[NiFe] Group 3c-hydrogenase

This entry was last updated at: June 13, 2016, 11:23 a.m.

Properties
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
Distribution
Ecosystem distribution Methanogenic environments such as anoxic soils, marine sediments, and gastrointestinal tracts
Taxonomic distribution Encoded in most methanogens and sulfate-reducing bacteria
Genetic Organisation

e.g. Methanothermobacter marburgensis (WP_013296307.1):

Architecture
Structures
    None
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]
Sequences in this class
NCBI AccessionOrganismHydrogenase ClassPhylumOrderActivity (Predicted)Oxygen Tolerance (Predicted)Subunits (Predicted)Metal Centres (Predicted)Accessory Subunits (Predicted)
WP_011018638.1Methanopyrus kandleri[NiFe] Group 3cEuryarchaeotaMethanopyralesBifurcatingSensitive4[NiFe]-centre, 3 x [4Fe4S] clustersPolyferredoxin, [FeS] protein
WP_011018550.1Methanopyrus kandleri[NiFe] Group 3cEuryarchaeotaMethanopyralesBifurcatingSensitive4[NiFe]-centre, 3 x [4Fe4S] clustersPolyferredoxin, [FeS] protein
WP_010936390.1Dehalococcoides mccartyi[NiFe] Group 3cChloroflexiDehalococcoidalesBifurcatingSensitive4[NiFe]-centre, 3 x [4Fe4S] clustersPolyferredoxin, [FeS] protein
WP_010878869.1Archaeoglobus fulgidus[NiFe] Group 3cEuryarchaeotaArchaeoglobalesBifurcatingSensitive4[NiFe]-centre, 3 x [4Fe4S] clustersPolyferredoxin, [FeS] protein
WP_010876758.1Methanothermobacter thermoautotrophicus[NiFe] Group 3cEuryarchaeotaMethanobacterialesBifurcatingSensitive4[NiFe]-centre, 3 x [4Fe4S] clustersPolyferredoxin, [FeS] protein
WP_010870705.1Methanocaldococcus jannaschii[NiFe] Group 3cEuryarchaeotaMethanococcalesBifurcatingSensitive4[NiFe]-centre, 3 x [4Fe4S] clustersPolyferredoxin, [FeS] protein
WP_008870928.1Desulfonatronospira thiodismutans[NiFe] Group 3cDeltaproteobacteriaDesulfovibrionalesBifurcatingSensitive4[NiFe]-centre, 3 x [4Fe4S] clustersPolyferredoxin, [FeS] protein
WP_008869690.1Desulfonatronospira thiodismutans[NiFe] Group 3cDeltaproteobacteriaDesulfovibrionalesBifurcatingSensitive4[NiFe]-centre, 3 x [4Fe4S] clustersPolyferredoxin, [FeS] protein
WP_007044701.1Methanotorris formicicus[NiFe] Group 3cEuryarchaeotaMethanococcalesBifurcatingSensitive4[NiFe]-centre, 3 x [4Fe4S] clustersPolyferredoxin, [FeS] protein
WP_007043614.1Methanotorris formicicus[NiFe] Group 3cEuryarchaeotaMethanococcalesBifurcatingSensitive4[NiFe]-centre, 3 x [4Fe4S] clustersPolyferredoxin, [FeS] protein
WP_006930005.1Caldithrix abyssi[NiFe] Group 3cCaldithrixCaldithrixalesBifurcatingSensitive4[NiFe]-centre, 3 x [4Fe4S] clustersPolyferredoxin, [FeS] protein
WP_004589824.1Methanocaldococcus villosus[NiFe] Group 3cEuryarchaeotaMethanococcalesBifurcatingSensitive4[NiFe]-centre, 3 x [4Fe4S] clustersPolyferredoxin, [FeS] protein
WP_004512544.1Geobacter metallireducens[NiFe] Group 3cDeltaproteobacteriaDesulfuromonadalesBidirectionalTolerant4[NiFe]-centre, 1 x [4Fe4S] clustersDiaphorase, [FeS] protein
WP_004039570.1Methanofollis liminatans[NiFe] Group 3cEuryarchaeotaMethanomicrobialesBifurcatingSensitive4[NiFe]-centre, 3 x [4Fe4S] clustersPolyferredoxin, [FeS] protein
WP_004032005.1Methanobacterium formicicum[NiFe] Group 3cEuryarchaeotaMethanobacterialesBifurcatingSensitive4[NiFe]-centre, 3 x [4Fe4S] clustersPolyferredoxin, [FeS] protein
WP_004031311.1Methanobacterium formicicum[NiFe] Group 3cEuryarchaeotaMethanobacterialesBifurcatingSensitive4[NiFe]-centre, 3 x [4Fe4S] clustersPolyferredoxin, [FeS] protein
KKK40681.1Lokiarchaeum sp. GC14_75[NiFe] Group 3cLokiarchaeotaN/ABifurcatingSensitive4[NiFe]-centre, 3 x [4Fe4S] clustersPolyferredoxin, [FeS] protein

Literature

Genetics:

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Chemistry: