114 results found
    1. Chromosomes and Gene Expression

    Recombination occurs within minutes of replication blockage by RTS1 producing restarted forks that are prone to collapse

    Michael O Nguyen, Manisha Jalan ... Matthew C Whitby
    Homologous recombination is the default response to replication impedance by the RTS1 barrier, leading to restarted replication forks that suffer frequent collapse, triggering further rounds of recombination downstream of the barrier.
    1. Chromosomes and Gene Expression

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

    Sunetra Roy, Karl-Heinz Tomaszowski ... Katharina Schlacher
    p53 suppresses genome instability by direct role at stalled replication forks for pathway regulation that explains transcription-independent p53 tumor-suppressor functions.
    1. Cancer Biology
    2. Chromosomes and Gene Expression

    53BP1 and BRCA1 control pathway choice for stalled replication restart

    Yixi Xu, Shaokai Ning ... Dongyi Xu
    53BP1 and BRCA1 antagonistically control a temporal choice of two distinct pathways to restart stalled replication forks in a DNA double stand repair-independent manner.
    1. Chromosomes and Gene Expression

    The PCNA unloader Elg1 promotes recombination at collapsed replication forks in fission yeast

    Sanjeeta Tamang, Anastasiya Kishkevich ... Matthew C Whitby
    Unloading the polymerase sliding clamp PCNA from DNA by Elg1 promotes recombination at the RTS1 replication fork barrier by limiting Fbh1 and Srs2 activity.
    1. Chromosomes and Gene Expression

    Factors affecting template switch recombination associated with restarted DNA replication

    Manisha Jalan, Judith Oehler ... Matthew C Whitby
    Genomic deletions and gene conversions, caused by template switching associated with restarted DNA replication, are detected downstream of a collapsed replication fork and are suppressed by several conserved DNA helicases.
    1. Chromosomes and Gene Expression

    Translesion polymerase kappa-dependent DNA synthesis underlies replication fork recovery

    Peter Tonzi, Yandong Yin ... Tony T Huang
    Translesion polymerase kappa promotes replication fork restart to maintain genome stability during conditions of nucleotide deprivation.
    1. Chromosomes and Gene Expression

    Inter-Fork Strand Annealing causes genomic deletions during the termination of DNA replication

    Carl A Morrow, Michael O Nguyen ... Matthew C Whitby
    The discovery of a mechanism that causes DNA deletions during non-canonical DNA replication termination is described.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    The interplay of RNA:DNA hybrid structure and G-quadruplexes determines the outcome of R-loop-replisome collisions

    Charanya Kumar, Sahil Batra ... Dirk Remus
    Reconstitution of orientation-specific R-loop-replisome collisions with purified proteins reveals the differential impact of R-loop-associated RNA:DNA hybrids and G-quadruplexes on replication fork progression.
    1. Cell Biology

    Schizosaccharomyces pombe Rtf2 is important for replication fork barrier activity of RTS1 via splicing of Rtf1

    Alice M Budden, Murat Eravci ... Antony M Carr
    Rtf2 is shown to associate with multiple splicing factors and influence splicing of a subset of introns explaining why previous work erroneously assigned it as a replication restart factor in fission yeast.
    1. Chromosomes and Gene Expression

    DDK/Hsk1 phosphorylates and targets fission yeast histone deacetylase Hst4 for degradation to stabilize stalled DNA replication forks

    Shalini Aricthota, Devyani Haldar
    Sirtuin, Hst4 is a novel DDK kinase target, which is modified and degraded in response to replication stress, increasing H3K56 acetylation, to stabilize DNA replication forks via fork protection complex which maintains genome stability and has potential in cancer therapeutics.

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