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_013460916.1 | Sulfuricurvum kujiense | [NiFe] Group 4e | Epsilonproteobacteria | Campylobacterales | 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_008340210.1 | Sulfurimonas gotlandica | [NiFe] Group 4e | Epsilonproteobacteria | Campylobacterales | 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_014777057.1 | Thiocystis violascens | [NiFe] Group 4e | Gammaproteobacteria | Chromatiales | 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_010251151.1 | Acetivibrio cellulolyticus | [NiFe] Group 4e | Firmicutes | Clostridiales | 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_027399701.1 | Anaerovorax odorimutans | [NiFe] Group 4e | Firmicutes | Clostridiales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_027203889.1 | Butyrivibrio fibrisolvens | [NiFe] Group 4e | Firmicutes | Clostridiales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_026651247.1 | Butyrivibrio proteoclasticus | [NiFe] Group 4e | Firmicutes | Clostridiales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_026892028.1 | Clostridium aerotolerans | [NiFe] Group 4e | Firmicutes | Clostridiales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_005213155.1 | Clostridium celatum | [NiFe] Group 4e | Firmicutes | Clostridiales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_027631079.1 | Clostridium cellobioparum | [NiFe] Group 4e | Firmicutes | Clostridiales | 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_014254276.1 | Clostridium clariflavum | [NiFe] Group 4e | Firmicutes | Clostridiales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_024832561.1 | Clostridium josui | [NiFe] Group 4e | Firmicutes | Clostridiales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_024346172.1 | Clostridium methoxybenzovorans | [NiFe] Group 4e | Firmicutes | Clostridiales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_004618281.1 | Clostridium papyrosolvens | [NiFe] Group 4e | Firmicutes | Clostridiales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_004628623.1 | Clostridium termitidis | [NiFe] Group 4e | Firmicutes | Clostridiales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_019226287.1 | Dehalobacter sp. E1 | [NiFe] Group 4e | Firmicutes | Clostridiales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_020490799.1 | Dehalobacter sp. FTH1 | [NiFe] Group 4e | Firmicutes | Clostridiales | 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_027871860.1 | Eubacterium cellulosolvens | [NiFe] Group 4e | Firmicutes | Clostridiales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_026835345.1 | Eubacterium xylanophilum | [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_027431522.1 | Lachnospira multipara | [NiFe] Group 4e | Firmicutes | Clostridiales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_028241974.1 | Pseudobutyrivibrio ruminis | [NiFe] Group 4e | Firmicutes | Clostridiales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_028246016.1 | Pseudobutyrivibrio ruminis | [NiFe] Group 4e | Firmicutes | Clostridiales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_028234750.1 | Pseudobutyrivibrio sp. MD2005 | [NiFe] Group 4e | Firmicutes | Clostridiales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_003514863.1 | Ruminiclostridium thermocellum | [NiFe] Group 4e | Firmicutes | Clostridiales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_007047619.1 | Subdoligranulum variabile | [NiFe] Group 4e | Firmicutes | Clostridiales | 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_013174844.1 | Syntrophothermus lipocalidus | [NiFe] Group 4e | Firmicutes | Clostridiales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_022739883.1 | Adlercreutzia equolifaciens | [NiFe] Group 4e | Actinobacteria | Coriobacteriales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_006235754.1 | Collinsella aerofaciens | [NiFe] Group 4e | Actinobacteria | Coriobacteriales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_022094158.1 | Collinsella sp. CAG:166 | [NiFe] Group 4e | Actinobacteria | Coriobacteriales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_022349360.1 | Collinsella sp. CAG:398 | [NiFe] Group 4e | Actinobacteria | Coriobacteriales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_006720658.1 | Collinsella stercoris | [NiFe] Group 4e | Actinobacteria | Coriobacteriales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_009142078.1 | Collinsella tanakaei | [NiFe] Group 4e | Actinobacteria | Coriobacteriales | 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_022379545.1 | Cryptobacterium sp. CAG:338 | [NiFe] Group 4e | Actinobacteria | Coriobacteriales | 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_021900040.1 | Eggerthella sp. CAG:1427 | [NiFe] Group 4e | Actinobacteria | Coriobacteriales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_022184688.1 | Eggerthella sp. CAG:209 | [NiFe] Group 4e | Actinobacteria | Coriobacteriales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_022363091.1 | Eggerthella sp. CAG:298 | [NiFe] Group 4e | Actinobacteria | Coriobacteriales | 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_016308760.1 | Enterorhabdus caecimuris | [NiFe] Group 4e | Actinobacteria | Coriobacteriales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_028026344.1 | Enterorhabdus mucosicola | [NiFe] Group 4e | Actinobacteria | Coriobacteriales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
WP_006361427.1 | Slackia exigua | [NiFe] Group 4e | Actinobacteria | Coriobacteriales | Evolving | Sensitive | 6 | [NiFe]-centre, 1 x [4Fe4S] clusters | NuoL, NuoH, NuoC, [FeS] protein |
Genetics:
Physiology:
Biochemistry: