31 results found
    1. Chromosomes and Gene Expression

    The human origin recognition complex is essential for pre-RC assembly, mitosis, and maintenance of nuclear structure

    Hsiang-Chen Chou et al.
    The initiation of human genome replication requires the six-subunit origin recognition complex (ORC) and CDC6, with ORC playing additional roles during mitosis and in organization of the cell nucleus.
    1. Evolutionary Biology

    Adaptive evolution of an essential telomere protein restricts telomeric retrotransposons

    Bastien Saint-Leandre et al.
    Evolution strictly preserves telomere stability but rapidly diversifies telomere length regulation in Drosophila.
    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. Chromosomes and Gene Expression
    2. Genetics and Genomics

    PRDM9 activity depends on HELLS and promotes local 5-hydroxymethylcytosine enrichment

    Yukiko Imai et al.
    Biochemical and genetic approaches uncover a chromatin remodeler for PRDM9 binding and the parallel local epigenetic modification of cytosines in mouse spermatocytes.
    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. Chromosomes and Gene Expression

    Centromere deletion in Cryptococcus deuterogattii leads to neocentromere formation and chromosome fusions

    Klaas Schotanus, Joseph Heitman
    Centromere deletion in Cryptococcus deuterogattii results in neocentromeres, which span actively expressed genes and at elevated temperatures cen10∆ mutants are unstable leading to chromosome fusion and silencing of the neocentromere.
    1. Genetics and Genomics

    Loss of centromere function drives karyotype evolution in closely related Malassezia species

    Sundar Ram Sankaranarayanan et al.
    The centromeres in Malassezia species, by breakage or inactivation, facilitate genome rearrangements that can result in varying karyotypes and contribute to the evolution of these species.
    1. Chromosomes and Gene Expression
    2. Evolutionary Biology

    Dynamic turnover of centromeres drives karyotype evolution in Drosophila

    Ryan Bracewell et al.
    De novo formation of centromeres creates diverse karyotypes in flies and is accompanied by rapid turnover of centromere-associated satellite repeats.
    1. Chromosomes and Gene Expression

    Exploration of CTCF post-translation modifications uncovers Serine-224 phosphorylation by PLK1 at pericentric regions during the G2/M transition

    Brian C Del Rosario et al.
    The chromosome architectural protein, CTCF, is phosphorylated at Ser224 in a cell-cycle-dependent manner and abrogation of phosphorylation leads to a cell growth defect.
    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.

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