125 results found
    1. Chromosomes and Gene Expression

    Telomere repeats induce domains of H3K27 methylation in Neurospora

    Kirsty Jamieson et al.
    Vast regions of facultative heterochromatin marked by methylation of lysine 27 on histone H3 depend on their proximity to chromosome ends and can be induced ectopically by insertion of telomere repeats.
    1. Developmental Biology
    2. Chromosomes and Gene Expression

    H3K27 modifications define segmental regulatory domains in the Drosophila bithorax complex

    Sarah K Bowman et al.
    Segment-specific boundaries of histone modifications reveal the regulatory logic of a classic developmental control region.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    ASH1-catalyzed H3K36 methylation drives gene repression and marks H3K27me2/3-competent chromatin

    Vincent T Bicocca et al.
    While SET-2 methylates histone H3K36 during transcription, ASH1 methylates this residue in repressed regions, is important for silencing, and can both positively and negatively influence methylation of histone H3K27.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Methylation of histone H3K23 blocks DNA damage in pericentric heterochromatin during meiosis

    Romeo Papazyan et al.
    A previously unappreciated histone methylation pathway helps limit DNA double-strand break formation and recombination in heterochromatin during meiosis.
    1. Chromosomes and Gene Expression

    H3.3K27M mutant proteins reprogram epigenome by sequestering the PRC2 complex to poised enhancers

    Dong Fang et al.
    Redistribution of the PRC2 complex in H3.3K27M mutant cells to poised enhancers contributes to the global reduction of H3K27me3 in cells expressing the mutant proteins.
    1. Chromosomes and Gene Expression

    Caenorhabditis elegans nuclear RNAi factor SET-32 deposits the transgenerational histone modification, H3K23me3

    Lianna Schwartz-Orbach et al.
    H3K23me3 is a RNAi-mediated transgenerationally heritable heterochromatin mark in Caenorhabditis elegans.
    1. Chromosomes and Gene Expression
    2. Structural Biology and Molecular Biophysics

    Structural basis for PRC2 decoding of active histone methylation marks H3K36me2/3

    Ksenia Finogenova et al.
    Nucleosome binding by PRC2 threads H3K27 into its active site via an interaction network set in register by unmodified H3K36.
    1. Cancer Biology
    2. Chromosomes and Gene Expression

    Histone deposition pathways determine the chromatin landscapes of H3.1 and H3.3 K27M oncohistones

    Jay F Sarthy et al.
    Deposition of mutant oncohistones by alternative nucleosome assembly pathways results in dramatic local differences in histone methylation in pediatric diffuse midline gliomas.
    1. Chromosomes and Gene Expression

    Differentiating Drosophila female germ cells initiate Polycomb silencing by regulating PRC2-interacting proteins

    Steven Z DeLuca et al.
    Characterization of Drosophila female germ cell differentiation shows that nurse cells initiate Polycomb silencing by regulating Pcl and Scm levels to alter the biochemical properties of the PRC2 H3K27 methylase.
    1. Developmental Biology
    2. Chromosomes and Gene Expression

    EED orchestration of heart maturation through interaction with HDACs is H3K27me3-independent

    Shanshan Ai et al.
    During heart maturation, embryonic ectoderm development as a chromatin remodeler triggers transcriptional silencing, while H3K27me3 is a passenger that is not sufficient for gene silencing.

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