Nucleic Acid ConformationProtein Structure, SecondaryMolecular Sequence DataCircular DichroismBase SequenceAmino Acid SequenceModels, MolecularRNAProtein ConformationProtein FoldingSequence AlignmentRNA FoldingSequence Analysis, RNAAlgorithmsRNA, RibosomalBase PairingSpectroscopy, Fourier Transform InfraredMagnetic Resonance SpectroscopyThermodynamicsSoftwareProteinsEscherichia coliHydrogen BondingSpectrophotometry, InfraredSequence Analysis, ProteinComputational BiologyProtein DenaturationRNA, BacterialProtein Structure, TertiaryRNA, ViralSequence Homology, Nucleic AcidBinding Sites5' Untranslated RegionsComputer SimulationModels, ChemicalStructure-Activity RelationshipNuclear Magnetic Resonance, BiomolecularSolutionsTrifluoroethanolConserved SequenceNucleic Acid DenaturationBase CompositionRNA, MessengerPhylogenySequence Homology, Amino AcidDatabases, ProteinTemperatureSpectrometry, FluorescenceCloning, MolecularPeptidesProtein BindingMutationProtein BiosynthesisRibonuclease T1Spectrophotometry, UltravioletRNA, CatalyticDNARecombinant ProteinsEvolution, MolecularKineticsCodonViroidsMutagenesis, Site-DirectedNitrogen IsotopesRNA, TransferPeptide FragmentsGuanidineBacterial ProteinsRNA, UntranslatedRibosomesHydrogen-Ion ConcentrationSolventsModels, StructuralSpecies SpecificityRNA StabilityInternetEndoribonucleasesStructural Homology, ProteinAmino AcidsRibonucleasesRegulatory Sequences, Ribonucleic AcidRNA, ProtozoanRNA, Ribosomal, 5SHydrophobic and Hydrophilic InteractionsTranscription, GeneticRNA PrecursorsPlasmidsIntronsAnilino NaphthalenesulfonatesSulfuric Acid EstersRNA, Small NuclearElectrophoresis, Polyacrylamide GelRNA SplicingMolecular StructureInverted Repeat SequencesGenome, ViralTryptophanOligonucleotides3' Untranslated RegionsHot Temperature