599 results found
    1. Cell Biology
    2. Evolutionary Biology

    Evolution of histone 2A for chromatin compaction in eukaryotes

    Benjamin R Macadangdang et al.
    The N-terminal domain in histone 2A serves as an evolutionary tool to enable greater chromatin compaction when genome size is disproportionately larger than the nuclear volume across eukaryotes.
    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. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    H2A histone-fold and DNA elements in nucleosome activate SWR1-mediated H2A.Z replacement in budding yeast

    Anand Ranjan et al.
    Specific elements of the canonical nucleosome are recognized by the multi-component SWR1 chromatin remodeler for ATP-dependent replacement of H2A-H2B dimers with H2A.Z-H2B.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Distinct roles for S. cerevisiae H2A copies in recombination and repeat stability, with a role for H2A.1 threonine 126

    Nealia CM House et al.
    Despite differing by only one amino acid in the C-terminal tail, copy 1 of yeast histone 2A has a repair-specific role not shared by copy 2.
    1. Cell Biology
    2. Developmental Biology

    Developmentally regulated H2Av buffering via dynamic sequestration to lipid droplets in Drosophila embryos

    Matthew Richard Johnson et al.
    In early Drosophila embryos, histone H2Av continuously exchanges between cytoplasmic lipid droplets, a process that modulates H2Av import into nuclei and constitutes a novel post-translational strategy to regulate nuclear H2Av levels.
    1. Plant Biology

    DET1-mediated degradation of a SAGA-like deubiquitination module controls H2Bub homeostasis

    Amr Nassrallah et al.
    Light signaling components interact with a histone H2B deubiquitination module, adjusting chromatin states at global level during Arabidopsis seedling development.
    1. Chromosomes and Gene Expression

    Histone H2B ubiquitylation represses gametogenesis by opposing RSC-dependent chromatin remodeling at the ste11 master regulator locus

    Philippe Materne et al.
    Building on previous work (Materne et al., 2015), it is shown that the ubiquitylation of histone H2B represses cell differentiation by opposing chromatin remodeling at the promoter of the master regulator of gametogenesis, ste11
    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. Chromosomes and Gene Expression
    2. Structural Biology and Molecular Biophysics

    Structural basis for COMPASS recognition of an H2B-ubiquitinated nucleosome

    Evan J Worden et al.
    The structure of the COMPASS methyltransferase bound to an H2B-ubiquitinated nucleosome provides insights into mechanisms of trans-histone cross-talk and the dynamic role of H2B ubiquitination in stimulating histone methylation.
    1. Neuroscience

    The activity-dependent histone variant H2BE modulates the life span of olfactory neurons

    Stephen W Santoro, Catherine Dulac
    A genome-organizing protein that is present only in the olfactory system of mice has been found to orchestrate changes in the relative numbers of different odor-sensing neurons on the basis of how active these neurons are.

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