344 results found
    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 et al.
    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. Chromosomes and Gene Expression
    2. Genetics and Genomics

    A prion accelerates proliferation at the expense of lifespan

    David M Garcia et al.
    In its capacity to switch into a heritable, prionogenic form, a conserved RNA-modifying enzyme epigenetically alters fundamental growth, aging, and protein synthesis properties of eukaryotic cells.
    1. Cell Biology
    2. Genetics and Genomics

    Analysis of meiosis in Pristionchus pacificus reveals plasticity in homolog pairing and synapsis in the nematode lineage

    Regina Rillo-Bohn et al.
    Investigation of meiosis in the nematode Pristionchus pacificus has illuminated evolutionary variation in this essential aspect of reproduction and established a new model for future study.
    1. Evolutionary Biology
    2. Genetics and Genomics

    A population-level invasion by transposable elements triggers genome expansion in a fungal pathogen

    Ursula Oggenfuss et al.
    The activation of transposable elements and relaxed purifying selection underpin an incipient expansion of the genome in populations of a major wheat pathogen.
    1. Chromosomes and Gene Expression

    SUV39 SET domains mediate crosstalk of heterochromatic histone marks

    Alessandro Stirpe et al.
    Clr4, a highly conserved SUV39 histone methyltransferase, requires its SET domain to sense histone H3K14 ubiquitination in order to maintain heterochromatin and H3K9 methylation.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    A precisely adjustable, variation-suppressed eukaryotic transcriptional controller to enable genetic discovery

    Asli Azizoglu et al.
    A new gene expression tool enables precise control of protein dosage over a large range and paves the way for new genetic discoveries.
    1. Chromosomes and Gene Expression

    Linker histone H1.8 inhibits chromatin binding of condensins and DNA topoisomerase II to tune chromosome length and individualization

    Pavan Choppakatla et al.
    Linker histone H1.8 shapes mitotic chromosomes by tuning the number and size of condensin-dependent DNA loops and suppressing condensin and DNA topoisomerase II-dependent individualization.
    1. Genetics and Genomics
    2. Microbiology and Infectious Disease

    Uniparental nuclear inheritance following bisexual mating in fungi

    Vikas Yadav et al.
    Discovery of a novel mode of sexual reproduction, termed pseudosexual reproduction, in fungi where both parents are required for mating but only one contributes to the meiotic progeny, similar to hybridogenesis in animals.
    1. Cell Biology

    Intracellular functions and motile properties of bi-directional kinesin-5 Cin8 are regulated by neck linker docking

    Alina Goldstein-Levitin et al.
    Precise hydrogen-bond stabilization of the neck linker docking onto the catalytic motor domain, is crucial for motor activity and intracellular functions of the bi-directional mitotic kinesin-5 Cin8.
    1. Cell Biology

    Selective dephosphorylation by PP2A-B55 directs the meiosis I-meiosis II transition in oocytes

    S Zachary Swartz et al.
    Time-course phosphoproteomics reveals that selective dephosphorylation is critical for directing the MI/MII transition and that, through its inherent phospho-threonine preference, PP2A-B55 imposes specific phosphoregulated behaviors that distinguish the two meiotic divisions.

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