This entry was last updated at: June 13, 2016, 11:23 a.m.
Group | [NiFe] Group 3: Cofactor-coupled bidirectional [NiFe] hydrogenases |
Subgroup | [NiFe] Group 3c: Heterodisulfide reductase-linked |
Function | Bifurcates electrons from H2 to heterodisulfide and ferredoxin. This is the final step in the Wolfe cycle of methanogenesis. |
Activity | Electron-bifurcation |
Oxygen tolerance | O2-tolerant? |
Localisation | Cytosolic |
Ecosystem distribution | Methanogenic environments such as anoxic soils, marine sediments, and gastrointestinal tracts |
Taxonomic distribution | Encoded in most methanogens and sulfate-reducing bacteria |
e.g. Methanothermobacter marburgensis (WP_013296307.1):
Structures |
|
Subunits | 4 |
Subunit description | MvhA (hydrogenase large subunit) MvhG (hydrogenase small subunit) MvhD (iron-sulfur subunit) MvhB (polyferredoxin subunit) Forms complex with heterodisulfide reductase (HdrABC) |
Catalytic site | [NiFe]-centre or [NiFeSe]-centre |
FeS clusters | Proximal: 4Cys[4Fe4S] Medial: 4Cys[4Fe4S] Distal: 4Cys[4Fe4S] |
NCBI Accession | Organism | Hydrogenase Class | Phylum | Order | Activity (Predicted) | Oxygen Tolerance (Predicted) | Subunits (Predicted) | Metal Centres (Predicted) | Accessory Subunits (Predicted) |
---|---|---|---|---|---|---|---|---|---|
WP_007044701.1 | Methanotorris formicicus | [NiFe] Group 3c | Euryarchaeota | Methanococcales | Bifurcating | Sensitive | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Polyferredoxin, [FeS] protein |
WP_007043614.1 | Methanotorris formicicus | [NiFe] Group 3c | Euryarchaeota | Methanococcales | Bifurcating | Sensitive | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Polyferredoxin, [FeS] protein |
WP_013799074.1 | Methanotorris igneus | [NiFe] Group 3c | Euryarchaeota | Methanococcales | Bifurcating | Sensitive | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Polyferredoxin, [FeS] protein |
WP_013799334.1 | Methanotorris igneus | [NiFe] Group 3c | Euryarchaeota | Methanococcales | Bifurcating | Sensitive | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Polyferredoxin, [FeS] protein |
WP_015233716.1 | Natronobacterium gregoryi | [NiFe] Group 3c | Euryarchaeota | Halobacteriales | Bifurcating | Sensitive | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Polyferredoxin, [FeS] protein |
WP_012376486.1 | Opitutus terrae | [NiFe] Group 3c | Verrucomicrobia | Opitutales | Bifurcating | Sensitive | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Polyferredoxin, [FeS] protein |
WP_022775381.1 | Symbiobacter mobilis | [NiFe] Group 3c | Betaproteobacteria | Burkholderiales | Bifurcating | Sensitive | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Polyferredoxin, [FeS] protein |
WP_011700738.1 | Syntrophobacter fumaroxidans | [NiFe] Group 3c | Deltaproteobacteria | Syntrophobacterales | Bifurcating | Sensitive | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Polyferredoxin, [FeS] protein |
WP_011698648.1 | Syntrophobacter fumaroxidans | [NiFe] Group 3c | Deltaproteobacteria | Syntrophobacterales | Bifurcating | Sensitive | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Polyferredoxin, [FeS] protein |
WP_011699072.1 | Syntrophobacter fumaroxidans | [NiFe] Group 3c | Deltaproteobacteria | Syntrophobacterales | Bifurcating | Sensitive | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Polyferredoxin, [FeS] protein |
WP_011700332.1 | Syntrophobacter fumaroxidans | [NiFe] Group 3c | Deltaproteobacteria | Syntrophobacterales | Bifurcating | Sensitive | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Polyferredoxin, [FeS] protein |
WP_028894885.1 | Syntrophorhabdus aromaticivorans | [NiFe] Group 3c | Deltaproteobacteria | Syntrophobacterales | Bifurcating | Sensitive | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Polyferredoxin, [FeS] protein |
WP_022853555.1 | Thermodesulfatator atlanticus | [NiFe] Group 3c | Thermodesulfobacteria | Thermodesulfobacteriales | Bifurcating | Sensitive | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Polyferredoxin, [FeS] protein |
WP_013908379.1 | Thermodesulfatator indicus | [NiFe] Group 3c | Firmicutes | Thermodesulfobacteriales | Bifurcating | Sensitive | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Polyferredoxin, [FeS] protein |
WP_028840908.1 | Thermodesulfobacterium hveragerdense | [NiFe] Group 3c | Thermodesulfobacteria | Thermodesulfobacteriales | Bifurcating | Sensitive | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Polyferredoxin, [FeS] protein |
WP_013756665.1 | Thermodesulfobium narugense | [NiFe] Group 3c | Firmicutes | Thermoanaerobacterales | Bifurcating | Sensitive | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Polyferredoxin, [FeS] protein |
WP_012545782.1 | Thermodesulfovibrio yellowstonii | [NiFe] Group 3c | Nitrospirae | Nitrospirales | Bifurcating | Sensitive | 4 | [NiFe]-centre, 3 x [4Fe4S] clusters | Polyferredoxin, [FeS] protein |
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