[NiFe] Group 2b-hydrogenase

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

Properties
Group [NiFe] Group 2: Alternative and sensory H2-uptake [NiFe] hydrogenases
Subgroup [NiFe] Group 2b: Histidine kinase-linked
Function H2-sensing in regulatory cascades. Enzyme transfers H2-liberated electrons to PAS domain. Associated redox change modulates histidine kinase activity and in turn the two-component system controlling expression of primary H2-uptake hydrogenases.
Activity H2-sensing
Oxygen tolerance O2-tolerant
Localisation Cytosolic
Distribution
Ecosystem distribution Various soil and aquatic samples
Taxonomic distribution Exclusive to aerobic Proteobacteria
Genetic Organisation

e.g. Ralstonia eutropha (WP_011153946.1):

Architecture
Structures
    None
Subunits 3
Subunit description HupV (hydrogenase large subunit)
HupU (hydrogenase small subunit)
HupK (histidine kinase)
Interacts with response regulator (HupR)
Catalytic site [NiFe]-centre
FeS clusters Proximal: 4Cys[4Fe4S]
Medial: 4Cys[4Fe4S]
Distal: 3Cys1His[4Fe4S]
Sequences in this class
NCBI AccessionOrganismHydrogenase ClassPhylumOrderActivity (Predicted)Oxygen Tolerance (Predicted)Subunits (Predicted)Metal Centres (Predicted)Accessory Subunits (Predicted)
WP_019642787.1Thioalkalivibrio sp. ALSr1[NiFe] Group 2bGammaproteobacteriaChromatialesSensoryTolerant4[NiFe]-centre, 3 x [4Fe4S] clustersHistidine kinase, response regulator
WP_020043467.1Salipiger mucosus[NiFe] Group 2bAlphaproteobacteriaRhodobacteralesSensoryTolerant4[NiFe]-centre, 3 x [4Fe4S] clustersHistidine kinase, response regulator
WP_020162849.1Methyloversatilis universalis[NiFe] Group 2bBetaproteobacteriaRhodocyclalesSensoryTolerant4[NiFe]-centre, 3 x [4Fe4S] clustersHistidine kinase, response regulator
WP_020394871.1Thiothrix disciformis[NiFe] Group 2bGammaproteobacteriaThiotrichalesSensoryTolerant4[NiFe]-centre, 3 x [4Fe4S] clustersHistidine kinase, response regulator
WP_020503142.1Lamprocystis purpurea[NiFe] Group 2bGammaproteobacteriaChromatialesSensoryTolerant4[NiFe]-centre, 3 x [4Fe4S] clustersHistidine kinase, response regulator
WP_020745474.1Alteromonas macleodii[NiFe] Group 2bGammaproteobacteriaAlteromonadalesSensoryTolerant4[NiFe]-centre, 3 x [4Fe4S] clustersHistidine kinase, response regulator
WP_022723662.1Rhodopseudomonas sp. B29[NiFe] Group 2bAlphaproteobacteriaRhizobialesSensoryTolerant4[NiFe]-centre, 3 x [4Fe4S] clustersHistidine kinase, response regulator
WP_023105857.1Pseudomonas aeruginosa[NiFe] Group 2bGammaproteobacteriaPseudomonadalesSensoryTolerant4[NiFe]-centre, 3 x [4Fe4S] clustersHistidine kinase, response regulator
WP_023664198.1Rhodobacter sp. CACIA14H1[NiFe] Group 2bAlphaproteobacteriaRhodobacteralesSensoryTolerant4[NiFe]-centre, 3 x [4Fe4S] clustersHistidine kinase, response regulator
WP_023918084.1Rhodobacter capsulatus[NiFe] Group 2bAlphaproteobacteriaRhodobacteralesSensoryTolerant4[NiFe]-centre, 3 x [4Fe4S] clustersHistidine kinase, response regulator
WP_024080410.1Magnetospirillum gryphiswaldense[NiFe] Group 2bAlphaproteobacteriaRhodospirallesSensoryTolerant4[NiFe]-centre, 3 x [4Fe4S] clustersHistidine kinase, response regulator
WP_024281261.1Xanthobacter sp. 126[NiFe] Group 2bAlphaproteobacteriaRhizobialesSensoryTolerant4[NiFe]-centre, 3 x [4Fe4S] clustersHistidine kinase, response regulator
WP_024762399.1Pseudomonas nitroreducens[NiFe] Group 2bGammaproteobacteriaPseudomonadalesSensoryTolerant4[NiFe]-centre, 3 x [4Fe4S] clustersHistidine kinase, response regulator
WP_024844879.1Paracoccus pantotrophus[NiFe] Group 2bAlphaproteobacteriaRhodobacteralesSensoryTolerant4[NiFe]-centre, 3 x [4Fe4S] clustersHistidine kinase, response regulator
WP_024878510.1Methylosinus sp. LW3[NiFe] Group 2bAlphaproteobacteriaRhizobialesSensoryTolerant4[NiFe]-centre, 3 x [4Fe4S] clustersHistidine kinase, response regulator
WP_025825893.1Acetobacter okinawensis[NiFe] Group 2bAlphaproteobacteriaRhodospirallesSensoryTolerant4[NiFe]-centre, 3 x [4Fe4S] clustersHistidine kinase, response regulator
WP_026436955.1Acidovorax sp. JHL-9[NiFe] Group 2bBetaproteobacteriaBurkholderialesSensoryTolerant4[NiFe]-centre, 3 x [4Fe4S] clustersHistidine kinase, response regulator
WP_026600034.1Methylocystis sp. LW5[NiFe] Group 2bAlphaproteobacteriaRhizobialesSensoryTolerant4[NiFe]-centre, 3 x [4Fe4S] clustersHistidine kinase, response regulator
WP_026685912.1Azovibrio restrictus[NiFe] Group 2bBetaproteobacteriaRhodocyclalesSensoryTolerant4[NiFe]-centre, 3 x [4Fe4S] clustersHistidine kinase, response regulator
WP_027457230.1Dechloromonas agitata[NiFe] Group 2bBetaproteobacteriaBurkholderialesSensoryTolerant4[NiFe]-centre, 3 x [4Fe4S] clustersHistidine kinase, response regulator
WP_027476516.1Curvibacter gracilis[NiFe] Group 2bBetaproteobacteriaBurkholderialesSensoryTolerant4[NiFe]-centre, 3 x [4Fe4S] clustersHistidine kinase, response regulator
WP_027854268.1Marinobacterium litorale[NiFe] Group 2bGammaproteobacteriaAlteromonadalesSensoryTolerant4[NiFe]-centre, 3 x [4Fe4S] clustersHistidine kinase, response regulator
WP_027856391.1Marinobacterium jannaschii[NiFe] Group 2bGammaproteobacteriaAlteromonadalesSensoryTolerant4[NiFe]-centre, 3 x [4Fe4S] clustersHistidine kinase, response regulator
WP_028135604.1Bradyrhizobium japonicum[NiFe] Group 2bAlphaproteobacteriaRhizobialesSensoryTolerant4[NiFe]-centre, 3 x [4Fe4S] clustersHistidine kinase, response regulator
WP_028293252.1Oceanobacter kriegii[NiFe] Group 2bGammaproteobacteriaOceanospirillalesSensoryTolerant4[NiFe]-centre, 3 x [4Fe4S] clustersHistidine kinase, response regulator
WP_028302096.1Oceanospirillum beijerinckii[NiFe] Group 2bGammaproteobacteriaOceanospirillalesSensoryTolerant4[NiFe]-centre, 3 x [4Fe4S] clustersHistidine kinase, response regulator
WP_028309992.1Derxia gummosa[NiFe] Group 2bBetaproteobacteriaBurkholderialesSensoryTolerant4[NiFe]-centre, 3 x [4Fe4S] clustersHistidine kinase, response regulator
WP_028714014.1Paracoccus sp. J55[NiFe] Group 2bAlphaproteobacteriaRhodobacteralesSensoryTolerant4[NiFe]-centre, 3 x [4Fe4S] clustersHistidine kinase, response regulator
WP_028717756.1Paracoccus yeei[NiFe] Group 2bAlphaproteobacteriaRhodobacteralesSensoryTolerant4[NiFe]-centre, 3 x [4Fe4S] clustersHistidine kinase, response regulator
WP_028738631.1Rhizobium selenitireducens[NiFe] Group 2bAlphaproteobacteriaRhizobialesSensoryTolerant4[NiFe]-centre, 3 x [4Fe4S] clustersHistidine kinase, response regulator
WP_028877931.1Terasakiella pusilla[NiFe] Group 2bAlphaproteobacteriaRhizobialesSensoryTolerant4[NiFe]-centre, 3 x [4Fe4S] clustersHistidine kinase, response regulator
WP_028993698.1Azonexus hydrophilus[NiFe] Group 2bBetaproteobacteriaRhodocyclalesSensoryTolerant4[NiFe]-centre, 3 x [4Fe4S] clusters[FeS] protein, hypothetical proteins
WP_028999766.1Azohydromonas australica[NiFe] Group 2bBetaproteobacteriaBurkholderialesSensoryTolerant4[NiFe]-centre, 3 x [4Fe4S] clustersHistidine kinase, response regulator
WP_029004859.1Azorhizobium doebereinerae[NiFe] Group 2bAlphaproteobacteriaRhizobialesSensoryTolerant4[NiFe]-centre, 3 x [4Fe4S] clustersHistidine kinase, response regulator
WP_029009282.1Azospirillum halopraeferens[NiFe] Group 2bAlphaproteobacteriaRhodospirallesSensoryTolerant4[NiFe]-centre, 3 x [4Fe4S] clustersHistidine kinase, response regulator
WP_029356684.1Bosea sp. 117[NiFe] Group 2bAlphaproteobacteriaRhizobialesSensoryTolerant4[NiFe]-centre, 3 x [4Fe4S] clustersHistidine kinase, response regulator
WP_029556474.1Xanthobacter sp. 91[NiFe] Group 2bAlphaproteobacteriaRhizobialesSensoryTolerant4[NiFe]-centre, 3 x [4Fe4S] clustersHistidine kinase, response regulator

Literature

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