219 results found
    1. Structural Biology and Molecular Biophysics

    Importin-9 wraps around the H2A-H2B core to act as nuclear importer and histone chaperone

    Abhilash Padavannil et al.
    In an unusual complex that is not dissociated by RanGTP alone, Importin-9 sequesters the H2A-H2B core from promiscuous interactions.
    1. Structural Biology and Molecular Biophysics
    2. Chromosomes and Gene Expression

    The Cac1 subunit of histone chaperone CAF-1 organizes CAF-1-H3/H4 architecture and tetramerizes histones

    Wallace H Liu et al.
    Biophysical and biochemical approaches reveal new insights into the architecture of CAF-1 and the unique mechanism by which CAF-1 tetramerizes histones H3/H4.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    DNA-mediated association of two histone-bound complexes of yeast Chromatin Assembly Factor-1 (CAF-1) drives tetrasome assembly in the wake of DNA replication

    Francesca Mattiroli et al.
    After DNA replication, nucleosomes are assembled by two histone chaperone complexes each bound to an H3-H4 histone dimer, suggesting the feasibility for a semi-conservative mode of epigenome inheritance.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    FACT and Ubp10 collaborate to modulate H2B deubiquitination and nucleosome dynamics

    Melesse Nune et al.
    The histone chaperone FACT and the deubiquitinating enzyme Ubp10 act in concert to remove ubiquitin from histone H2B in nucleosomes, and likely coordinate nucleosome assembly during DNA replication and transcription.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Imaging the fate of histone Cse4 reveals de novo replacement in S phase and subsequent stable residence at centromeres

    Jan Wisniewski et al.
    Internally tagged, functional Cse4/CENP-A/CenH3 histone variant is exclusively centromeric and stable through the budding yeast cell cycle after replacement in S phase.
    1. Cell Biology

    Serotonin signaling by maternal neurons upon stress ensures progeny survival

    Srijit Das et al.
    Neuronal serotonin release tunes transcription response times of Caenorhabditis elegans germ cells to promote the survival and stress resistance of future offspring.
    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. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Insights into the molecular architecture and histone H3-H4 deposition mechanism of yeast Chromatin assembly factor 1

    Paul Victor Sauer et al.
    The CAF1 complex binds single histone H3-H4 dimers, and two such complexes associate with extended DNA elements to ensure the deposition of H3-H4 tetramers, the first step in the assembly of nucleosomes.
    1. Chromosomes and Gene Expression

    Nucleosome disassembly during human non-homologous end joining followed by concerted HIRA- and CAF-1-dependent reassembly

    Xuan Li, Jessica K Tyler
    The human genome is unpackaged to allow DNA breaks to be joined back together, and then repackaged into chromosomes afterwards.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    CDK-regulated dimerization of M18BP1 on a Mis18 hexamer is necessary for CENP-A loading

    Dongqing Pan et al.
    The stoichiometry and mechanism of interactions of the Mis18 complex with M18BP1 was analysed to unveil the molecular basis of new CENP-A deposition during the G1 phase of the cell cycle.

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