RNA, TransferRibonucleasesNucleic Acid ConformationRibonuclease, PancreaticRibonuclease T1Ribonuclease HtRNA MethyltransferasesRibonuclease PEndoribonucleasesMolecular Sequence DataEscherichia coliAnticodonBase SequenceRNA, Transfer, Amino Acid-SpecificRNA, Transfer, Amino AcylPlacental HormonesAmino Acid SequenceMutant ProteinsRibonuclease IIIRNA, BacterialKineticsRNA, Transfer, SerRNA, Transfer, PheMutationBinding SitesModels, MolecularAmino Acyl-tRNA SynthetasesMutagenesis, Site-DirectedEosinophil-Derived NeurotoxinOligoribonucleotidesRNA, Transfer, GlySubstrate SpecificityRNA, Transfer, MetRNARNA, Transfer, AspRNA, Transfer, ArgRNA, Transfer, TrpBacterial ProteinsTemperatureCloning, MolecularGenetic Complementation TestProtein ConformationProtein BindingRNA, Transfer, GluRNA, Transfer, ValRNA, Transfer, IleExoribonucleasesRNA, CatalyticPhenotypeRNA, Transfer, AlaRNA, Transfer, GlnRNA, Transfer, HisTranscription, GeneticCattleProtein Structure, TertiaryCytidine MonophosphateRNA, MessengerMice, Mutant StrainsPlasmidsRibosomesSequence Homology, Amino AcidEscherichia coli ProteinsRNA, RibosomalPancreasRNA, Transfer, ProRNA Processing, Post-TranscriptionalSuppression, GeneticStructure-Activity RelationshipRNA, FungalCell LineAmino Acid SubstitutionProtein BiosynthesisSequence AlignmentCodonGenes, BacterialGuanosine MonophosphateCatalysisRibonuclease H, Human Immunodeficiency VirusEnzyme StabilityRNA PrecursorsHydrogen-Ion ConcentrationDNA PrimersPoint MutationHistidineElectrophoresis, Polyacrylamide GelAmino AcidsMutagenesis, InsertionalGene DeletionUridineThiouridineHydrolysisProtein DenaturationCrystallography, X-RayRNA, Transfer, ThrGenesSaccharomyces cerevisiae ProteinsEndonucleasesProtein FoldingSaccharomyces cerevisiaeAminoacylation