3,105 results found
    1. Physics of Living Systems
    2. Neuroscience

    Mechanical sensitivity of Piezo1 ion channels can be tuned by cellular membrane tension

    Amanda H Lewis, Jörg Grandl
    Tension is the activating stimulus of Piezo1 mechanosensitive ion channels and resting membrane tension modulates overall channel sensitivity to mechanical stimulation.
    1. Structural Biology and Molecular Biophysics

    Piezo’s membrane footprint and its contribution to mechanosensitivity

    Christoph A Haselwandter, Roderick MacKinnon
    Membrane mechanics predict that the ion channel Piezo recruits the surrounding membrane to amplify its sensitivity to changes in membrane tension, with greatest sensitivity in the low-tension regime.
    1. Cell Biology

    AMPK and vacuole-associated Atg14p orchestrate μ-lipophagy for energy production and long-term survival under glucose starvation

    Arnold Y Seo et al.
    Upon AMPK activation by acute glucose restriction, Atg14p shifts its distribution from ER exit sites to liquid-ordered membrane domains on the vacuolar surface where, together with Atg6p, it facilitates LD-specific autophagy (i.e., microautophagy of lipid droplets) for energy production and long-term survival of starved cells.
    1. Cell Biology

    An unmet actin requirement explains the mitotic inhibition of clathrin-mediated endocytosis

    Satdip Kaur et al.
    Endocytosis is switched off in dividing cells because actin is not available to assist the clathrin machinery at a time when membrane tension is increased.
    1. Structural Biology and Molecular Biophysics

    Cryo-EM structure of the mechanically activated ion channel OSCA1.2

    Sebastian Jojoa-Cruz et al.
    Structures of OSCA1.2, a member of a newly characterized family of mechanically activated ion channels, provide insights into mechanism of channel gating by membrane tension.
    1. Cell Biology
    2. Developmental Biology

    Matrix metalloproteinase 14 is required for fibrous tissue expansion

    Susan H Taylor et al.
    The membrane type I-matrix metalloproteinase is essential for the release of collagen fibrils from plasma membrane fibripositors, which is required for the transition from embryonic to postnatal tendon development.
    1. Cell Biology

    Oscillatory phase separation in giant lipid vesicles induced by transmembrane osmotic differentials

    Kamila Oglęcka et al.
    Spontaneous osmoregulation in giant phospholipid vesicles, which is characterized by oscillations in vesicle size and membrane tension, couples to the compositional degrees of freedom at the membrane surface to produce oscillations in domain texture and induce isothermal phase change.

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