234 results found
    1. Chromosomes and Gene Expression

    Asymmetry between the two acidic patches dictates the direction of nucleosome sliding by the ISWI chromatin remodeler

    Robert F Levendosky, Gregory D Bowman
    Unlike Chd1, ISWI remodelers preferentially shift asymmetric nucleosomes toward the side possessing a wild type acidic patch, regardless of DNA lengths flanking the nucleosome.
    1. Chromosomes and Gene Expression
    2. Structural Biology and Molecular Biophysics

    The nucleosomal acidic patch relieves auto-inhibition by the ISWI remodeler SNF2h

    Nathan Gamarra et al.
    Auto-inhibition of ISWI-family ATP-dependent chromatin remodelers is relieved by a conserved feature of the nucleosome.
    1. Chromosomes and Gene Expression

    Chromatin accessibility underlies synthetic lethality of SWI/SNF subunits in ARID1A-mutant cancers

    Timothy W R Kelso et al.
    ARID1A, a subunit of the SWI/SNF chromatin remodeling complex, and its homolog ARID1B function to maintain chromatin accessibility and active histone modifications at enhancers.
    1. Chromosomes and Gene Expression

    The chromatin remodelers RSC and ISW1 display functional and chromatin-based promoter antagonism

    Timothy J Parnell et al.
    A combination of genetics, expression, genomic localization, and genomic nucleosome profiling demonstrates antagonism between two chromatin remodelers that reveal different mechanisms at different promoter architectures.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Concerted regulation of ISWI by an autoinhibitory domain and the H4 N-terminal tail

    Johanna Ludwigsen et al.
    The N-terminal domain of the chromatin remodeler ISWI contains previously uncharacterized conserved motifs that maintain structure, prevent ATP hydrolysis unless nucleosomes are bound, and confer H4-tail sensitivity without directly competing with the H4 tail.
    1. Biochemistry and Chemical Biology

    Stepwise nucleosome translocation by RSC remodeling complexes

    Bryan T Harada et al.
    Single molecule FRET reveals that the SWI/SNF-family remodeling enzyme RSC translocates nucleosomes along the DNA in steps of ~1-2 base pairs in size.
    1. Cancer Biology

    Pancreatic Cell Fate: To be or not to be

    Zhe Zhang, Elisabeth Hessmann
    Chromatin remodeling processes can drive acinar cell fate decisions.
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    1. Biochemistry and Chemical Biology
    2. Cancer Biology

    Targeted degradation of BRD9 reverses oncogenic gene expression in synovial sarcoma

    Gerard L Brien et al.
    BRD9 provides the first actionable therapeutic target in synovial sarcoma tumours that is both biochemically and functionally linked to the SS18-SSX fusion protein which drives disease development.
    1. Cancer Biology

    Arid1a restrains Kras-dependent changes in acinar cell identity

    Geulah Livshits et al.
    Arid1a loss in the pancreas enables an irreversible reprogramming of cell fate that is dependent on both cellular and genetic context.
    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.

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