IntronsRNA Splice SitesRNA SplicingRNA PrecursorsExonsRibonucleoproteins, Small NuclearBase SequenceAlternative SplicingMolecular Sequence DataRibonucleoproteinsSpliceosomesRNA, Small NuclearAmino Acid SequenceRibonucleoprotein, U1 Small NuclearRNA, MessengerMutationRibonucleoprotein, U2 Small NuclearBinding SitesCloning, MolecularNucleic Acid ConformationSequence Homology, Nucleic AcidHeLa CellsTranscription, GeneticConsensus SequenceSequence AlignmentSequence Analysis, DNAConserved SequenceDNA Mutational AnalysisPolymerase Chain ReactionRNA-Binding ProteinsDNA, ComplementaryModels, GeneticDNARibonucleoprotein, U5 Small NuclearSequence Homology, Amino AcidNucleic Acid PrecursorsNuclear ProteinsRNAPhylogenyProtein IsoformsDNA PrimersEvolution, MolecularRestriction MappingRNA, FungalHeterogeneous-Nuclear Ribonucleoprotein Group A-BPlasmidsRegulatory Sequences, Nucleic AcidGenesHeterogeneous-Nuclear Ribonucleoprotein Group F-HRibonucleoprotein, U4-U6 Small NuclearCell LineOpen Reading FramesSubstrate SpecificityTrans-SplicingPoint MutationRNA, ViralProtein BindingIsomerasesPromoter Regions, GeneticHeterogeneous-Nuclear RibonucleoproteinsSaccharomyces cerevisiaeTransfectionRepetitive Sequences, Nucleic AcidMutagenesis, Site-DirectedRNA, CatalyticOligodeoxyribonucleotides5' Untranslated RegionsEscherichia coliBase CompositionPedigreeGlobinsProtein Disulfide-IsomerasesDNA-Binding ProteinsSequence DeletionDNA Transposable ElementsTranscription FactorsMutagenesisKineticsReverse Transcriptase Polymerase Chain ReactionProtein Structure, TertiaryCodon, NonsenseRecombinant ProteinsChromosome MappingFrameshift MutationRNA Processing, Post-TranscriptionalCell NucleusDatabases, Nucleic AcidRegulatory Sequences, Ribonucleic AcidChickensGenetic VariationEnhancer Elements, GeneticTetrahymenaBlotting, SouthernSilencer Elements, TranscriptionalComputational BiologyModels, MolecularThioredoxinsBase PairingExpressed Sequence TagsGenomic Library