26 results found
    1. Cell Biology

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

    Kamila Oglęcka, Padmini Rangamani ... Atul N Parikh
    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.
    1. Neuroscience

    α-Synuclein plasma membrane localization correlates with cellular phosphatidylinositol polyphosphate levels

    Reeba Susan Jacob, Cédric Eichmann ... Philipp Selenko
    Plasma membrane clusters of the Parkinson's disease protein α-synuclein colocalize with negatively charged phospholipids involved in endocytosis and exocytosis.
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    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    The structure of the COPII transport-vesicle coat assembled on membranes

    Giulia Zanetti, Simone Prinz ... John AG Briggs
    A structure of the complete, membrane bound, COPII coat solved by sub-tomogram averaging reveals the arrangement of all protein subunits on the membrane and suggests a mechanism for coating heterogeneously-shaped carriers.
    1. Structural Biology and Molecular Biophysics
    2. Evolutionary Biology

    Methylation at the C-2 position of hopanoids increases rigidity in native bacterial membranes

    Chia-Hung Wu, Maja Bialecka-Fornal, Dianne K Newman
    Methylation specifically enhances the ability of hopanoids to rigidify membranes under physiologically relevant conditions, which impacts the current interpretation of the 2-methylhopane fossil record.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Arf1/COPI machinery acts directly on lipid droplets and enables their connection to the ER for protein targeting

    Florian Wilfling, Abdou Rachid Thiam ... Tobias C Walther
    The targeting of proteins from the endoplasmic reticulum to lipid droplets relies on surface modulation of the lipid droplet by the Arf1/COPI machinery.
    1. Structural Biology and Molecular Biophysics

    Identification of electroporation sites in the complex lipid organization of the plasma membrane

    Lea Rems, Xinru Tang ... Lucie Delemotte
    Advanced data analysis of molecular dynamics simulations of complex lipid membranes provides a quantitative and predictive model of the molecular features that control electroporation.
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    Phosphoinositides regulate force-independent interactions between talin, vinculin, and actin

    Charlotte F Kelley, Thomas Litschel ... Naoko Mizuno
    In vitro reconstitution of the core focal adhesion proteins talin and vinculin with actin reveals lipid-dependent release of autoinhibition.
    1. Structural Biology and Molecular Biophysics

    Direct binding of phosphatidylglycerol at specific sites modulates desensitization of a ligand-gated ion channel

    Ailing Tong, John T Petroff II ... Wayland WL Cheng
    Phosphatidylglycerol binding at multiple sites stabilizes the open state relative to the desensitized state of a pentameric ligand-gated ion channel.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Acyl chain asymmetry and polyunsaturation of brain phospholipids facilitate membrane vesiculation without leakage

    Marco M Manni, Marion L Tiberti ... Bruno Antonny
    The asymmetric combination of saturated and polyunsaturated acyl chains in phospholipids as typically observed in synapses makes membranes prone to deformation and fission without compromising their impermeability.
    1. Cell Biology
    2. Neuroscience

    Large vesicle extrusions from C. elegans neurons are consumed and stimulated by glial-like phagocytosis activity of the neighboring cell

    Yu Wang, Meghan Lee Arnold ... Barth D Grant
    Giant neuron derived vesicles called exophers are processed by phagocytosis in neighboring skin cells, and the phagocytic interaction promotes exopher production.

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