601 results found
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    MAF1 represses CDKN1A through a Pol III-dependent mechanism

    Yu-Ling Lee, Yuan-Ching Li ... Ming-Ta Hsu
    Pol II-mediated transcription and chromatin looping of CDKN1A are repressed by MAF1 through the regulation of Pol III activity.
    1. Biochemistry and Chemical Biology
    2. Genetics and Genomics

    Genome-wide dynamics of Pol II elongation and its interplay with promoter proximal pausing, chromatin, and exons

    Iris Jonkers, Hojoong Kwak, John T Lis
    The elongation rate of RNA Polymerase II varies greatly between and along genes, as this enzyme accelerates from stable pausing to rapid elongation within genes, and is influenced by CG-content, exons and chromatin.
    1. Chromosomes and Gene Expression
    2. Structural Biology and Molecular Biophysics

    The cryo-EM structure of a 12-subunit variant of RNA polymerase I reveals dissociation of the A49-A34.5 heterodimer and rearrangement of subunit A12.2

    Lucas Tafur, Yashar Sadian ... Christoph W Müller
    Cryo-EM structures of RNA polymerase I reveal considerable 'transformers-like' rearrangements where one subcomplex dissociates and is replaced by one domain of another subunit, possibly as an additional layer of transcriptional control.
    1. Chromosomes and Gene Expression

    The dynamic assembly of distinct RNA polymerase I complexes modulates rDNA transcription

    Eva Torreira, Jaime Alegrio Louro ... Carlos Fernández-Tornero
    Live-cell imaging, genetic analysis and electron cryomicroscopy identify structural motifs involved in the differential assembly of Pol I-Rrn3 complexes and Pol I homodimers in response to nutrient availability.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Transcription elongation is finely tuned by dozens of regulatory factors

    Mary Couvillion, Kevin M Harlen ... L Stirling Churchman
    NET-seq analysis of 41 S. cerevisiae transcription regulatory factors uncovers their differential and opposing effects on Pol II transcription elongation and antisense transcription, revealing that wild-type transcription is balanced by the joint impact of many regulators.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Defective RNA polymerase III is negatively regulated by the SUMO-Ubiquitin-Cdc48 pathway

    Zheng Wang, Catherine Wu ... Tony Hunter
    The SUMO-Ub-Cdc48 pathway is a novel regulatory mechanism of Pol III and a potential therapeutic target for Pol III-related human diseases.
    1. Computational and Systems Biology

    CDK9-dependent RNA polymerase II pausing controls transcription initiation

    Saskia Gressel, Björn Schwalb ... Patrick Cramer
    CDK9 inhibition in human cells uncovers that Pol II pause duration regulates the frequency of productive transcription initiation.
    1. Computational and Systems Biology
    2. Chromosomes and Gene Expression

    RNA-dependent chromatin association of transcription elongation factors and Pol II CTD kinases

    Sofia Battaglia, Michael Lidschreiber ... Patrick Cramer
    In vivo and in vitro elongation factor-RNA interaction data provide a missing link in understanding how processive elongation complexes are formed on active genes and disassembled at the end of genes.
    1. Structural Biology and Molecular Biophysics
    2. Chromosomes and Gene Expression

    Mechanism for priming DNA synthesis by yeast DNA Polymerase α

    Rajika L Perera, Rubben Torella ... Luca Pellegrini
    The details of how the enzyme DNA polymerase α initiates the polymerization of nucleotides in DNA replication, a critical step in the synthesis of new chromosomal DNA, have been revealed in atomic detail.
    1. Chromosomes and Gene Expression

    Identification of Pol IV and RDR2-dependent precursors of 24 nt siRNAs guiding de novo DNA methylation in Arabidopsis

    Todd Blevins, Ram Podicheti ... Craig S Pikaard
    The 24-nucleotide long siRNAs that guide cytosine methylation in Arabidopsis are made by dicing short double-stranded RNAs that are only around 30 nucleotides long.

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