39 results found
    1. Evolutionary Biology
    2. Genetics and Genomics

    The effect of hybridization on transposable element accumulation in an undomesticated fungal species

    Mathieu Hénault et al.
    Transposable elements are not reactivated in natural hybrids of the yeast Saccharomyces paradoxus, but their accumulation is genotype-specific and is not predicted by the evolutionary divergence between a hybrid's parents.
    1. Chromosomes and Gene Expression

    The homologous recombination machinery modulates the formation of RNA–DNA hybrids and associated chromosome instability

    Lamia Wahba et al.
    When a protein involved in DNA repair malfunctions, it can anneal RNA molecules to DNA molecules, creating hybrids that increase the frequency of mutations in the DNA.
    1. Computational and Systems Biology

    Cell-cycle-gated feedback control mediates desensitization to interferon stimulation

    Anusorn Mudla et al.
    Cell cycle gating enables a temporal compartmentalization of negative vs positive feedback control processes, leading to differential responses to repetitive interferon stimulations.
    1. Cell Biology
    2. Physics of Living Systems

    Metabolic constraints drive self-organization of specialized cell groups

    Sriram Varahan et al.
    In a developing yeast colony, cells go from homogeneous states to spatially organized, specialized metabolic states, and the new metabolic states depend on resources produced by the original state.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    wtf genes are prolific dual poison-antidote meiotic drivers

    Nicole L Nuckolls et al.
    Selfish wtf meiotic drive genes use overlapping transcripts to encode both a trans-acting poison to kill gametes that do not inherit the gene and a gamete-autonomous antidote to specifically rescue the gametes that do.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Sec17 (α-SNAP) and an SM-tethering complex regulate the outcome of SNARE zippering in vitro and in vivo

    Matthew L Schwartz et al.
    Sec17 is shown to have divergent effects on pre-fusion SNARE complex activity, depending on the state of SNARE zippering and HOPS, an SM-tether complex, controls the outcome of Sec17-SNARE engagement.
    1. Cell Biology

    The step-wise pathway of septin hetero-octamer assembly in budding yeast

    Andrew Weems, Michael McMurray
    In budding yeast cells, slow monomeric septin GTPase activity and the cytosolic GTP:GDP ratio dictate the relative incorporation of alternative subunits during septin hetero-oligomer assembly, which proceeds by discrete, ordered steps dependent on allostery between interaction interfaces.
    1. Genetics and Genomics
    2. Plant Biology

    Evidence for suppression of immunity as a driver for genomic introgressions and host range expansion in races of Albugo candida, a generalist parasite

    Mark McMullan et al.
    Hybridization and introgression blur species boundaries and broaden genetic diversity available for adaptation; and widespread introgression underpins the evolution of races of the generalist pathogen Albugo candida that specialise on different host plant species.
    1. Evolutionary Biology
    2. Genetics and Genomics

    A natural variant of the essential host gene MMS21 restricts the parasitic 2-micron plasmid in Saccharomyces cerevisiae

    Michelle Hays et al.
    A novel assay to measure 2-micron stability together with a survey of natural variation among Saccharomyces cerevisiae strains reveals novel means by which yeasts can combat the parasitic 2-micron plasmids.
    1. Evolutionary Biology

    Adaptive evolution of nontransitive fitness in yeast

    Sean W Buskirk et al.
    A series of selective events, each improving fitness relative to an immediate predecessor, can result in organisms that are less fit compared to a distant ancestor.

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