2011
Posttranscriptional activation of gene expression in Xenopus laevis oocytes by microRNA–protein complexes (microRNPs)
Mortensen RD, Serra M, Steitz JA, Vasudevan S. Posttranscriptional activation of gene expression in Xenopus laevis oocytes by microRNA–protein complexes (microRNPs). Proceedings Of The National Academy Of Sciences Of The United States Of America 2011, 108: 8281-8286. PMID: 21536868, PMCID: PMC3100953, DOI: 10.1073/pnas.1105401108.Peer-Reviewed Original ResearchConceptsMicroRNA–protein complexesProtein kinase AIIXenopus laevis oocytesImmature Xenopus laevis oocytesGene expression activationMammalian cell linesLaevis oocytesHuman Ago2Target reporterMammalian cellsExpression activationMyt1 kinaseGene expressionPosttranscriptional activationRegulated expressionSpecific mRNAsPhysiological relevanceQuiescent cellsMicroRNAsOocyte stateCell linesOocytesReporterCAMP levelsExpression
2008
Minor-class splicing occurs in the nucleus of the Xenopus oocyte
Friend K, Kolev NG, Shu MD, Steitz JA. Minor-class splicing occurs in the nucleus of the Xenopus oocyte. RNA 2008, 14: 1459-1462. PMID: 18567814, PMCID: PMC2491479, DOI: 10.1261/rna.1119708.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsCell NucleusOocytesRibonucleoproteins, Small NuclearRNA SplicingRNA, Small NuclearSpliceosomesXenopus laevisConceptsSmall nuclear ribonucleoproteinMinor class intronsU12-type splicingXenopus oocytesU12-dependent intronsNuclear envelope breakdownCertain eukaryotesMinor spliceosomeVertebrate cellsSplicing substrateNuclear compartmentNuclear ribonucleoproteinRNA intronsAccurate splicingEnvelope breakdownSplicingIntronsCytoplasmOocytesEukaryotesSpliceosomeMeiosisRibonucleoproteinNucleusSmall fraction
2007
U2 snRNP Binds Intronless Histone Pre-mRNAs to Facilitate U7-snRNP-Dependent 3′ End Formation
Friend K, Lovejoy AF, Steitz JA. U2 snRNP Binds Intronless Histone Pre-mRNAs to Facilitate U7-snRNP-Dependent 3′ End Formation. Molecular Cell 2007, 28: 240-252. PMID: 17964263, PMCID: PMC2149891, DOI: 10.1016/j.molcel.2007.09.026.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBase SequenceCell NucleusDEAD-box RNA HelicasesHeLa CellsHistonesHumansIntronsMiceModels, MolecularOocytesProtein ConformationRibonucleoprotein, U2 Small NuclearRibonucleoprotein, U7 Small NuclearRibonucleoproteins, Small NuclearRNA 3' End ProcessingRNA PrecursorsRNA-Binding ProteinsRNA, MessengerTime FactorsXenopus laevis
2006
Epstein-Barr virus noncoding RNAs are confined to the nucleus, whereas their partner, the human La protein, undergoes nucleocytoplasmic shuttling
Fok V, Friend K, Steitz JA. Epstein-Barr virus noncoding RNAs are confined to the nucleus, whereas their partner, the human La protein, undergoes nucleocytoplasmic shuttling. Journal Of Cell Biology 2006, 173: 319-325. PMID: 16682524, PMCID: PMC2063832, DOI: 10.1083/jcb.200601026.Peer-Reviewed Original ResearchMeSH KeywordsActive Transport, Cell NucleusAnimalsAntibiotics, AntineoplasticAutoantigensCell LineCell Line, TumorCell NucleusDactinomycinFatty Acids, UnsaturatedFemaleHeLa CellsHerpesvirus 4, HumanHumansKaryopherinsMiceNIH 3T3 CellsOocytesProtein BindingRibonucleoproteinsRNA TransportRNA, UntranslatedRNA, ViralXenopus laevisMetazoan oocyte and early embryo development program: a progression through translation regulatory cascades
Vasudevan S, Seli E, Steitz JA. Metazoan oocyte and early embryo development program: a progression through translation regulatory cascades. Genes & Development 2006, 20: 138-146. PMID: 16418480, DOI: 10.1101/gad.1398906.Peer-Reviewed Original ResearchAnimalsCarrier ProteinsCell Cycle ProteinsCytoplasmFemaleGene Expression Regulation, DevelopmentalHumansMaleModels, GeneticMRNA Cleavage and Polyadenylation FactorsOocytesPoly(A)-Binding ProteinsPolyadenylationProtein BiosynthesisRNA, Messenger, StoredRNA-Binding ProteinsTranscription FactorsXenopus laevisXenopus Proteins
2005
Molecular basis for RNA kink-turn recognition by the h15.5K small RNP protein
Szewczak LB, Gabrielsen JS, Degregorio SJ, Strobel SA, Steitz JA. Molecular basis for RNA kink-turn recognition by the h15.5K small RNP protein. RNA 2005, 11: 1407-1419. PMID: 16120832, PMCID: PMC1370824, DOI: 10.1261/rna.2830905.Peer-Reviewed Original ResearchConceptsMolecular basisRNA-protein complexesMobility shift assaysKink-turn motifPotential binding sitesNucleotide analog interference mappingSmall nucleolarSnoRNP assemblyRNA-RNA contactsRNP proteinsShift assaysSnoRNAsBackbone atomsBinding sitesPreferential bindingProteinEnergetic contributionsInterference mappingMinor interactionsStructural contextPotential sitesNucleolarSitesRNAMotif
2001
Internal Modification of U2 Small Nuclear (Snrna) Occurs in Nucleoli of Xenopus Oocytes
Yu Y, Shu M, Narayanan A, Terns R, Terns M, Steitz J. Internal Modification of U2 Small Nuclear (Snrna) Occurs in Nucleoli of Xenopus Oocytes. Journal Of Cell Biology 2001, 152: 1279-1288. PMID: 11257127, PMCID: PMC2199211, DOI: 10.1083/jcb.152.6.1279.Peer-Reviewed Original ResearchConceptsNucleolar localizationCajal bodiesU2 RNAInternal modificationSmall nuclearSm binding siteNucleolar localization signalSmall nucleolar RNAsXenopus oocytesCytoplasm of oocytesU2 small nuclearGuanosine capLocalization signalNucleolar RNAsRNAs showSubcellular sitesIntranuclear localizationIsolated nucleiRNABinding sitesNucleoliOocytesNucleotidesCytoplasmU2
1998
Modification of U6 Spliceosomal RNA Is Guided by Other Small RNAs
Tycowski K, You Z, Graham P, Steitz J. Modification of U6 Spliceosomal RNA Is Guided by Other Small RNAs. Molecular Cell 1998, 2: 629-638. PMID: 9844635, DOI: 10.1016/s1097-2765(00)80161-6.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBase SequenceCell FractionationCell LineCell NucleolusChromosomal Proteins, Non-HistoneDimerizationHeLa CellsHumansMethylationMiceMolecular Sequence DataNucleic Acid ConformationOligodeoxyribonucleotides, AntisenseOocytesPrecipitin TestsRibonuclease HRNA, Ribosomal, 28SRNA, Small NuclearSpliceosomesXenopus laevis
1988
Correct in vivo splicing of the mouse immunoglobulin kappa light-chain pre-mRNA is dependent on 5' splice-site position even in the absence of transcription.
Kedes DH, Steitz JA. Correct in vivo splicing of the mouse immunoglobulin kappa light-chain pre-mRNA is dependent on 5' splice-site position even in the absence of transcription. Genes & Development 1988, 2: 1448-1459. PMID: 2463211, DOI: 10.1101/gad.2.11.1448.Peer-Reviewed Original Research