254 results found
    1. Cell Biology

    The cell proliferation antigen Ki-67 organises heterochromatin

    Michal Sobecki et al.
    Antigen Ki-67, which is widely used as a cell proliferation marker, controls heterochromatin organisation and gene expression.
    1. Chromosomes and Gene Expression
    2. Microbiology and Infectious Disease

    ATRX promotes maintenance of herpes simplex virus heterochromatin during chromatin stress

    Joseph M Cabral et al.
    Epigenetic restriction of herpes simplex virus occurs in a biphasic manner, in which ATRX maintains viral heterochromatin after an initial phase of chromatin deposition.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Heterochromatin assembly by interrupted Sir3 bridges across neighboring nucleosomes

    Reza Behrouzi et al.
    Cooperative association of a histone-binding complex with pairs of appropriately modified nucleosomes, which form fundamental units of binding, mediates selective heterochromatin assembly and spreading.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Large domains of heterochromatin direct the formation of short mitotic chromosome loops

    Maximilian H Fitz-James et al.
    Large regions of foreign DNA inserted into mammalian chromosomes assemble into H3K9me3-heterochromatin and result in increased condensin loading with organisation into shorter mitotic chromosome loops than endogenous DNA.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    The preRC protein ORCA organizes heterochromatin by assembling histone H3 lysine 9 methyltransferases on chromatin

    Sumanprava Giri et al.
    Origin recognition complex-associated (ORCA) is crucial for the stability of the Histone H3 lysine 9 methyltransferase megacomplex, which is essential for heterochromatin organization.
    1. Evolutionary Biology
    2. Genetics and Genomics

    Innovation of heterochromatin functions drives rapid evolution of essential ZAD-ZNF genes in Drosophila

    Bhavatharini Kasinathan et al.
    Heterochromatic sequences evolve rapidly, as do ZAD-ZNF genes-encoding proteins involved in heterochromatin functions, explaining why evolutionarily dynamic ZAD-ZNF genes are more likely to be essential in Drosophila.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    A conserved RNA degradation complex required for spreading and epigenetic inheritance of heterochromatin

    Gergana Shipkovenska et al.
    Genetic and biochemical studies show that a conserved ribosome biogenesis complex also localizes to heterochromatin, where it triggers RNA degradation and promotes the spreading and epigenetic inheritance of histone methylation.
    1. Chromosomes and Gene Expression

    Major satellite repeat RNA stabilize heterochromatin retention of Suv39h enzymes by RNA-nucleosome association and RNA:DNA hybrid formation

    Oscar Velazquez Camacho et al.
    An RNA-mediated mechanism that stabilizes association of the Suv39h enzymes at mouse heterochromatin is defined.
    1. Chromosomes and Gene Expression

    Rapid epigenetic adaptation to uncontrolled heterochromatin spreading

    Jiyong Wang et al.
    Redundant pathways prevent heterochromatin spreading and ectopic heterochromatin assembly; and plasticity of heterochromatin assembly allows cells to adapt to heterochromatin stress.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    H3K9me2 orchestrates inheritance of spatial positioning of peripheral heterochromatin through mitosis

    Andrey Poleshko et al.
    The histone modification H3K9me2 marks peripheral heterochromatin and ensures positional information is safeguarded through cell division such that individual lamina-associated domains are re-established at the nuclear periphery in daughter nuclei.

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