Polypyrimidine Tract-Binding ProteinHeterogeneous-Nuclear RibonucleoproteinsRibonucleoproteinsHeterogeneous-Nuclear Ribonucleoprotein Group F-HRNA-Binding ProteinsRNA, Heterogeneous NuclearHeterogeneous-Nuclear Ribonucleoprotein Group A-BRNA PrecursorsRNA SplicingRibonucleoproteins, Small NuclearHeterogeneous-Nuclear Ribonucleoprotein Group CAlternative SplicingHeLa CellsExonsMolecular Sequence DataBase SequenceEncephalomyocarditis virusIntronsProtein BindingTropomyosinRNA, MessengerCell Nucleus5' Untranslated RegionsBinding SitesHeterogeneous-Nuclear Ribonucleoprotein KAmino Acid SequenceSpliceosomesNucleic Acid ConformationProtein BiosynthesisRibosomesNucleocytoplasmic Transport ProteinsNuclear ProteinssnRNP Core ProteinsRNA, Small NuclearCoiled BodiesCell LineGene Expression RegulationDNA-Binding ProteinsRibonucleoprotein, U1 Small NuclearRibonucleoprotein, U2 Small NuclearSMN Complex ProteinsRibonucleoprotein, U4-U6 Small NuclearDEAD Box Protein 20Electrophoresis, Gel, Two-DimensionalMutationRNARNA Splice SitesRNA, ViralPyrimidinesRibonucleoprotein, U5 Small NuclearNotophthalmus viridescens