Search results for "Small nuclear RNA"

showing 2 items of 12 documents

Rtp1p Is a Karyopherin-Like Protein Required for RNA Polymerase II Biogenesis

2013

The assembly and nuclear transport of RNA polymerase II (RNA pol II) are processes that require the participation of many auxiliary factors. In a yeast genetic screen, we identified a previously uncharacterized gene, YMR185w (renamed RTP1), which encodes a protein required for the nuclear import of RNA pol II. Using protein affinity purification coupled to mass spectrometry, we identified interactions between Rtp1p and members of the R2TP complex. Rtp1p also interacts, to a different extent, with several RNA pol II subunits. The pattern of interactions is compatible with a role for Rtp1p as an assembly factor that participates in the formation of the Rpb2/Rpb3 subassembly complex and its bi…

Saccharomyces cerevisiae ProteinsActive Transport Cell NucleusRNA polymerase IISaccharomyces cerevisiaeKaryopherinsBiologyGene Expression Regulation FungalTranscriptional regulationRNA polymerase IProtein Interaction MapsMolecular BiologyRNA polymerase II holoenzymeR2TP complexGeneticsNuclear cap-binding protein complexArticlesCell BiologyPhosphoproteinsUp-RegulationCell biologyNuclear Pore Complex Proteinsbiology.proteinRNA Polymerase IITranscription factor II DCarrier ProteinsGene DeletionSmall nuclear RNATranscription Factors
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Chromatin-dependent regulation of RNA polymerases II and III activity throughout the transcription cycle

2015

The particular behaviour of eukaryotic RNA polymerases along different gene regions and amongst distinct gene functional groups is not totally understood. To cast light onto the alternative active or backtracking states of RNA polymerase II, we have quantitatively mapped active RNA polymerases at a high resolution following a new biotin-based genomic run-on (BioGRO) technique. Compared with conventional profiling with chromatin immunoprecipitation, the analysis of the BioGRO profiles in Saccharomyces cerevisiae shows that RNA polymerase II has unique activity profiles at both gene ends, which are highly dependent on positioned nucleosomes. This is the first demonstration of the in vivo infl…

Transcription factoriesSaccharomyces cerevisiae ProteinsTranscription Elongation GeneticTranscription GeneticRNA polymerase II28Saccharomyces cerevisiaeBiology03 medical and health scienceschemistry.chemical_compoundTranscripció genèticaRNA polymeraseGeneticsRNA polymerase IRNA polymerase II holoenzyme9030304 developmental biologyGenetics0303 health sciencesGeneral transcription factorGene regulation Chromatin and Epigenetics030302 biochemistry & molecular biologyRNA Polymerase IIIGenomicsNucleosomesCell biologychemistryTranscription Termination Geneticbiology.proteinRNARNA Polymerase IIGenome FungalTranscription factor II DSmall nuclear RNA
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