ArchaeaBacteriaGenomeGenome, BacterialGenome, ViralPhylogenyMolecular Sequence DataGenome, ArchaealBase SequenceSequence Analysis, DNAArchaeal ProteinsGenes, ArchaealGenome, PlantGenome, HumanDNA, ArchaealGram-Negative BacteriaGram-Positive BacteriaAmino Acid SequenceRNA, ArchaealBacterial ProteinsRNA, Ribosomal, 16SEvolution, MolecularDNA, BacterialGenome, MitochondrialBacteria, AnaerobicGenome, FungalSequence AlignmentEscherichia coliCrenarchaeotaCloning, MolecularGenes, BacterialDNA, RibosomalGenome SizeSpecies SpecificitySequence Homology, Amino AcidMethaneGenomicsGene Expression Regulation, ArchaealSequence Homology, Nucleic AcidOpen Reading FramesHaloferax volcaniiSeawaterBase CompositionRibosomal ProteinsMultigene FamilyBacteria, AerobicMutationTranscription, GeneticWater MicrobiologyMethanococcusChromosome MappingPolymerase Chain ReactionRNA, BacterialPlasmidsGenetic VariationGenome, InsectSulfolobusGene Transfer, HorizontalSoil MicrobiologyGeologic SedimentsGenome, ProtozoanGene Expression Regulation, BacterialBacterial Physiological PhenomenaEuryarchaeotaConserved SequenceMethanobacteriaceaeGenes, rRNANucleic Acid HybridizationDNA PrimersGenes, ViralEukaryotaComputational BiologyAnaerobiosisGene OrderSulfur-Reducing BacteriaSymbiosisNitrificationMethanosarcinaPromoter Regions, GeneticModels, GeneticRecombination, GeneticGram-Negative Anaerobic BacteriaGenome, ChloroplastRestriction MappingRNA, MessengerGenesEukaryotic CellsDNA, ViralUbiquitin ThiolesteraseAnti-Bacterial AgentsBiological EvolutionDNACulture MediaMethanobacteriumGram-Negative Aerobic BacteriaProteobacteriaCodonCluster AnalysisDesulfurococcaceaePhenotype