583 results found
    1. Chromosomes and Gene Expression

    Nucleosomes impede Cas9 access to DNA in vivo and in vitro

    Max A Horlbeck et al.
    Nucleosomes provide a direct and profound block to the activity of the CRISPR effector protein Cas9, suggesting future sophisticated design rules for CRISPR targeting.
    1. Chromosomes and Gene Expression
    2. Structural Biology and Molecular Biophysics

    Structure of the chromatin remodelling enzyme Chd1 bound to a ubiquitinylated nucleosome

    Ramasubramanian Sundaramoorthy et al.
    The unwrapping two turns of DNA on Chd1-bound nucleosomes cause the histone H3 tail and ubiquitin to be re-positioned.
    1. Chromosomes and Gene Expression

    CTCF confers local nucleosome resiliency after DNA replication and during mitosis

    Nick Owens et al.
    In contrast to other transcription factors, CTCF and Esrrb rapidly regain binding after replication and remain bound to their targets during mitosis, preserving local nucleosome organization throughout the cell cycle.
    1. Chromosomes and Gene Expression
    2. Plant Biology

    Arabidopsis FORGETTER1 mediates stress-induced chromatin memory through nucleosome remodeling

    Krzysztof Brzezinka et al.
    Environmentally-mediated gene induction is extended beyond the duration of an external cue by sustaining a nucleosome-depleted chromatin structure.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Heterochromatin assembly by interrupted Sir3 bridges across neighboring nucleosomes

    Reza Behrouzi et al.
    Cooperative association of a histone-binding complex with pairs of appropriately modified nucleosomes, which form fundamental units of binding, mediates selective heterochromatin assembly and spreading.
    1. Chromosomes and Gene Expression
    2. Plant Biology

    DDM1 and Lsh remodelers allow methylation of DNA wrapped in nucleosomes

    David B Lyons, Daniel Zilberman
    Nucleosomes and linker histones block eukaryotic cytosine methylation.
    1. Computational and Systems Biology
    2. Genetics and Genomics

    A computational approach to map nucleosome positions and alternative chromatin states with base pair resolution

    Xu Zhou et al.
    Computational analysis of MNase-seq data reveals that alternatively positioned nucleosomes are prevalent in both yeast and human cells and create significant heterogeneity within cell populations.
    1. Chromosomes and Gene Expression

    The nucleosome DNA entry-exit site is important for transcription termination and prevention of pervasive transcription

    A Elizabeth Hildreth et al.
    Disruption of the nucleosome DNA entry-exit site causes readthrough transcription of terminators, decreased nucleosome occupancy, and pervasive noncoding transcription, demonstrating this nucleosomal region protects the genome against inappropriate transcription.
    1. Chromosomes and Gene Expression
    2. Structural Biology and Molecular Biophysics

    Cryo-EM structures of remodeler-nucleosome intermediates suggest allosteric control through the nucleosome

    Jean Paul Armache et al.
    Cryo-EM structures capture different conformational states of chromatin remodeler-nucleosome complexes.
    1. Structural Biology and Molecular Biophysics
    2. Chromosomes and Gene Expression

    Structural reorganization of the chromatin remodeling enzyme Chd1 upon engagement with nucleosomes

    Ramasubramanian Sundaramoorthy et al.
    Structural models of the chromatin remodeling enzyme Chd1 in solution and when bound to chromatin indicate that conformational changes to both the enzyme and the nucleosome occur upon nucleotide dependent engagement.

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