Amino AcidsPeptide Nucleic AcidsSequence Homology, Amino AcidAmino Acid SequenceAmino Acid SubstitutionCloning, MolecularDNABase SequenceNucleic Acid ConformationNucleic Acid ProbesAmino Acids, EssentialMolecular Sequence DataNucleic Acid HybridizationNucleic Acid Amplification TechniquesAmino Acid Transport SystemsSequence AlignmentEscherichia coliRNABinding SitesAmino Acid MotifsMutationModels, MolecularSequence Homology, Nucleic AcidNucleic Acid DenaturationKineticsDNA, ComplementaryMutagenesis, Site-DirectedProtein ConformationProtein BindingRecombinant ProteinsStructure-Activity RelationshipPeptide FragmentsAmino Acids, AromaticOligonucleotidesLeucineProtein Structure, TertiaryAmino Acids, Branched-ChainPolymerase Chain ReactionSubstrate SpecificityAmino Acids, SulfurMolecular WeightPeptidesBacterial ProteinsSequence Analysis, DNACell LineProteinsRNA, MessengerPlasmidsPhylogenyRestriction MappingDNA PrimersDNA, BacterialElectrophoresis, Polyacrylamide GelGenes, BacterialRecombinant Fusion ProteinsSpecies SpecificityProtein Structure, SecondaryConserved SequenceAlanineRNA, ViralChromatography, High Pressure LiquidDNA, ViralLysineCattleOligodeoxyribonucleotidesCodonIsoleucineProtein BiosynthesisViral ProteinsAmino Acid Transport Systems, BasicCarrier ProteinsTranscription, GeneticGenesBiological TransportOligonucleotide ProbesAmino Acids, BasicGlycineOpen Reading FramesTemperatureGene LibraryTrypsinSaccharomyces cerevisiaeSequence AnalysisTransfectionCyanogen BromideArginineGlutamineSequence DeletionDNA-Binding ProteinsMethionineSelf-Sustained Sequence ReplicationPoint MutationValineRNA, BacterialAmino Acids, DiaminoMutagenesisDNA ProbesMacromolecular SubstancesPhenylalanineCarbon Isotopes