This entry was last updated at: Feb. 9, 2018, 6:36 a.m.
Group | [NiFe] Group 2: Alternative and sensory H2-uptake [NiFe] hydrogenases |
Subgroup | [NiFe] Group 2a: Cyanobacteria-type |
Function | Hydrogenotrophic respiration using O2 as the terminal electron acceptor. Important for recycling of H2 produced by nitrogenase and fermentation. Route of electron transfer unresolved. |
Activity | H2-uptake (unidirectional, some high-affinity) |
Oxygen tolerance | Some O2-tolerant |
Localisation | Membrane-associated? |
Ecosystem distribution | Diverse soil and aquatic environments |
Taxonomic distribution | Widespread among Cyanobacteria and aerobic soil bacteria (e.g. Actinobacteria) |
e.g. Mycobacterium smegmatis (WP_003893634.1):
Structures |
|
Subunits | 3? |
Subunit description | None |
Catalytic site | [NiFe]-centre |
FeS clusters | Proximal: 3Cys1Asn[4Fe4S] Medial: 3Cys[3Fe4S] Distal: 3Cys1Glu[4Fe4S] |
NCBI Accession | Organism | Hydrogenase Class | Phylum | Order | Activity (Predicted) | Oxygen Tolerance (Predicted) | Subunits (Predicted) | Metal Centres (Predicted) | Accessory Subunits (Predicted) |
---|---|---|---|---|---|---|---|---|---|
WP_012407177.1 | Nostoc punctiforme | [NiFe] Group 2a | Cyanobacteria | Nostocales | Aerobic Uptake | Tolerant | 5 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | [FeS] protein, hypothetical proteins |
WP_015115410.1 | Nostoc sp. PCC 7107 | [NiFe] Group 2a | Cyanobacteria | Nostocales | Aerobic Uptake | Tolerant | 5 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | [FeS] protein, hypothetical proteins |
WP_010994852.1 | Nostoc sp. PCC 7120 | [NiFe] Group 2a | Cyanobacteria | Nostocales | Aerobic Uptake | Tolerant | 5 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | [FeS] protein, hypothetical proteins |
WP_015137522.1 | Nostoc sp. PCC 7524 | [NiFe] Group 2a | Cyanobacteria | Nostocales | Aerobic Uptake | Tolerant | 5 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | [FeS] protein, hypothetical proteins |
WP_008235596.1 | Richelia intracellularis | [NiFe] Group 2a | Cyanobacteria | Nostocales | Aerobic Uptake | Tolerant | 5 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | [FeS] protein, hypothetical proteins |
WP_015122102.1 | Rivularia sp. PCC 7116 | [NiFe] Group 2a | Cyanobacteria | Nostocales | Aerobic Uptake | Tolerant | 5 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | [FeS] protein, hypothetical proteins |
WP_017747426.1 | Scytonema hofmanni | [NiFe] Group 2a | Cyanobacteria | Nostocales | Aerobic Uptake | Tolerant | 5 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | [FeS] protein, hypothetical proteins |
WP_017747421.1 | Scytonema hofmanni | [NiFe] Group 2a | Cyanobacteria | Nostocales | Aerobic Uptake | Tolerant | 5 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | [FeS] protein, hypothetical proteins |
WP_013192388.1 | Trichormus azollae | [NiFe] Group 2a | Cyanobacteria | Nostocales | Aerobic Uptake | Tolerant | 5 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | [FeS] protein, hypothetical proteins |
WP_023069054.1 | Lyngbya aestuarii | [NiFe] Group 2a | Cyanobacteria | Oscillatoriales | Aerobic Uptake | Tolerant | 5 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | [FeS] protein, hypothetical proteins |
WP_009782476.1 | Lyngbya sp. PCC 8106 | [NiFe] Group 2a | Cyanobacteria | Oscillatoriales | Aerobic Uptake | Tolerant | 5 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | [FeS] protein, hypothetical proteins |
WP_017716714.1 | Oscillatoria sp. PCC 10802 | [NiFe] Group 2a | Cyanobacteria | Oscillatoriales | Aerobic Uptake | Tolerant | 5 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | [FeS] protein, hypothetical proteins |
WP_011612815.1 | Trichodesmium erythraeum | [NiFe] Group 2a | Cyanobacteria | Oscillatoriales | Aerobic Uptake | Tolerant | 5 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | [FeS] protein, hypothetical proteins |
WP_013896580.1 | Mesorhizobium opportunistum | [NiFe] Group 2a | Alphaproteobacteria | Rhizobiales | Aerobic Uptake | Tolerant | 5 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | [FeS] protein, hypothetical proteins |
WP_026607801.1 | Methylocapsa acidiphila | [NiFe] Group 2a | Alphaproteobacteria | Rhizobiales | Aerobic Uptake | Tolerant | 5 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | [FeS] protein, hypothetical proteins |
WP_012592713.1 | Methylocella silvestris | [NiFe] Group 2a | Alphaproteobacteria | Rhizobiales | Aerobic Uptake | Tolerant | 5 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | [FeS] protein, hypothetical proteins |
WP_020176873.1 | Methyloferula stellata | [NiFe] Group 2a | Alphaproteobacteria | Rhizobiales | Aerobic Uptake | Tolerant | 5 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | [FeS] protein, hypothetical proteins |
WP_007015744.1 | Novosphingobium pentaromativorans | [NiFe] Group 2a | Alphaproteobacteria | Sphingomonadales | Aerobic Uptake | Tolerant | 5 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | [FeS] protein, hypothetical proteins |
WP_011536525.1 | Sphingopyxis alaskensis | [NiFe] Group 2a | Alphaproteobacteria | Sphingomonadales | Aerobic Uptake | Tolerant | 5 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | [FeS] protein, hypothetical proteins |
WP_016875640.1 | Chlorogloeopsis fritschii | [NiFe] Group 2a | Cyanobacteria | Stigonematales | Aerobic Uptake | Tolerant | 5 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | [FeS] protein, hypothetical proteins |
WP_016860569.1 | Fischerella muscicola | [NiFe] Group 2a | Cyanobacteria | Stigonematales | Aerobic Uptake | Tolerant | 5 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | [FeS] protein, hypothetical proteins |
WP_026722320.1 | Fischerella sp. PCC 9431 | [NiFe] Group 2a | Cyanobacteria | Stigonematales | Aerobic Uptake | Tolerant | 5 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | [FeS] protein, hypothetical proteins |
WP_026731079.1 | Fischerella sp. PCC 9605 | [NiFe] Group 2a | Cyanobacteria | Stigonematales | Aerobic Uptake | Tolerant | 5 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | [FeS] protein, hypothetical proteins |
WP_017315132.1 | Mastigocladopsis repens | [NiFe] Group 2a | Cyanobacteria | Stigonematales | Aerobic Uptake | Tolerant | 5 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | [FeS] protein, hypothetical proteins |
WP_027846705.1 | Mastigocoleus testarum | [NiFe] Group 2a | Cyanobacteria | Stigonematales | Aerobic Uptake | Tolerant | 5 | [NiFe]-centre, 2 x [4Fe4S] clusters, 1 x [3Fe4S] cluster | [FeS] protein, hypothetical proteins |
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 |
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