2020
The gammaherpesviral TATA-box-binding protein directly interacts with the CTD of host RNA Pol II to direct late gene transcription
Castañeda A, Didychuk A, Louder R, McCollum C, Davis Z, Nogales E, Glaunsinger B. The gammaherpesviral TATA-box-binding protein directly interacts with the CTD of host RNA Pol II to direct late gene transcription. PLOS Pathogens 2020, 16: e1008843. PMID: 32886723, PMCID: PMC7498053, DOI: 10.1371/journal.ppat.1008843.Peer-Reviewed Original ResearchConceptsTATA box-binding proteinRNA polymerase IIN-terminal domainPol IIPolymerase IICellular TATA box binding proteinHost RNA polymerase IIRecruitment of RNA polymerase IIGene transcriptionLate gene transcriptionPol II recruitmentProtein interaction studiesProtein-protein contactsC-terminal domainEukaryotic transcriptionPolymerase recruitmentHuman cytomegalovirusPreinitiation complexHost transcriptionRNA PolLate genesMicroscopy-based imagingKaposi's sarcoma-associated virusTranscriptional activityPromoter recognitionConserved CxnC Motifs in Kaposi’s Sarcoma-Associated Herpesvirus ORF66 Are Required for Viral Late Gene Expression and Are Essential for Its Interaction with ORF34
Didychuk A, Castañeda A, Kushnir L, Huang C, Glaunsinger B. Conserved CxnC Motifs in Kaposi’s Sarcoma-Associated Herpesvirus ORF66 Are Required for Viral Late Gene Expression and Are Essential for Its Interaction with ORF34. Journal Of Virology 2020, 94: 10.1128/jvi.01299-19. PMID: 31578296, PMCID: PMC6955276, DOI: 10.1128/jvi.01299-19.Peer-Reviewed Original ResearchConceptsViral preinitiation complexKaposi's sarcoma-associated herpesvirusC-terminal domainCysteine-rich motifHost transcription machineryPreinitiation complexGene promoterTranscription machinerySarcoma-associated herpesvirusLate genesGene transcriptionViral late gene expressionZinc finger motifsLate gene transcriptionSequence-specific bindingTranscriptional regulatory activityLate gene expressionLate gene promotersInfectious virionsProduction of capsid proteinsRelease of infectious virionsViral replication cycleFinger motifPromoter occupancySequence-specific
2017
Usb1 controls U6 snRNP assembly through evolutionarily divergent cyclic phosphodiesterase activities
Didychuk A, Montemayor E, Carrocci T, DeLaitsch A, Lucarelli S, Westler W, Brow D, Hoskins A, Butcher S. Usb1 controls U6 snRNP assembly through evolutionarily divergent cyclic phosphodiesterase activities. Nature Communications 2017, 8: 497. PMID: 28887445, PMCID: PMC5591277, DOI: 10.1038/s41467-017-00484-w.Peer-Reviewed Original ResearchMeSH KeywordsCatalytic DomainCrystallography, X-RayEvolution, MolecularGenetic VariationHumansModels, MolecularPhosphoric Diester HydrolasesProtein BindingProtein DomainsRibonucleoprotein, U4-U6 Small NuclearRNA, Small NuclearSaccharomyces cerevisiaeSaccharomyces cerevisiae ProteinsSubstrate SpecificityConceptsU6 snRNP assemblySmall nuclear ribonucleoproteinSnRNP assemblyCognate RNA-binding proteinsTerminal 3'-phosphateU6 small nuclear ribonucleoproteinsRNA-binding proteinsAnti-cooperative interactionsCyclic phosphodiesterase activitySpliceosome assemblyU6 RNAHuman orthologNuclear ribonucleoproteinUSB1SpliceosomeYeastProteinPhosphodiesterase activityAntagonist proteinComplex seriesAssemblyPrp24LHP1OrthologsSnRNA