This entry was last updated at: June 13, 2016, 11:11 a.m.
Group | [NiFe] Group 4: Respiratory H2-evolving [NiFe] hydrogenases |
Subgroup | [NiFe] Group 4e: Ferredoxin-coupled, Ech-type |
Function | Forms respiratory complex that couples oxidation of ferredoxinred to reduction of protons to H2 in acetoclastic methanogenesis. This process appears to be coupled to sodium or proton translocation through the transmembrane modules. The complex can also act in the reverse direction during hydrogenotrophic methanogenesis. |
Activity | Bidirectional |
Oxygen tolerance | O2-sensitive |
Localisation | Membrane-bound |
Ecosystem distribution | Anoxic soils and sediments, animal gastrointestinal tracts |
Taxonomic distribution | Encoded in multiple methanogenic orders and anaerobic bacteria |
e.g. Methanosarcina barkeri (WP_011305188.1):
Structures |
|
Subunits | 6 |
Subunit description | EchA (hydrogenase large subunit) EchC (hydrogenase small subunit) EchF (iron-sulfur subunit) EchB (NuoH-like transmembrane adaptor) EchA (NuoL-like transmembrane adaptor) EchD (NuoC-like transmembrane adaptor) |
Catalytic site | [NiFe]-centre |
FeS clusters | Proximal: 4Cys[4Fe4S] Medial: Absent Distal: Absent |
NCBI Accession | Organism | Hydrogenase Class | Phylum | Order | Activity (Predicted) | Oxygen Tolerance (Predicted) | Subunits (Predicted) | Metal Centres (Predicted) | Accessory Subunits (Predicted) |
---|---|---|---|---|---|---|---|---|---|
WP_016308760.1 | Enterorhabdus caecimuris | [NiFe] Group 4e | Actinobacteria | Coriobacteriales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_015926708.1 | Clostridium cellulolyticum | [NiFe] Group 4e | Firmicutes | Clostridiales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_015853104.1 | Desulfovibrio salexigens | [NiFe] Group 4e | Deltaproteobacteria | Desulfovibrionales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_015760641.1 | Eggerthella lenta | [NiFe] Group 4e | Actinobacteria | Coriobacteriales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_015738579.1 | Ammonifex degensii | [NiFe] Group 4e | Firmicutes | Clostridiales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_015720170.1 | Geobacter sp. M18 | [NiFe] Group 4e | Deltaproteobacteria | Desulfuromonadales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_015654365.1 | Sulfuricurvum sp. RIFRC-1 | [NiFe] Group 4e | Epsilonproteobacteria | Campylobacterales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_015536221.1 | Eubacterium cylindroides | [NiFe] Group 4e | Firmicutes | Erysipelotrichales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_015414775.1 | Desulfovibrio piezophilus | [NiFe] Group 4e | Deltaproteobacteria | Desulfovibrionales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_015336113.1 | Desulfovibrio hydrothermalis | [NiFe] Group 4e | Deltaproteobacteria | Desulfovibrionales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_015284201.1 | Methanoregula formicica | [NiFe] Group 4e | Euryarchaeota | Methanomicrobiales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_015282154.1 | Thioflavicoccus mobilis | [NiFe] Group 4e | Gammaproteobacteria | Chromatiales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_015051201.1 | Thermacetogenium phaeum | [NiFe] Group 4e | Firmicutes | Thermoanaerobacterales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_014867437.1 | Methanoculleus bourgensis | [NiFe] Group 4e | Euryarchaeota | Methanomicrobiales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
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_014757614.1 | Thermoanaerobacterium saccharolyticum | [NiFe] Group 4e | Firmicutes | Thermoanaerobacterales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_014405402.1 | Methanocella conradii | [NiFe] Group 4e | Euryarchaeota | Methanocellales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_014323623.1 | Desulfovibrio desulfuricans | [NiFe] Group 4e | Deltaproteobacteria | Desulfovibrionales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_014254276.1 | Clostridium clariflavum | [NiFe] Group 4e | Firmicutes | Clostridiales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_014062054.1 | Thermoanaerobacter wiegelii | [NiFe] Group 4e | Firmicutes | Thermoanaerobacterales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_014042067.1 | Caldicellulosiruptor lactoaceticus | [NiFe] Group 4e | Firmicutes | Thermoanaerobacterales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_013979777.1 | Eggerthella sp. YY7918 | [NiFe] Group 4e | Actinobacteria | Coriobacteriales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_013786935.1 | Thermoanaerobacterium xylanolyticum | [NiFe] Group 4e | Firmicutes | Thermoanaerobacterales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_013638341.1 | Desulfurobacterium thermolithotrophum | [NiFe] Group 4e | Aquificae | Desulfurobacteriales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_013625216.1 | Syntrophobotulus glycolicus | [NiFe] Group 4e | Firmicutes | Clostridiales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
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_013515288.1 | Desulfovibrio aespoeensis | [NiFe] Group 4e | Deltaproteobacteria | Desulfovibrionales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
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_013432390.1 | Caldicellulosiruptor kristjanssonii | [NiFe] Group 4e | Firmicutes | Thermoanaerobacterales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_013411862.1 | Caldicellulosiruptor owensensis | [NiFe] Group 4e | Firmicutes | Thermoanaerobacterales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_013403527.1 | Caldicellulosiruptor hydrothermalis | [NiFe] Group 4e | Firmicutes | Thermoanaerobacterales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_013328417.1 | Methanoplanus petrolearius | [NiFe] Group 4e | Euryarchaeota | Methanomicrobiales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_013296689.1 | Thermoanaerobacterium thermosaccharolyticum | [NiFe] Group 4e | Firmicutes | Thermoanaerobacterales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_013290727.1 | Caldicellulosiruptor obsidiansis | [NiFe] Group 4e | Firmicutes | Thermoanaerobacterales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_013174844.1 | Syntrophothermus lipocalidus | [NiFe] Group 4e | Firmicutes | Clostridiales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_012995592.1 | Thermoanaerobacter italicus | [NiFe] Group 4e | Firmicutes | Thermoanaerobacterales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_012969568.1 | Allochromatium vinosum | [NiFe] Group 4e | Gammaproteobacteria | Chromatiales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_012899275.1 | Methanocella paludicola | [NiFe] Group 4e | Euryarchaeota | Methanocellales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_012899230.1 | Methanocella paludicola | [NiFe] Group 4e | Euryarchaeota | Methanocellales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_012803120.1 | Cryptobacterium curtum | [NiFe] Group 4e | Actinobacteria | Coriobacteriales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_012798463.1 | Slackia heliotrinireducens | [NiFe] Group 4e | Actinobacteria | Coriobacteriales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_012749853.1 | Desulfovibrio magneticus | [NiFe] Group 4e | Deltaproteobacteria | Desulfovibrionales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_012663581.1 | Nautilia profundicola | [NiFe] Group 4e | Epsilonproteobacteria | Nautiliales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_012625292.1 | Desulfovibrio desulfuricans | [NiFe] Group 4e | Deltaproteobacteria | Desulfovibrionales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_012619310.1 | Methanosphaerula palustris | [NiFe] Group 4e | Euryarchaeota | Methanomicrobiales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_012376920.1 | Opitutus terrae | [NiFe] Group 4e | Verrucomicrobia | Opitutales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_012302199.1 | Desulforudis audaxviator | [NiFe] Group 4e | Firmicutes | Clostridiales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_012199760.1 | Lachnoclostridium phytofermentans | [NiFe] Group 4e | Firmicutes | Clostridiales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
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_011991040.1 | Methanoregula boonei | [NiFe] Group 4e | Euryarchaeota | Methanomicrobiales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
Genetics:
Physiology:
Biochemistry: