53 results found
    1. Chromosomes and Gene Expression

    p53 orchestrates DNA replication restart homeostasis by suppressing mutagenic RAD52 and POLθ pathways

    Sunetra Roy et al.
    p53 suppresses genome instability by direct role at stalled replication forks for pathway regulation that explains transcription-independent p53 tumor-suppressor functions.
    1. Chromosomes and Gene Expression

    Mechanisms underlying genome instability mediated by formation of foldback inversions in Saccharomyces cerevisiae

    Bin-zhong Li et al.
    Genetic analysis combined with whole genome sequencing elucidates mechanisms and pathways that form and prevent a specific class of genome rearrangements, foldback inversions, seen in many human cancers.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    ATR/Mec1 prevents lethal meiotic recombination initiation on partially replicated chromosomes in budding yeast

    Hannah G Blitzblau, Andreas Hochwagen
    During meiosis, budding yeast use a checkpoint involving the protein Mec1 to prevent the formation of double-strand breaks in DNA that has not completed replication.
    1. Cell Biology

    Kinase-dead ATM protein is highly oncogenic and can be preferentially targeted by Topo-isomerase I inhibitors

    Kenta Yamamoto et al.
    Orphan ATM kinase-domain missense mutations are unexpectedly common and form a potent oncogenic event and a biomarker for Topo-isomerase I inhibitor based therapy.
    1. Cell Biology

    SIRT6 is a DNA double-strand break sensor

    Lior Onn et al.
    Hundreds of proteins are involved in the DNA damage response but only three sensors for DSB were known but now SIRT6 is identified as a fourth DSB sensor.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Post-meiotic DNA double-strand breaks occur in Tetrahymena, and require Topoisomerase II and Spo11

    Takahiko Akematsu et al.
    The first genetic compelling evidence for post-meiotic DNA double-strand breaks and its relation to chromatin remodeling in haploid pronuclei is shown.
    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. Chromosomes and Gene Expression

    Translesion polymerase kappa-dependent DNA synthesis underlies replication fork recovery

    Peter Tonzi et al.
    Translesion polymerase kappa promotes replication fork restart to maintain genome stability during conditions of nucleotide deprivation.
    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. Structural Biology and Molecular Biophysics
    2. Chromosomes and Gene Expression

    MutS/MutL crystal structure reveals that the MutS sliding clamp loads MutL onto DNA

    Flora S Groothuizen et al.
    Visualization of the sliding clamp in DNA mismatch repair shows how a transient complex is activated.

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