Nuclear Localization SignalsCell Nucleusalpha KaryopherinsActive Transport, Cell NucleusAmino Acid SequenceMolecular Sequence DataKaryopherinsbeta KaryopherinsCytoplasmProtein Sorting SignalsNuclear Export SignalsNuclear ProteinsRecombinant Fusion ProteinsHeLa CellsProtein TransportGreen Fluorescent ProteinsProtein Structure, TertiaryCOS CellsCell LineLuminescent Proteinsran GTP-Binding ProteinBase SequenceSequence DeletionSequence Homology, Amino AcidMutationTransfectionDNA-Binding ProteinsSubcellular FractionsProtein BindingCell NucleolusNucleoplasminsSignal TransductionCell CompartmentationTranscription FactorsCercopithecus aethiopsBiological TransportMicroscopy, FluorescenceAmino Acid MotifsCloning, MolecularBinding SitesMutagenesis, Site-DirectedNuclear EnvelopeRNA-Binding ProteinsMicroscopy, ConfocalAmino Acids, BasicFluorescent Antibody TechniquePhosphorylationZinc FingersDNA, ComplementaryPlasmidsSequence AlignmentRecombinant ProteinsViral ProteinsFluorescent Antibody Technique, IndirectCarrier Proteinsbeta-GalactosidaseConserved SequenceTwo-Hybrid System TechniquesNucleocytoplasmic Transport ProteinsRNA, MessengerDNA PrimersBlotting, WesternReceptors, Cytoplasmic and NuclearSaccharomyces cerevisiae ProteinsSaccharomyces cerevisiae3T3 CellsTranscription, GeneticCells, CulturedProtein IsoformsNuclear PoreMutagenesisGenes, ReporterPhosphoproteinsAntigens, Polyomavirus TransformingTranscriptional ActivationTrans-ActivatorsNIH 3T3 CellsFatty Acids, UnsaturatedN-Acylneuraminate CytidylyltransferaseImmunohistochemistryModels, BiologicalAT-Hook MotifsNuclear Pore Complex ProteinsRepressor ProteinsFungal ProteinsNuclear MatrixCell Cycle ProteinsGene Expression RegulationAlternative SplicingDNAImmunoprecipitationDimerizationPlant ProteinsDrosophila ProteinsPoint MutationCell CycleGene Products, vprImmunoblottingTumor Cells, CulturedProteins