2018
Architecture of the U6 snRNP reveals specific recognition of 3′-end processed U6 snRNA
Montemayor E, Didychuk A, Yake A, Sidhu G, Brow D, Butcher S. Architecture of the U6 snRNP reveals specific recognition of 3′-end processed U6 snRNA. Nature Communications 2018, 9: 1749. PMID: 29717126, PMCID: PMC5931518, DOI: 10.1038/s41467-018-04145-4.Peer-Reviewed Original ResearchConceptsU6 small nuclear RNASmall nuclear RNAPre-mRNAU6 snRNPPre-mRNA substratePrecursor messenger RNAProtein-protein contactsC-terminal regionSaccharomyces cerevisiaeHeteroheptameric ringMature mRNAActive siteU6 snRNPsMRNA decayNuclear RNAPost-transcriptionallySpliceosomeLsm2Prp24SnRNPMessenger RNARNAMRNAIntronLSm8The life of U6 small nuclear RNA, from cradle to grave
Didychuk A, Butcher S, Brow D. The life of U6 small nuclear RNA, from cradle to grave. RNA 2018, 24: 437-460. PMID: 29367453, PMCID: PMC5855946, DOI: 10.1261/rna.065136.117.Peer-Reviewed Original ResearchConceptsU6 small nuclear RNASmall nuclear RNAPre-mRNANuclear RNAProcess of RNA splicingCatalyzes intron removalEukaryotic gene expressionPre-mRNA substrateUridine-rich small nuclear RNAsRemoval of intronsPrecursor messenger RNACryo-EM structureSplicing cycleNoncoding transcriptsCatalytic coreProtein partnersRNA splicingIntron removalSplice siteGenetic dataMacromolecular machinesSpliceosomeGene expressionSplicingConformational changes
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 seriesAssemblyPrp24LHP1OrthologsSnRNAStructure and conformational plasticity of the U6 small nuclear ribonucleoprotein core
Montemayor E, Didychuk A, Liao H, Hu P, Brow D, Butcher S. Structure and conformational plasticity of the U6 small nuclear ribonucleoprotein core. Acta Crystallographica Section D, Structural Biology 2017, 73: 1-8. PMID: 28045380, PMCID: PMC5331471, DOI: 10.1107/s2059798316018222.Peer-Reviewed Original ResearchInternal stem-loopRNA recognition motifSmall nuclear ribonucleoproteinU6 internal stem-loopSplicing of precursor messenger RNAU6 small nuclear RNAProtein-RNA interfacesU6 small nuclear ribonucleoproteinsPrecursor messenger RNASmall nuclear RNAGel shift assaysStem-loopRibonucleoprotein complexCrystal structureGenetic dataNuclear ribonucleoproteinNuclear RNAConformational plasticityWild-typePrp24RNASpliceosomeElectrophoretic mobilityMessenger RNARibonucleoprotein
2016
A multi-step model for facilitated unwinding of the yeast U4/U6 RNA duplex
Rodgers M, Didychuk A, Butcher S, Brow D, Hoskins A. A multi-step model for facilitated unwinding of the yeast U4/U6 RNA duplex. Nucleic Acids Research 2016, 44: 10912-10928. PMID: 27484481, PMCID: PMC5159527, DOI: 10.1093/nar/gkw686.Peer-Reviewed Original ResearchConceptsSmall nuclear RNATri-snRNPU4/U6 unwindingU6 small nuclear RNAImpairs yeast growthSpliceosome active siteU4/U6 di-snRNPSmall nuclear ribonucleoproteinTri-snRNP assemblySpliceosome formationStrand invasionDi-snRNPYeast growthNuclear ribonucleoproteinNuclear RNARNA complexResonance energy transferSpliceosomeRNA duplexesForster resonance energy transferConformational rearrangementsDNA oligonucleotidesStem IIUnwindingU4/U6