3,120 results found
    1. Evolutionary Biology
    2. Genetics and Genomics

    Nutrient status shapes selfish mitochondrial genome dynamics across different levels of selection

    Bryan L Gitschlag et al.
    Food supply and nutrient stress tolerance coordinately shape the multilevel selection dynamics of a mitochondrial cheater by promoting cheater persistence at both within-host and between-host levels of selection.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    An ER translocon for multi-pass membrane protein biogenesis

    Philip T McGilvray et al.
    A set of ER-localized membrane proteins whose loss causes developmental diseases in humans, assemble with Sec61 into a translocon that facilitates the biogenesis of hundreds of different multi-pass membrane proteins.
    1. Neuroscience

    Activation of astrocytes in hippocampus decreases fear memory through adenosine A1 receptors

    Yulan Li et al.
    A new strategy of memory consolidation disruption based on astrocyte and purinergic signaling, which leads to persistent fear memory attenuation accompanied by reduced fear-related anxiety behavior.
    1. Computational and Systems Biology

    Inherent regulatory asymmetry emanating from network architecture in a prevalent autoregulatory motif

    Md Zulfikar Ali et al.
    Network architecture and physiological features of the cell dictate asymmetric gene regulation between a negative autoregulatory TF gene and its target gene.
    1. Neuroscience

    Dynamic encoding of social threat and spatial context in the hypothalamus

    Piotr Krzywkowski et al.
    Threat and context-responsive neurons in the ventromedial hypothalamus are reshaped by experience to drive social avoidance.
    1. Chromosomes and Gene Expression

    Genome-wide alterations of uracil distribution patterns in human DNA upon chemotherapeutic treatments

    Hajnalka L Pálinkás et al.
    Human genomic DNA contains uracil in the late replicating, constitutive heterochromatic regions, while treatment with drugs perturbing thymidylate biosynthesis shifts the uracil distribution pattern towards the euchromatin in UNG-inhibited cells.
    1. Neuroscience

    Post-tetanic potentiation lowers the energy barrier for synaptic vesicle fusion independently of Synaptotagmin-1

    Vincent Huson et al.
    Modulation of the energy barrier for membrane fusion is a common mechanism by which sensors in the synapse produce supralinear calcium dependence of vesicle release and short-term synaptic potentiation.
    1. Cell Biology

    WDR90 is a centriolar microtubule wall protein important for centriole architecture integrity

    Emmanuelle Steib et al.
    Centriole integrity is ensured by the connection between the inner scaffold and microtubule triplets through POC16/WDR90 proteins.
    1. Evolutionary Biology

    Convergent changes in muscle metabolism depend on duration of high-altitude ancestry across Andean waterfowl

    Neal J Dawson et al.
    Changes in pathways of lipid oxidation, glycolysis, and mitochondrial oxidative phosphorylation are common strategies to cope with high-altitude hypoxia, but some changes require longer evolutionary time to arise.

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