| WP_014450901.1 | Fervidobacterium pennivorans | [FeFe] Group A1 | Thermotogae | Thermotogales | Evolving | Labile | 1 | [FeFe]-centre, 3 x [4Fe4S] clusters, 1 x [2Fe2S] cluster | None |
| WP_014451413.1 | Fervidobacterium pennivorans | [FeFe] Group C3 | Thermotogae | Thermotogales | Sensory | Labile | 3 | [FeFe]-centre, 2 x [4Fe4S] clusters, PAS domain | Phosphatase, thioredoxin |
| WP_014451418.1 | Fervidobacterium pennivorans | [FeFe] Group A3 | Thermotogae | Thermotogales | Bifurcating | Labile | 3 | [FeFe]-centre, 3 x [4Fe4S] clusters, 2 x [2Fe2S] cluster | NADH dehydrogenase, thioredoxin |
| WP_014455790.1 | Spirochaeta africana | [FeFe] Group A3 | Spirochaetes | Spirochaetales | Bifurcating | Labile | 3 | [FeFe]-centre, 3 x [4Fe4S] clusters, 1 x [2Fe2S] cluster | NADH dehydrogenase, thioredoxin |
| WP_014456422.1 | Spirochaeta africana | [FeFe] Group A3 | Spirochaetes | Spirochaetales | Bifurcating | Labile | 4 | [FeFe]-centre, 3 x [4Fe4S] clusters, 1 x [2Fe2S] cluster | NADH dehydrogenase, thioredoxin, thioredoxin |
| WP_014468932.1 | Arcobacter butzleri | [NiFe] Group 1b | Epsilonproteobacteria | Campylobacterales | Anaerobic Uptake | Sensitive | 3 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | Cytochrome |
| WP_014468937.1 | Arcobacter butzleri | [NiFe] Group 1b | Epsilonproteobacteria | Campylobacterales | Anaerobic Uptake | Sensitive | 3 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | Cytochrome |
| WP_014487195.1 | Brachyspira intermedia | [FeFe] Group A3 | Spirochaetes | Spirochaetales | Bifurcating | Labile | 3 | [FeFe]-centre, 3 x [4Fe4S] clusters, 1 x [2Fe2S] cluster | NADH dehydrogenase, thioredoxin |
| WP_014487517.1 | Brachyspira intermedia | [FeFe] Group B | Spirochaetes | Spirochaetales | Evolving | Labile | 1 | [FeFe]-centre, 3 x [4Fe4S] clusters, 1 x [2Fe2S] cluster | None |
| WP_014511332.1 | Thermus thermophilus | [NiFe] Group 2a | Deinococcus-Thermus | Thermales | Aerobic Uptake | Tolerant | 5 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | [FeS] protein, hypothetical proteins |
| WP_014512387.1 | Sulfolobus islandicus | [NiFe] Group 1h | Crenarchaeota | Sulfolobales | Aerobic Uptake | Tolerant | 3 | [NiFe]-centre, 3 x [4Fe4S] clusters | [FeS] protein |
| WP_014551809.1 | Geobacter sulfurreducens | [NiFe] Group 3c | Deltaproteobacteria | Desulfuromonadales | Bidirectional | Tolerant | 4 | [NiFe]-centre, 1 x [4Fe4S] clusters | Diaphorase, [FeS] protein |
| WP_014551946.1 | Geobacter sulfurreducens | [NiFe] Group 3d | Deltaproteobacteria | Desulfuromonadales | Bidirectional | Tolerant | 4 | [NiFe]-centre, 1 x [4Fe4S] clusters | Diaphorase, [FeS] protein |
| WP_014552161.1 | Geobacter sulfurreducens | [FeFe] Group C3 | Deltaproteobacteria | Desulfuromonadales | Sensory | Labile | 1 | [FeFe]-centre, 2 x [4Fe4S] clusters, PAS domain | Fusion with transcriptional activator |
| WP_014553742.1 | Halanaerobium praevalens | [FeFe] Group B | Firmicutes | Halanaerobiales | Evolving | Labile | 1 | [FeFe]-centre, 3 x [4Fe4S] clusters, 1 x [2Fe2S] cluster | None |
| WP_014553745.1 | Halanaerobium praevalens | [FeFe] Group C3 | Firmicutes | Halanaerobiales | Sensory | Labile | 2 | [FeFe]-centre, 2 x [4Fe4S] clusters, PAS domain | Phosphatase |
| WP_014553773.1 | Halanaerobium praevalens | [FeFe] Group A3 | Firmicutes | Halanaerobiales | Bifurcating | Labile | 4 | [FeFe]-centre, 3 x [4Fe4S] clusters, 1 x [2Fe2S] cluster | NADH dehydrogenase, thioredoxin, thioredoxin |
| WP_014553922.1 | Halanaerobium praevalens | [FeFe] Group B | Firmicutes | Halanaerobiales | Evolving | Labile | 1 | [FeFe]-centre, 2 x [4Fe4S] clusters | None |
| WP_014558156.1 | Fervidicoccus fontis | [NiFe] Group 3b | Crenarchaeota | Fervidicoccales | Bidirectional | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Diaphorase, [FeS] protein |
| WP_014558423.1 | Fervidicoccus fontis | [NiFe] Group 4a | Crenarchaeota | Fervidicoccales | Evolving | Sensitive | 6 or 9 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, two [FeS] proteins, (three antiporter subunits) |
| WP_014559401.1 | Ignavibacterium album | [FeFe] Group A3 | Ignavibacteriae | Ignavibacteriales | Bifurcating | Labile | 3 | [FeFe]-centre, 3 x [4Fe4S] clusters, 1 x [2Fe2S] cluster | NADH dehydrogenase, thioredoxin |
| WP_014559402.1 | Ignavibacterium album | [FeFe] Group C3 | Ignavibacteriae | Ignavibacteriales | Sensory | Labile | 1 | [FeFe]-centre, 2 x [4Fe4S] clusters, PAS domain | Fusion with histidine kinase |
| WP_014620707.1 | Shewanella baltica | [NiFe] Group 1b | Gammaproteobacteria | Alteromonadales | Anaerobic Uptake | Sensitive | 3 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | Cytochrome |
| WP_014639275.1 | Escherichia coli | [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_014641051.1 | Escherichia coli | [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_014661358.1 | Helicobacter cetorum | [NiFe] Group 1b | Epsilonproteobacteria | Campylobacterales | Anaerobic Uptake | Sensitive | 3 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | Cytochrome |
| WP_014670577.1 | Streptomyces hygroscopicus | [NiFe] Group 1h | Actinobacteria | Actinomycetales | Aerobic Uptake | Tolerant | 3 | [NiFe]-centre, 3 x [4Fe4S] clusters | [FeS] protein |
| WP_014677317.1 | Streptomyces hygroscopicus | [NiFe] Group 3b | Actinobacteria | Actinomycetales | Bidirectional | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Diaphorase, [FeS] protein |
| WP_014725822.1 | Burkholderia sp. KJ006 | [NiFe] Group 2b | Betaproteobacteria | Burkholderiales | Sensory | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Histidine kinase, response regulator |
| WP_014730285.1 | Mesotoga prima | [FeFe] Group A1 | Thermotogae | Thermotogales | Evolving | Labile | 1 | [FeFe]-centre, 3 x [4Fe4S] clusters, 1 x [2Fe2S] cluster | None |
| WP_014734005.1 | Pyrococcus sp. ST04 | [NiFe] Group 3b | Euryarchaeota | Thermococcales | Bidirectional | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Diaphorase, [FeS] protein |
| WP_014734228.1 | Pyrococcus sp. ST04 | [NiFe] Group 3b | Euryarchaeota | Thermococcales | Bidirectional | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Diaphorase, [FeS] protein |
| WP_014734412.1 | Pyrococcus sp. ST04 | [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_014737566.1 | Thermogladius cellulolyticus | [NiFe] Group 4g | Crenarchaeota | Thermococcales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
| WP_014737671.1 | Thermogladius cellulolyticus | [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_014737726.1 | Thermogladius cellulolyticus | [NiFe] Group 3b | Crenarchaeota | Desulfurococcales | Bidirectional | Tolerant | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Diaphorase, [FeS] protein |
| WP_014757614.1 | Thermoanaerobacterium saccharolyticum | [NiFe] Group 4e | Firmicutes | Thermoanaerobacterales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
| WP_014758428.1 | Thermoanaerobacterium saccharolyticum | [FeFe] Group C3 | Firmicutes | Thermoanaerobacterales | Sensory | Labile | 3 | [FeFe]-centre, 2 x [4Fe4S] clusters, PAS domain | Phosphatase, thioredoxin |
| WP_014758430.1 | Thermoanaerobacterium saccharolyticum | [FeFe] Group B | Firmicutes | Thermoanaerobacterales | Evolving | Labile | 1 | [FeFe]-centre, 3 x [4Fe4S] clusters, 1 x [2Fe2S] cluster | None |
| WP_014758969.1 | Thermoanaerobacterium saccharolyticum | [FeFe] Group A3 | Firmicutes | Thermoanaerobacterales | Bifurcating | Labile | 4 | [FeFe]-centre, 3 x [4Fe4S] clusters, 1 x [2Fe2S] cluster | NADH dehydrogenase, thioredoxin, thioredoxin |
| WP_014758976.1 | Thermoanaerobacterium saccharolyticum | [FeFe] Group C1 | Firmicutes | Thermoanaerobacterales | Sensory | Labile | 2 | [FeFe]-centre, 2 x [4Fe4S] clusters, PAS domain | Histidine kinase |
| WP_014767907.1 | Desulfurococcus fermentans | [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_014769235.1 | Sulfurospirillum barnesii | [NiFe] Group 4c | Epsilonproteobacteria | Campylobacterales | Evolving | Sensitive | 7 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein, polyferredoxin |
| WP_014769320.1 | Sulfurospirillum barnesii | [NiFe] Group 1b | Epsilonproteobacteria | Campylobacterales | Anaerobic Uptake | Sensitive | 3 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | Cytochrome |
| WP_014770116.1 | Sulfurospirillum barnesii | [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_014777057.1 | Thiocystis violascens | [NiFe] Group 4e | Gammaproteobacteria | Chromatiales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
| WP_014777645.1 | Thiocystis violascens | [NiFe] Group 3d | Gammaproteobacteria | Chromatiales | Bidirectional | Tolerant | 4 | [NiFe]-centre, 1 x [4Fe4S] clusters | Diaphorase, [FeS] protein |
| WP_014777800.1 | Thiocystis violascens | [NiFe] Group 1e | Gammaproteobacteria | Chromatiales | Anaerobic Uptake | Sensitive | 4 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | Cytochrome b, [FeS] protein |
| WP_014779054.1 | Thiocystis violascens | [NiFe] Group 1e | Gammaproteobacteria | Chromatiales | Anaerobic Uptake | Sensitive | 4 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | Cytochrome b, [FeS] protein |
| WP_014779996.1 | Thiocystis violascens | [NiFe] Group 1d | Gammaproteobacteria | Chromatiales | Aerobic Uptake | Tolerant | 3 | [NiFe]-centre, 1 x [4Fe3S] cluster, 1 x [3Fe4S] cluster, 1 x [4Fe4S] cluster | Cytochrome b |