149 results found
    1. Cell Biology
    2. Chromosomes and Gene Expression

    The MAP kinase pathway coordinates crossover designation with disassembly of synaptonemal complex proteins during meiosis

    Saravanapriah Nadarajan et al.
    Coordination between crossover designation and synaptonemal complex disassembly is executed via a conserved MAP kinase pathway and is critical for accurate chromosome segregation during meiosis.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Juxtaposition of heterozygous and homozygous regions causes reciprocal crossover remodelling via interference during Arabidopsis meiosis

    Piotr A Ziolkowski et al.
    Heterozygosity changes the balance between interfering and non-interfering crossovers during Arabidopsis meiosis.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    A compartmentalized signaling network mediates crossover control in meiosis

    Liangyu Zhang et al.
    A regulatory circuit that localizes to the synaptonemal complex, a liquid crystalline compartment between chromosomes, ensures crossing-over while limiting the number of crossovers between homologous chromosomes during meiosis.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Non-crossover gene conversions show strong GC bias and unexpected clustering in humans

    Amy L Williams et al.
    In humans, non-crossover gene conversion events transmit GC alleles in 68% of cases and exhibit a complex pattern of multiple disconnected tracts clustered within 20–30 kilobase intervals.
    1. Chromosomes and Gene Expression

    The kinetochore prevents centromere-proximal crossover recombination during meiosis

    Nadine Vincenten et al.
    The meiotic DNA recombination landscape is locally influenced by the kinetochore to minimize potentially deleterious pericentromeric crossover recombination.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    The synaptonemal complex has liquid crystalline properties and spatially regulates meiotic recombination factors

    Ofer Rog et al.
    Formation of a phase-separated interface between homologous chromosomes during meiosis enables regulatory signals to spread in cis over long distances, illuminating the longstanding mystery of crossover interference.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Srs2 promotes synthesis-dependent strand annealing by disrupting DNA polymerase δ-extending D-loops

    Jie Liu et al.
    The Srs2 helicase functions in Synthesis-Dependent Strand Annealing to avoid crossover formation during homologous recombination by disrupting D-loops that are extended by DNA polymerase delta in an ATP-dependent and direction-specific manner.
    1. Chromosomes and Gene Expression

    Local chromosome context is a major determinant of crossover pathway biochemistry during budding yeast meiosis

    Darpan Medhi et al.
    Different homologous recombination pathways are dominant in different regions of meiotic chromosomes, indicating that chromosome structure influences recombination biochemistry.
    1. Genetics and Genomics
    2. Plant Biology

    The genomic landscape of meiotic crossovers and gene conversions in Arabidopsis thaliana

    Erik Wijnker et al.
    A comprehensive and genome-wide description of the genomic make-up and frequency of meiotic recombination in Arabidopsis thaliana reveals regional preferences, including nucleosome-free regions, and two associated recombination motifs.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Polo-like kinase-dependent phosphorylation of the synaptonemal complex protein SYP-4 regulates double-strand break formation through a negative feedback loop.

    Saravanapriah Nadarajan et al.
    PLK-1/2-mediated SYP-4 phosphorylation is dependent on crossover precursor formation, triggering a switch in the dynamic state of the synaptonemal complex that reduces the formation of further double-strand breaks at late meiotic prophase.

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