Hot TemperatureHot SpringsBacillusThermus thermophilusTemperatureEnzyme StabilityRNA, Ribosomal, 16SGeobacillusThermusBacteria, AnaerobicMolecular Sequence DataDNA, RibosomalSulfolobusPhylogenyBase CompositionDNA, BacterialArchaeaDesulfotomaculumGeobacillus stearothermophilusBacteriaBacillaceaeGram-Negative Anaerobic BacteriaThermoanaerobacterThermoanaerobacteriumSequence Analysis, DNAGram-Positive Asporogenous Rods, IrregularWyomingGram-Positive Endospore-Forming RodsChaetomiumMethanobacteriumHydrogen-Ion ConcentrationAnaerobiosisGenes, rRNAAmino Acid SequenceWater MicrobiologyRNA, BacterialArchaeal ProteinsCampylobacterSewageSulfur-Reducing BacteriaHydrogenophilaceaeBacterial ProteinsHydrogenSulfolobus acidocaldariusBioreactorsThiosulfatesSeawaterThermotoga maritimaEuryarchaeotaMethaneMethanobacteriaceaeRefuse DisposalTalaromycesCyanobacteriaEpsilonproteobacteriaCloning, MolecularEscherichia coliClostridiumBacterial Typing TechniquesMethanococcusGram-Negative Aerobic Rods and CocciMethanosarcinaceaeBase SequenceSulfurFatty AcidsWaste Disposal, FluidFermentationGram-Negative Chemolithotrophic Bacteria3-Isopropylmalate DehydrogenaseGram-Negative Aerobic BacteriaGenes, BacterialGram-Positive BacteriaHydrothermal VentsDNA, ArchaealCrenarchaeotaSequence Homology, Amino AcidThermoplasmaProton-Translocating ATPasesGram-Negative Anaerobic Straight, Curved, and Helical RodsMitosporic FungiSoil MicrobiologyPeptococcaceaeEurotialesCulture MediaBacteria, AerobicGram-Positive RodsKineticsMicromonosporaceaeAnoxybacillusProtein DenaturationClostridium thermocellumPacific OceanSubstrate SpecificitySpecies SpecificityCelluloseThermodynamicsSequence AlignmentFarmer's LungGram-Positive Endospore-Forming BacteriaRhodothermus