Ribonucleoproteins, Small NuclearSpliceosomesRibonucleoprotein, U2 Small NuclearRibonucleoprotein, U1 Small NuclearRNA, Small NuclearRNA SplicingRibonucleoprotein, U4-U6 Small NuclearsnRNP Core ProteinsRibonucleoprotein, U5 Small NuclearRNA PrecursorsIntronsRNA-Binding ProteinsSMN Complex ProteinsCoiled BodiesRibonucleoproteinsRNA Splice SitesMolecular Sequence DataHeLa CellsBase SequenceNucleic Acid ConformationPseudouridineRibonucleoprotein, U7 Small NuclearDEAD Box Protein 20RNA, Small NucleolarRNA, FungalRNA HelicasesMuscular Atrophy, SpinalConserved SequenceNuclear ProteinsAmino Acid SequenceAutoantigensExonsSurvival of Motor Neuron 1 ProteinSaccharomyces cerevisiaeEvolution, MolecularRNA CapsCell NucleusTrans-SplicingSaccharomyces cerevisiae ProteinsRNA Processing, Post-TranscriptionalAlternative SplicingProtein BindingRNA, Spliced Leader