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

    TGF-β uses a novel mode of receptor activation to phosphorylate SMAD1/5 and induce epithelial-to-mesenchymal transition

    Anassuya Ramachandran et al.
    SMAD1/5 signaling is essential for the full transforming growth factor β (TGF-β)-induced transcriptional program and physiological responses and is induced via a novel receptor activation mechanism, involving two distinct type I receptors.
    1. Developmental Biology
    2. Genetics and Genomics

    Smchd1 is a maternal effect gene required for genomic imprinting

    Iromi Wanigasuriya et al.
    Imprinted gene expression is set up during a critical window of early embryonic development, by the translation of parental imprints by oocyte-supplied Smchd1 into allele-specific gene silencing.
    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.
    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

    The nucleosomal barrier to promoter escape by RNA polymerase II is overcome by the chromatin remodeler Chd1

    Peter J Skene et al.
    The ATP-dependent chromatin remodeler Chd1 controls nucleosome turnover to allow RNA Polymerase to transcribe in vivo.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    ATP-dependent chromatin assembly is functionally distinct from chromatin remodeling

    Sharon E Torigoe et al.
    The Chd1 motor protein performs two functionally distinct ATP-dependent activities, nucleosome assembly and chromatin remodeling, to generate periodic arrays of nucleosomes.
    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. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    The Chd1 chromatin remodeler shifts hexasomes unidirectionally

    Robert F Levendosky et al.
    Oriented hexasomes can be generated using the Widom 601 positioning sequence, which enables straightforward production of nucleosomes with asymmetrically modified H2A/H2B dimers.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    A twist defect mechanism for ATP-dependent translocation of nucleosomal DNA

    Jessica Winger et al.
    Based on its nucleotide-bound state, the Chd1 chromatin remodeler can locally alter DNA twist on the nucleosome, which either pulls in or expels ~1 bp of DNA at the internal SHL2 binding site.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Nucleosome-CHD4 chromatin remodeler structure maps human disease mutations

    Lucas Farnung et al.
    The structure of the chromatin remodeller CHD4 bound to a nucleosome reveals differences to the known Chd1-nucleosome complex and maps cancer mutations.

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