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    1. Biophysics and Structural Biology
    2. Genes and Chromosomes

    Single-molecule observation of DNA compaction by meiotic protein SYCP3

    Johanna L Syrjänen et al.
    Building on previous work (Syrjänen, Pellegrini, & Davies, 2014), it is shown that SYCP3 contributes to the architecture of meiotic chromosomes through local bridging interactions that result in large-scale compaction of the chromosome axis.
    1. Genes and Chromosomes

    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. Genes and Chromosomes
    2. Genomics and Evolutionary Biology

    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. Genes and Chromosomes

    Divergent kleisin subunits of cohesin specify mechanisms to tether and release meiotic chromosomes

    Aaron F Severson, Barbara J Meyer
    Mechanisms that tether and release replicated sister chromatids to produce sperm and eggs rely extensively on meiotic cohesin complexes that are endowed with unexpectedly different properties specified by a single interchangeable subunit, the α-kleisin.
    1. Cell Biology
    2. Genes and Chromosomes

    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. Biochemistry and Chemical Biology
    2. Genes and Chromosomes

    Concerted action of the MutLβ heterodimer and Mer3 helicase regulates the global extent of meiotic gene conversion

    Yann Duroc et al.
    Meiotic cells employ a specific pathway to limit the amount of gene conversion occuring at recombination sites.
    1. Cell Biology

    NuMA recruits dynein activity to microtubule minus-ends at mitosis

    Christina L Hueschen et al.
    At mitosis, NuMA recruits dynein-dynactin to microtubule minus-ends, enabling robust microtubule clustering and the emergence of spindle poles.
    1. Genes and Chromosomes
    2. Genomics and Evolutionary Biology

    A map of human PRDM9 binding provides evidence for novel behaviors of PRDM9 and other zinc-finger proteins in meiosis

    Nicolas Altemose et al.
    In humans, specific sequence features can predict whether meiotic recombination occurs at sites bound by the protein PRDM9, whose DNA-binding zinc-finger domain can unexpectedly bind to gene promoters and to other copies of PRDM9.
    1. Cell Biology
    2. Genes and Chromosomes

    Methylation of histone H3K23 blocks DNA damage in pericentric heterochromatin during meiosis

    Romeo Papazyan et al.
    A previously unappreciated histone methylation pathway helps limit DNA double-strand break formation and recombination in heterochromatin during meiosis.
    1. Genes and Chromosomes

    Transcription dynamically patterns the meiotic chromosome-axis interface

    Xiaoji Sun et al.
    Distributed cohesin rings flexibly tether the axial element structure of meiotic chromosomes to the underlying chromatin to readily accommodate ongoing transcription.