1,474 results found
    1. Developmental Biology
    2. Chromosomes and Gene Expression

    A global change in RNA polymerase II pausing during the Drosophila midblastula transition

    Kai Chen et al.
    The first zygotic genes are transcribed without RNA polymerase II pausing from a TATA-enriched promoter.
    1. Computational and Systems Biology

    CDK9-dependent RNA polymerase II pausing controls transcription initiation

    Saskia Gressel et al.
    CDK9 inhibition in human cells uncovers that Pol II pause duration regulates the frequency of productive transcription initiation.
    1. Chromosomes and Gene Expression

    Reporter-ChIP-nexus reveals strong contribution of the Drosophila initiator sequence to RNA polymerase pausing

    Wanqing Shao et al.
    Reporter-ChIP-nexus captures paused Pol II on transfected plasmids and shows that pausing stability is influenced by core promoter sequences, especially by the initiator with a G at +2 position.
    1. Chromosomes and Gene Expression

    Condensin controls recruitment of RNA polymerase II to achieve nematode X-chromosome dosage compensation

    William S Kruesi et al.
    C. elegans equalizes the expression of X-chromosome genes between the sexes by reducing the recruitment of RNA polymerase II to promoters of X-linked genes in hermaphrodites, using a chromosome-restructuring complex called condensin.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Architecture and RNA binding of the human negative elongation factor

    Seychelle M Vos et al.
    The structural architecture of the 4-subunit, RNA-binding human negative elongation factor NELF is derived by a combination of X-ray crystallography and protein crosslinking.
    1. Chromosomes and Gene Expression
    2. Microbiology and Infectious Disease

    The primary σ factor in Escherichia coli can access the transcription elongation complex from solution in vivo

    Seth R Goldman et al.
    The sigma subunit of bacterial RNA polymerase, classically known as an initiation factor, can also operate as an elongation factor with effects that vary with growth phase.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    E. coli TraR allosterically regulates transcription initiation by altering RNA polymerase conformation

    James Chen et al.
    Cryo-electron microscopy structures, combined with biochemical experiments, show how the E. coli F element-encoded TraR protein regulates transcription initiation by altering RNA polymerase conformation and conformational heterogeneity.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Bridged filaments of histone-like nucleoid structuring protein pause RNA polymerase and aid termination in bacteria

    Matthew V Kotlajich et al.
    Bridged H-NS filaments inhibit transcript elongation by bacterial RNA polymerase by enhancing backtracking and increasing Rho-dependent termination at a subset of pause sites that are normally poor Rho substrates.
    1. Developmental Biology
    2. Genetics and Genomics

    Establishment of regions of genomic activity during the Drosophila maternal to zygotic transition

    Xiao-Yong Li et al.
    Drosophila melanogaster embryos undergo a dramatic genomic transformation in the hour preceding gastrulation, as thousands of promoters and regulatory regions become biochemically distinct before they become active.
    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 et al.
    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.

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