RNARNA, Small InterferingRNA, ViralRNA EditingRNA SplicingAmino Acid SequenceMolecular Sequence DataRNA, RibosomalRNA, BacterialModels, MolecularBinding SitesBase SequenceDNA-Directed RNA PolymerasesMutagenesis, Site-DirectedRNA, MessengerRNA VirusesRNA InterferenceRNA, Double-StrandedProtein ConformationProtein BindingMutationProtein Structure, TertiaryRNA, CatalyticSequence Homology, Amino AcidRNA Polymerase IIRNA FoldingEscherichia coliKineticsRNA, FungalNucleic Acid ConformationProtein Structure, SecondaryStructure-Activity RelationshipRNA HelicasesRNA StabilityRNA, TransferRNA, AntisenseRNA Processing, Post-TranscriptionalAmino Acid SubstitutionRNA PrecursorsRecombinant ProteinsSubstrate SpecificityRNA, Small NuclearCysteineRNA, UntranslatedCell LineRNA CapsAmino AcidsSequence Analysis, RNACrystallography, X-RaySequence AlignmentDrug ResiduesPeptide FragmentsConserved SequenceRNA, PlantRNA, ProtozoanDNALysinePeptidesRNA, NeoplasmRNA Ligase (ATP)Pesticide ResiduesCatalysisCloning, MolecularCatalytic DomainBacterial ProteinsHistidineDEAD-box RNA HelicasesMagnetic Resonance SpectroscopyMutagenesisCircular DichroismRNA Polymerase IIIAmino Acid MotifsRecombinant Fusion ProteinsDNA PrimersPlasmidsRNA-Binding ProteinsElectrophoresis, Polyacrylamide GelRNA, NuclearRNA Polymerase IRNA, Ribosomal, 28SRNA, GuidePoint MutationMolecular WeightHeLa CellsAlanineTranscription, GeneticPhosphorylationHydrogen-Ion ConcentrationSaccharomyces cerevisiaeDNA, ComplementaryHydrogen BondingTransfectionTryptophanProtein BiosynthesisSerineProteinsRNA, Ribosomal, 23SProtein FoldingRNA, Ribosomal, 18SArginine