Table 1.

Identification and sources of microorganisms possessing genes specifying auxiliary and structural components of the group 5 [NiFe]-hydrogenase

Phylum and speciesaSourcebAuxiliary gene(s) not detectedcOther [NiFe]-hydrogenase(s)
Actinobacteria
    Streptomyces avermitilis (hypX+)Soil
    Streptomyces scabiei (hypX+)Soil
    Streptomyces sviceus (hypX+)Soil
    Streptomyces griseoflavusSoilGroup 3b
    Streptomyces sp. Mg1 (hypX+)SoilGroup 3b
    Streptomyces sp. C (hypX+)Soil
    Streptomyces clavuligerusSoil
    Streptomyces viridochromogenes (hypX+)SoilORF3Group 1
    Streptomyces ghanaensis (hypX+)SoilORF3
    Mycobacterium sp. KMSPAH-contaminated soilGroup 3b
    Mycobacterium sp. MCSPAH-contaminated soilGroup 3b
    Mycobacterium sp. JLSPAH-contaminated soilGroup 3b
    Mycobacterium smegmatisHuman smegmaGroups 2a, 3b
    Mycobacterium aviumClinical isolatehypA, hypB, hypC, hypD, hypE, hypF
    Mycobacterium kansasiiClinical isolateGroup 3b
    Mycobacterium marinum MHuman isolateGroup 3b
    Mycobacterium parascrofulaceumClinical isolateGroup 3b
    Rhodococcus jostii RHA1Lindane-contaminated soilGroup 3b
    Rhodococcus erythropolis PR4SeawaterGroup 3b
    Rhodococcus erythropolis SK121Human skinhypAGroup 3b
    Rhodococcus equiHuman abscessGroup 3b
    Rhodococcus opacus B4Gasoline-contaminated soilGroup 3d
    Frankia sp. EAN1pecRoot noduleGroup 1
    Frankia sp. CcI3Root noduleORF3Groups 2a, 3b
    Frankia alni ACN14aRoot noduleORF3Group 2a
    Saccharopolyspora erythraeaSoil
    Saccharomonospora viridisPeat
    Thermobispora bisporaDecaying manureORF4Groups 2a, 3b
    Thermomonospora curvataStrawORF3, ORF4, hypB
    Amycolatopsis mediterranei U32Soil
    Streptosporangium roseumSoilhypBGroup 3b
    Conexibacter woeseiSoil
Proteobacteria
    Ralstonia eutropha H16 (hypX+)SludgeGroups 1, 2b, 3d
    Methylosinus trichosporium OB3bSediment, soil, and waterGroups 1, 2b, 3b
Chloroflexi
    Thermomicrobium roseumHot springORF1
    Sphaerobacter thermophilusThermophilic sewage sludgeORF3, hypD, hypE, hypF
    Ktedonobacter racemiferSoil
Acidobacteria
    Acidobacterium sp. MP5ACTX8Acidic soil
    Solibacter usitatus Ellin6076Grazed pasturehypAGroups 1, 3d

  • ↵a Microorganisms possessing the hypX-like gene are identified (hypX+).

  • ↵b PAH, polycyclic aromatic hydrocarbon.

  • ↵c A list of the accession numbers of the auxiliary genes detected is provided in Table S1 in the supplemental material.