Ribonuclease T1EndoribonucleasesRibonucleasesExoribonucleasesOligoribonucleotidesRibonuclease HRibonuclease, PancreaticRibonuclease PBase SequenceAspergillus oryzaeGuanosine MonophosphateMolecular Sequence DataOligonucleotidesRNA, TransferNucleic Acid ConformationRNA, ViralRNA, BacterialRNA Processing, Post-TranscriptionalRNARNA, CatalyticAmino Acid SequenceSubstrate SpecificityRNA PrecursorsRNA, RibosomalRhizopusRNA, MessengerPolyribonucleotidesEscherichia coliKineticsBinding SitesMutationElectrophoresis, Polyacrylamide GelPolyribonucleotide NucleotidyltransferaseModels, MolecularCatalysisCloning, MolecularGenes, ViralPoly ARNA, Ribosomal, 5SNucleotide MappingKynurenineMolecular WeightRibonucleoproteinsAspergillusPlasmidsEscherichia coli ProteinsTranscription, GeneticHydrolysisRNA-Directed DNA PolymeraseUridineProtein ConformationAdenosine MonophosphateMutagenesis, Site-DirectedNucleic Acid HybridizationLeukemia Virus, MurineRNA, Ribosomal, 23SHydrogen BondingRNA StabilitySequence Homology, Amino AcidChromatography, GelProtein DenaturationStructure-Activity RelationshipProtein BindingRNA CapsTemperaturePhosphorus RadioisotopesGuanosineCrystallography, X-RayDefective VirusesSaccharomyces cerevisiaeAmino AcidsNucleotidesProtein Structure, TertiaryFish ProteinsProtein BiosynthesisMice, Inbred AKRHistidineDNA PrimersRibosomesHIV Reverse TranscriptaseAvian Sarcoma VirusesSepharoseRNA, Double-StrandedPoliovirusHydrogen-Ion ConcentrationGuanineRNA, FungalDNARestriction MappingHeLa CellsSequence AlignmentPhylogenyViral ProteinsMagnetic Resonance SpectroscopySpectrometry, FluorescenceProtein FoldingRNA, Transfer, TyrDNA, Single-StrandedRNA CleavageRecombinant Proteins