Ribonucleoproteins, Small NuclearRibonucleoprotein, U1 Small NuclearRibonucleoprotein, U2 Small NuclearsnRNP Core ProteinsSpliceosomesRNA, Small NuclearRibonucleoprotein, U4-U6 Small NuclearRNA SplicingRibonucleoprotein, U5 Small NuclearRNA PrecursorsRibonucleoproteinsRNA-Binding ProteinsRibonucleoprotein, U7 Small NuclearCoiled BodiesHeLa CellsSMN Complex ProteinsRNA Splice SitesMolecular Sequence DataBase SequenceNucleic Acid ConformationNuclear ProteinsAutoantigensCell NucleusIntronsMuscular Atrophy, SpinalPositive Transcriptional Elongation Factor BRNA 3' End ProcessingRNA, Spliced LeaderRNA, FungalProtein BindingPrecipitin TestsRNA CapsFicusinHeterogeneous-Nuclear RibonucleoproteinsAmino Acid SequenceRibonuclease HRNA HelicasesTrans-SplicingSaccharomyces cerevisiae ProteinsSaccharomyces cerevisiaeDEAD Box Protein 20RNA Processing, Post-TranscriptionalGuanosineRNA Cap-Binding ProteinsCleavage And Polyadenylation Specificity FactorCross-Linking ReagentsMutationBinding SitesAnion Exchange ResinsFungal ProteinsExonsmRNA Cleavage and Polyadenylation FactorsN-Terminal Acetyltransferase CDEAD-box RNA HelicasesAlternative SplicingSurvival of Motor Neuron 1 ProteinHeterogeneous-Nuclear Ribonucleoprotein Group A-BSequence Homology, Amino AcidTranscription Elongation, GeneticRNARNA, MessengerCyclic AMP Response Element-Binding ProteinTranscription, GeneticPolyadenylationMixed Connective Tissue DiseaseRNA, Heterogeneous NuclearProtein Structure, TertiaryAutoantibodiesCell ExtractsConserved SequenceNucleic Acid PrecursorsRNA CleavageHeterogeneous-Nuclear Ribonucleoprotein Group F-HRNA, HelminthResins, SyntheticMicrococcal NucleaseConnective Tissue DiseasesGenes, LethalMacromolecular SubstancesOligoribonucleotidesHistonesIntranuclear SpaceRNA Cap AnalogsOocytesPseudouridineSurvival of Motor Neuron 2 ProteinZinc FingersConsensus SequenceGenes, FungalXenopusNerve Tissue ProteinsChromatography, AffinityMolecular WeightDrosophila ProteinsPsoralensModels, BiologicalEndoribonucleasesCyclin-Dependent Kinase 9tat Gene Products, Human Immunodeficiency VirusMethylation