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Results Found: 11
  • Spo11-oligo mapping in S. cerevisiae red1, hop1, mek1 mutants

    Authors
    Lam, Isabel
    Keeney, Scott
    Description

    From GEO summary: Genome binding/occupancy profiling by high throughput sequencing. Meiotic recombination starts with the formation of DNA double-strand breaks (DSBs) made by Spo11. In Saccharomyces cerevisiae, the nonrandom distribution of meiotic DSBs along the genome can be attributed to the combined influence of multiple factors on Spo11 cleavage. One factor is higher-order chromatin structure,...

    Subject
    Chromosomes / genetics
    DNA Breaks, Double-Stranded
    Access Rights
    Free to All
  • Mechanism of in vivo activation of the MutLgamma-Exo1 complex for meiotic crossover formation

    Authors
    Borde, Valerie
    Description

    Summary from the GEO: "Programmed DNA double-strand breaks (DSBs) initiate meiotic recombination and their subsequent repair culminates in crossover (CO) formation. COs result from the asymmetric cleavage of double-Holliday junction (dHJ) intermediates, that requires the MutLγ complex together with a non-catalytic function of Exo1, an activity essential for fertility but at risk of generating unwanted...

    Subject
    DNA Breaks, Double-Stranded
    Meiosis
    MutL Proteins
    Protein Binding
    Recombination, Genetic
    Access Rights
    Free to All
  • Mechanism of in vivo activation of the MutL-Exo1 complex for meiotic crossover formation

    Authors
    Sanchez, Aurore
    Mu, Xiaojing
    Borde, Valerie
    Keeney, Scott
    Description

    Summary from the GEO: "Programmed DNA double-strand breaks (DSBs) initiate meiotic recombination and their subsequent repair culminates in crossover (CO) formation. COs result from the asymmetric cleavage of double-Holliday junction (dHJ) intermediates, that requires the MutLγ endonuclease and a non-catalytic function of Exo1, an activity essential for fertility but at risk of generating unwanted...

    Subject
    DNA Breaks, Double-Stranded
    Meiosis
    MutL Proteins
    Protein Binding
    Recombination, Genetic
    Access Rights
    Free to All
  • Balanced act of a leading strand DNA polymerase specific domain and its exonuclease domain promotes genome-wide replication fork symmetry

    Authors
    Meng, Xiangzhou
    Claussin, Clémence
    Regan-Mochrie, Gemma
    Whitehouse, Iestyn
    1 more author(s)...
    Description

    Summary from GEO: "During genome replication, the leading strand DNA polymerase conducts continuous synthesis over long stretches of DNA within each replicon. Processive DNA synthesis supports symmetric progression of sister replication forks and efficient genome duplication. To address the mechanisms underlying leading strand polymerase-mediated synthesis, we examine one of its conserved domains,...

    Subject
    DNA Breaks, Double-Stranded
    DNA Polymerase II
    DNA Replication
    Replicon
    Access Rights
    Free to All
  • Single-molecule mapping of replisome progression

    Authors
    Claussin, Clémence
    Vazquez, Jacob
    Whitehouse, Iestyn
    Description

    Summary from GEO: "Replicon-seq is a method to study the progression of sister replisomes during DNA replication. This method relies excision of the full-length of replicons by the fusion of MNase to MCM4 and sequencing via Nanopore technology." Overall design from GEO: "MCM4 was fused to Miccrococcal nuclease ( MNase) to generate DNA double strand break at the site of replisomes. DNA ends are...

    Subject
    DNA Breaks, Double-Stranded
    DNA Replication
    Replicon
    Access Rights
    Free to All
  • De novo deletions and duplications at recombination hotspots in mouse germlines

    Authors
    Lukaszewicz, Agnieszka
    Keeney, Scott
    Jasin, Maria
    Description

    Summary from GEO: "Numerous DNA double-strand breaks (DSBs) arise during meiosis to initiate homologous recombination. These DSBs are usually repaired faithfully, but here we uncover a new type of mutational event in which deletions form via joining of ends from two closely-spaced DSBs (double cuts) within a single hotspot or at adjacent hotspots on the same or different chromatids. Deletions occur...

    Subject
    Ataxia Telangiectasia Mutated Proteins
    DNA Breaks, Double-Stranded
    Meiosis
    Mutagenesis, Insertional
    Recombination, Genetic
    Access Rights
    Free to All
  • ISG15 Conjugation to Proteins on Nascent DNA Mitigates DNA Replication Stress

    Authors
    Li, Zhuoning
    Petrini, John
    Description

    Description from PRIDE: "The pathways involved in suppressing DNA replication stress and the associated DNA damage are critical to maintaining genome integrity. The Mre11 complex is unique among double strand break (DSB) repair proteins for its association with the DNA replication fork. Here we show that Mre11 complex inactivation causes DNA replication stress and changes in the abundance of proteins...

    Subject
    DNA Breaks, Double-Stranded
    DNA Damage
    DNA Repair
    DNA Replication
    MRE11 Homologue Protein
    Access Rights
    Free to All
  • ANKRD31 protein interactions

    Authors
    Li, Zhuoning
    Keeney, Scott
    Description

    Description from PRIDE: "Sex chromosomes in males of most mammalian species share only a small homologous segment, the pseudoautosomal region (PAR), wherein double-strand break (DSB) formation must occur for correct meiotic segregation. We find that multiple DSB-promoting factors hyperaccumulate in the PAR, including the ankyrin-repeat domain-containing protein ANKRD31. We used immunoprecipitation...

    Subject
    Ankyrins
    DNA Breaks, Double-Stranded
    Mass spectrometry
    Pseudoautosomal Regions
    Sex Characteristics
    Access Rights
    Free to All
  • Spo11-oligo mapping of double-strand breaks in spo11 mutants

    Authors
    Tischfield, Sam E.
    Keeney, Scott
    Description

    Summary from GEO: "The Spo11-generated double-strand breaks (DSBs) that initiate meiotic recombination are non-randomly distributed across the genome. Here, we use Spo11-oligonucleotide complexes to map the distribution of meiotic DSBs in a spo11 mutant strain of Saccharomyces cerevisiae." Overall design from GEO: "4 samples total: two biological replicate Spo11-oligo maps of S. cerevisiae SK1...

    Subject
    DNA Breaks, Double-Stranded
    Meiosis
    Recombination, Genetic
    Sequence Analysis, DNA
    Access Rights
    Free to All
  • Meiotic double-strand break mapping in spo11 mutants by S1Seq

    Authors
    Tischfield, Sam E.
    Mimitou, Eleni P.
    Keeney, Scott
    Description

    Summary from GEO: "The Spo11-generated double-strand breaks (DSBs) that initiate meiotic recombination are non-randomly distributed across the genome. Here, we use S1Seq mapping to map the distribution of meiotic DSBs in spo11 mutant strains of Saccharomyces cerevisiae." Overall design from GEO: "4 samples total: two biological replicate Spo11-oligo maps of S. cerevisiae spo11-F260A and wildtype."

    Subject
    DNA Breaks, Double-Stranded
    Meiosis
    Recombination, Genetic
    Sequence Analysis, DNA
    Access Rights
    Free to All