 x [4Fe4S] clusters | Cytochrome |
| WP_012033166.1 | Pelotomaculum thermopropionicum | [FeFe] Group A3 | Firmicutes | Clostridiales | Bifurcating | Labile | 3 | [FeFe]-centre, 3 x [4Fe4S] clusters, 1 x [2Fe2S] cluster | NADH dehydrogenase, thioredoxin |
| WP_012035102.1 | Methanocella arvoryzae | [NiFe] Group 3a | Euryarchaeota | Methanocellales | Anaerobic Uptake | Sensitive | 3 | [NiFe]-centre, 3 x [4Fe4S] clusters | F420 reductase |
| WP_012035310.1 | Methanocella arvoryzae | [NiFe] Group 3a | Euryarchaeota | Methanocellales | Anaerobic Uptake | Sensitive | 3 | [NiFe]-centre, 3 x [4Fe4S] clusters | F420 reductase |
| WP_012035507.1 | Methanocella arvoryzae | [NiFe] Group 4e | Euryarchaeota | Methanocellales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
| WP_012036281.1 | Methanocella arvoryzae | [NiFe] Group 1k | Euryarchaeota | Methanocellales | Anaerobic Uptake | Sensitive | 3 | [NiFe]-centre, 3 x [4Fe4S] clusters | Cytochrome b |
| WP_012036509.1 | Methanocella arvoryzae | [NiFe] Group 3c | Euryarchaeota | Methanocellales | Bifurcating | Sensitive | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Polyferredoxin, [FeS] protein |