2019
Quantitative Fluorescence In Situ Hybridization (FISH) and Immunofluorescence (IF) of Specific Gene Products in KSHV-Infected Cells.
Vallery TK, Steitz JA. Quantitative Fluorescence In Situ Hybridization (FISH) and Immunofluorescence (IF) of Specific Gene Products in KSHV-Infected Cells. Journal Of Visualized Experiments 2019 PMID: 31524859, PMCID: PMC6750728, DOI: 10.3791/59697.Peer-Reviewed Original ResearchConceptsRNA FISHSarcoma-associated herpesvirusSpecific RNAViral replication compartmentsSpecific gene productsSitu hybridizationKaposi's sarcoma-associated herpesvirusMultiple cell typesReplication compartmentsGene productsViral genesHost cellsCell typesQuantitative fluorescenceNuclear factoriesFishCell morphologyHuman hostMechanistic insightsSpatiotemporal activityUninfected cellsBehavior of biomoleculesRNAProteinCells
2012
Human spliceosomal protein CWC22 plays a role in coupling splicing to exon junction complex deposition and nonsense-mediated decay
Alexandrov A, Colognori D, Shu MD, Steitz JA. Human spliceosomal protein CWC22 plays a role in coupling splicing to exon junction complex deposition and nonsense-mediated decay. Proceedings Of The National Academy Of Sciences Of The United States Of America 2012, 109: 21313-21318. PMID: 23236153, PMCID: PMC3535618, DOI: 10.1073/pnas.1219725110.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acid SequenceCarrier ProteinsEukaryotic Initiation Factor-4AEukaryotic Initiation Factor-4GExonsGene Knockdown TechniquesHEK293 CellsHeLa CellsHumansMolecular Sequence DataMutationNonsense Mediated mRNA DecayNuclear ProteinsPeptidylprolyl IsomeraseProtein BindingRNA SplicingRNA, MessengerRNA-Binding ProteinsSpliceosomesConceptsExon junction complexEJC depositionMultiprotein exon junction complexNonsense-mediated decay pathwayNonsense-mediated decaySpecific roleEJC assemblyEJC formationComplex eukaryotesDisrupts associationMetazoan mRNAsSpliceosomal proteinsCellular mRNAsHost genesSplicing defectsJunction complexDownstream eventsSplicingNatural substrateDecay pathwaysCWC22Depletion yieldsNMDMutationsMRNA
2011
Human eIF4AIII interacts with an eIF4G-like partner, NOM1, revealing an evolutionarily conserved function outside the exon junction complex
Alexandrov A, Colognori D, Steitz JA. Human eIF4AIII interacts with an eIF4G-like partner, NOM1, revealing an evolutionarily conserved function outside the exon junction complex. Genes & Development 2011, 25: 1078-1090. PMID: 21576267, PMCID: PMC3093123, DOI: 10.1101/gad.2045411.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acid SequenceAnimalsDEAD-box RNA HelicasesEukaryotic Initiation Factor-4AEukaryotic Initiation Factor-4GEvolution, MolecularExonsGene DeletionGenetic Complementation TestHumansModels, MolecularMolecular Sequence DataMutationNuclear ProteinsPhenotypeProtein Structure, TertiaryRNA, Ribosomal, 18SRNA-Binding ProteinsSaccharomyces cerevisiaeSaccharomyces cerevisiae ProteinsSequence AlignmentConceptsExon junction complexEIF4GJunction complexDEAD-box helicasePre-rRNA processingDirect physical interactionEIF4G complexExtragenic suppressorsBiogenesis defectsLethal phenotypeGrowth defectTranslation initiationHuman orthologEIF4AIIISaccharomyces cerevisiaeHuman cellsNOM1Physical interactionComplex actsG complexX-ray structureMutationsResiduesComplexesOrthologs
2009
Drosophila hnRNP A1 homologs Hrp36/Hrp38 enhance U2-type versus U12-type splicing to regulate alternative splicing of the prospero twintron
Borah S, Wong AC, Steitz JA. Drosophila hnRNP A1 homologs Hrp36/Hrp38 enhance U2-type versus U12-type splicing to regulate alternative splicing of the prospero twintron. Proceedings Of The National Academy Of Sciences Of The United States Of America 2009, 106: 2577-2582. PMID: 19196985, PMCID: PMC2636732, DOI: 10.1073/pnas.0812826106.Peer-Reviewed Original ResearchConceptsU12-type splicingPurine-rich elementAlternative splicingMRNA undergoes alternative splicingTranscription factor ProsperoU12-type spliceosomeHeterogeneous nuclear ribonucleoprotein A1Undergoes alternative splicingU2-type spliceosomeDrosophila homologDrosophila embryogenesisS2 cellsHnRNP A1TwintronSplicingNeuronal differentiationHrp38SpliceosomeIntronsEmbryogenesisProteinAxonal outgrowthHrp36HnRNPsHomologSubnuclear compartmentalization of transiently expressed polyadenylated pri-microRNAs: Processing at transcription sites or accumulation in SC35 foci
Pawlicki JM, Steitz JA. Subnuclear compartmentalization of transiently expressed polyadenylated pri-microRNAs: Processing at transcription sites or accumulation in SC35 foci. Cell Cycle 2009, 8: 345-356. PMID: 19177009, PMCID: PMC3004524, DOI: 10.4161/cc.8.3.7494.Peer-Reviewed Original ResearchConceptsPri-miRNA processingPri-miRNAsTranscription sitesPrimary miRNA transcriptsPri-miRNA transcriptsPre-miRNA hairpinsRNA polymerase IIASF/SF2Splicing factor SC35Target messenger RNAsNumber of proteinsMiRNA biogenesisMiRNA transcriptsNuclear organizationMRNA metabolismPolymerase IINuclear fociProlyl isomeraseFactor SC35Subnuclear compartmentalizationPri-microRNAsMammalian cellsSC35 domainsGene expressionSC35
2008
Primary microRNA transcript retention at sites of transcription leads to enhanced microRNA production
Pawlicki JM, Steitz JA. Primary microRNA transcript retention at sites of transcription leads to enhanced microRNA production. Journal Of Cell Biology 2008, 182: 61-76. PMID: 18625843, PMCID: PMC2447899, DOI: 10.1083/jcb.200803111.Peer-Reviewed Original ResearchMeSH KeywordsChromatinExonsHeLa CellsHumansIntronsMicroRNAsMRNA Cleavage and Polyadenylation FactorsNuclear ProteinsPolyadenylationRegulatory Sequences, Nucleic AcidRibonucleoproteinsRNA Polymerase IIIRNA Processing, Post-TranscriptionalRNA TransportRNA, MessengerRNA, ViralSequence DeletionSerine-Arginine Splicing FactorsSubcellular FractionsTranscription, GeneticConceptsPri-miRNAsTranscription sitesEndogenous pri-miRNAsPrimary miRNA transcriptsPri-miRNA processingSplicing factor SC35Viral RNA elementsHigh nuclear levelsMiRNA biogenesisMiRNA transcriptionMiRNA transcriptsNuclear stepsPrecursor miRNAsNuclear fociFactor SC35MicroRNA productionRNA elementsGene expressionTranscription leadNuclear fractionNuclear levelsTranscriptionMiRNAsProcessing signalsBiogenesis
2005
Symplekin and multiple other polyadenylation factors participate in 3′-end maturation of histone mRNAs
Kolev NG, Steitz JA. Symplekin and multiple other polyadenylation factors participate in 3′-end maturation of histone mRNAs. Genes & Development 2005, 19: 2583-2592. PMID: 16230528, PMCID: PMC1276732, DOI: 10.1101/gad.1371105.Peer-Reviewed Original ResearchConceptsTail elongationU7 small nuclear ribonucleoproteinCommon molecular machineryMammalian cell extractsCleavage stimulation factorPolyadenylation specificity factorSmall nuclear ribonucleoproteinMolecular machineryHistone mRNAProtein complexesMRNA cleavageSpecificity factorPolyadenylation factorsTranslational activationNuclear ribonucleoproteinSymplekinReconstitution experimentsCell extractsHeat-labile factorMessenger RNAHistonesMRNAStimulation factorSubunitsCytoplasmic
2004
A molecular link between SR protein dephosphorylation and mRNA export
Huang Y, Yario TA, Steitz JA. A molecular link between SR protein dephosphorylation and mRNA export. Proceedings Of The National Academy Of Sciences Of The United States Of America 2004, 101: 9666-9670. PMID: 15210956, PMCID: PMC470732, DOI: 10.1073/pnas.0403533101.Peer-Reviewed Original ResearchConceptsNuclear export factor 1Multiple RNA-binding proteinsMRNA-protein complexesSR protein dephosphorylationMRNA nuclear exportASF/SF2RNA-binding proteinMRNA exportProtein dephosphorylationProtein complexesProtein adaptersNuclear exportSpliced mRNAPhosphorylation stateMolecular linkFactor 1MRNAHigh affinityMetazoansDephosphorylationExportComplexesSerineAdapterProteinAn Intronic Enhancer Regulates Splicing of the Twintron of Drosophila melanogaster prospero Pre-mRNA by Two Different Spliceosomes
Scamborova P, Wong A, Steitz JA. An Intronic Enhancer Regulates Splicing of the Twintron of Drosophila melanogaster prospero Pre-mRNA by Two Different Spliceosomes. Molecular And Cellular Biology 2004, 24: 1855-1869. PMID: 14966268, PMCID: PMC350559, DOI: 10.1128/mcb.24.5.1855-1869.2004.Peer-Reviewed Original ResearchConceptsPurine-rich elementSplicing pathwaySplice siteU12-type spliceosomeU12-type splicingVitro splicing systemForms of mRNAAlternative splicingEarly embryogenesisKc cellsIntron sequencesPre-mRNASystematic deletionIntronic enhancerSplicingSequence requirementsIntron regionsEnhancer elementsNucleotides downstreamMolecular mechanismsTwintronSpliceosomeSplicing systemMutation analysisPathway
2002
Site‐specific cross‐linking analyses reveal an asymmetric protein distribution for a box C/D snoRNP
Cahill NM, Friend K, Speckmann W, Li Z, Terns RM, Terns MP, Steitz JA. Site‐specific cross‐linking analyses reveal an asymmetric protein distribution for a box C/D snoRNP. The EMBO Journal 2002, 21: 3816-3828. PMID: 12110593, PMCID: PMC126121, DOI: 10.1093/emboj/cdf376.Peer-Reviewed Original ResearchConceptsBox C/D snoRNPsD snoRNPsC-boxBox C/D classSite-specific cross-linking analysisBox C/D small nucleolar ribonucleoproteinsBox C/DAsymmetric protein distributionSmall nucleolar ribonucleoproteinSmall nucleolar RNAsXenopus oocyte nucleusCross-linking analysisNucleolar RNAsNucleolar ribonucleoproteinD motifBox DMutational analysisOocyte nucleusGuide sequenceWidespread modificationProtein distributionFibrillarinFunctional rescueCore proteinSnoRNPsThe Divergent U12-Type Spliceosome Is Required for Pre-mRNA Splicing and Is Essential for Development in Drosophila
Otake LR, Scamborova P, Hashimoto C, Steitz JA. The Divergent U12-Type Spliceosome Is Required for Pre-mRNA Splicing and Is Essential for Development in Drosophila. Molecular Cell 2002, 9: 439-446. PMID: 11864616, DOI: 10.1016/s1097-2765(02)00441-0.Peer-Reviewed Original ResearchMeSH KeywordsAlternative SplicingAnimalsAnimals, Genetically ModifiedBase SequenceDrosophila melanogasterDrosophila ProteinsGenes, LethalIntronsLarvaMolecular Sequence DataMutagenesis, InsertionalNerve Tissue ProteinsNuclear ProteinsNucleic Acid ConformationProtein IsoformsRibonucleoprotein, U4-U6 Small NuclearRibonucleoproteins, Small NuclearRNA PrecursorsRNA SplicingRNA, Small NuclearSequence AlignmentSequence Homology, Nucleic AcidSpliceosomesTranscription FactorsTransgenesConceptsU12-type spliceosomeThird instar larvalU12-type intronsPre-mRNA splicingU4atac/U6atacMetazoan organismsHomeodomain proteinsU5 snRNPsDrosophila melanogasterU12 spliceosomeMRNA intronsU12 snRNASingle locusU6atacInstar larvalSpliceosomeEmbryonic stagesCNS developmentIntronsMinor classU12DrosophilaMelanogasterVertebratesSnRNPs
2001
Delineation of mRNA Export Pathways by the Use of Cell-Permeable Peptides
Gallouzi I, Steitz J. Delineation of mRNA Export Pathways by the Use of Cell-Permeable Peptides. Science 2001, 294: 1895-1901. PMID: 11729309, DOI: 10.1126/science.1064693.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acid SequenceAnimalsAntennapedia Homeodomain ProteinAntigens, SurfaceBiological TransportCell LineCell Membrane PermeabilityCell NucleusCytoplasmELAV ProteinsELAV-Like Protein 1Genes, fosHeat-Shock ResponseHomeodomain ProteinsHumansKaryopherinsMolecular Sequence DataNeuropeptidesNuclear ProteinsPeptide FragmentsPhosphoproteinsProtein BindingProtein Structure, TertiaryReceptors, Cytoplasmic and NuclearRegulatory Sequences, Nucleic AcidReproducibility of ResultsRNA StabilityRNA-Binding ProteinsRNA, MessengerTetrahydrofolate DehydrogenaseTranscription FactorsConceptsNuclear export signalAU-rich elementsMessenger RNAsAdapter proteinCell-permeable peptideLeucine-rich nuclear export signalReceptor proteinMRNA export pathwayNuclear pore complexExport receptor CRM1Overall cellular distributionSitu hybridization experimentsMRNA exportExport signalNucleocytoplasmic shuttlingPore complexExport pathwayHybridization experimentsProtein ligandsCellular distributionProteinProtein ligands mediate the CRM1-dependent export of HuR in response to heat shock.
Gallouzi IE, Brennan CM, Steitz JA. Protein ligands mediate the CRM1-dependent export of HuR in response to heat shock. RNA 2001, 7: 1348-61. PMID: 11565755, PMCID: PMC1370177, DOI: 10.1017/s1355838201016089.Peer-Reviewed Original ResearchMeSH KeywordsActive Transport, Cell NucleusAntigens, SurfaceCarrier ProteinsCytoplasmELAV ProteinsELAV-Like Protein 1Fatty Acids, UnsaturatedHeat-Shock ResponseHeLa CellsHumansKaryopherinsLigandsNeuropeptidesNuclear ProteinsPhosphoproteinsReceptors, Cytoplasmic and NuclearRNA, MessengerRNA-Binding ProteinsConceptsAU-rich elementsNuclear exportHeat shockMessenger RNANuclear export factor CRM1Protein ligandsInhibitor of CRM1Export factor CRM1CRM1-dependent exportMRNA nuclear exportRNA-binding proteinProtein-protein interactionsRapid mRNA turnoverEarly response genesAssociation of HuRHeat shock inducesCytoplasmic fociHnRNP complexesExport pathwayMRNA turnoverLeptomycin BCoimmunoprecipitation experimentsCytoplasmic interactionsNES domainResponse genesSplicing Factors SRp20 and 9G8 Promote the Nucleocytoplasmic Export of mRNA
Huang Y, Steitz J. Splicing Factors SRp20 and 9G8 Promote the Nucleocytoplasmic Export of mRNA. Molecular Cell 2001, 7: 899-905. PMID: 11336712, DOI: 10.1016/s1097-2765(01)00233-7.Peer-Reviewed Original Research
2000
Protein Ligands to Hur Modulate Its Interaction with Target Mrnas in Vivo
Brennan C, Gallouzi I, Steitz J. Protein Ligands to Hur Modulate Its Interaction with Target Mrnas in Vivo. Journal Of Cell Biology 2000, 151: 1-14. PMID: 11018049, PMCID: PMC2189805, DOI: 10.1083/jcb.151.1.1.Peer-Reviewed Original ResearchMeSH KeywordsActive Transport, Cell NucleusAmino Acid SequenceAntigens, SurfaceBinding SitesCarrier ProteinsChromatography, AffinityCytoplasmELAV ProteinsELAV-Like Protein 1Fatty Acids, UnsaturatedHeLa CellsHumansKaryopherinsLigandsMolecular Sequence DataNeuropeptidesNuclear ProteinsPhosphoprotein PhosphatasesPhosphoproteinsProtein BindingProtein Phosphatase 2Protein TransportReceptors, Cytoplasmic and NuclearRNA StabilityRNA-Binding ProteinsRNA, MessengerSequence Analysis, ProteinConceptsAU-rich elementsTarget mRNAsStability of ARENuclear export factor CRM1Protein phosphatase 2A inhibitorExport factor CRM1Phosphatase 2A inhibitorCOOH-terminal tailInhibition of CRM1Leucine-rich repeatsC-fos geneMammalian proteinsLeptomycin BELAV familyCellular mRNAsNuclear retentionSecond motifHuR associationUntranslated regionBind regionsCytoplasmic distributionPp32Protein ligandsCRM1Terminal region
1995
Decreasing the distance between the two conserved sequence elements of histone pre-messenger RNA interferes with 3' processing in vitro.
Cho DC, Scharl EC, Steitz JA. Decreasing the distance between the two conserved sequence elements of histone pre-messenger RNA interferes with 3' processing in vitro. RNA 1995, 1: 905-14. PMID: 8548655, PMCID: PMC1369339.Peer-Reviewed Original ResearchAnimalsBase SequenceBinding SitesConserved SequenceHistonesMolecular Sequence DataMRNA Cleavage and Polyadenylation FactorsNuclear ProteinsNucleic Acid ConformationRibonucleoproteins, Small NuclearRNA PrecursorsRNA Processing, Post-TranscriptionalRNA-Binding ProteinsRNA, MessengerSequence DeletionSubstrate SpecificityTranscription, Genetic
1994
SR proteins can compensate for the loss of U1 snRNP functions in vitro.
Tarn WY, Steitz JA. SR proteins can compensate for the loss of U1 snRNP functions in vitro. Genes & Development 1994, 8: 2704-2717. PMID: 7958927, DOI: 10.1101/gad.8.22.2704.Peer-Reviewed Original ResearchConceptsSR proteinsSplice site recognitionSplice siteU1 snRNPsU1 snRNP functionsEssential splicing factorPre-mRNA substrateSplice site choiceNative gel analysisSplice site selectionMethyl oligoribonucleotideCross-linking studiesSnRNP functionSplicing factorsU1 snRNPU1 snRNASite recognitionSite choiceGel analysisRescue splicingProteinSplicing systemIntronsSnRNPs
1992
Viral small nuclear ribonucleoproteins bind a protein implicated in messenger RNA destabilization.
Myer VE, Lee SI, Steitz JA. Viral small nuclear ribonucleoproteins bind a protein implicated in messenger RNA destabilization. Proceedings Of The National Academy Of Sciences Of The United States Of America 1992, 89: 1296-1300. PMID: 1311093, PMCID: PMC48436, DOI: 10.1073/pnas.89.4.1296.Peer-Reviewed Original ResearchConceptsSmall nuclear ribonucleoproteinNuclear ribonucleoproteinCertain cellular mRNAsMessenger RNA destabilizationHerpesvirus saimiriNumber of protooncogenesHSUR 1HSURs 1Rapid degradationSmall RNAsU RNARNA destabilizationCellular mRNAsMarmoset T lymphocytesAbundant viral transcriptHost proteinsUntranslated regionAUUUA motifsExhibit sequencesViral transcriptsPrimate virusesViral transformationUnstable messagesProteinRibonucleoprotein