271 results found
    1. Cell Biology

    Reducing lipid bilayer stress by monounsaturated fatty acids protects renal proximal tubules in diabetes

    Albert Pérez-Martí, Suresh Ramakrishnan ... Matias Simons
    Monounsaturated fatty acids protect against DKD by enhancing membrane fluidity and decreasing ER lipid bilayer stress in renal proximal tubules.
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    Pre-existing bilayer stresses modulate triglyceride accumulation in the ER versus lipid droplets

    Valeria Zoni, Rasha Khaddaj ... Stefano Vanni
    In parallel to protein-driven processes, characteristic physicochemical properties of the endoplasmic reticulum membrane modulate intracellular fat accumulation and lipid droplet formation.
    1. Structural Biology and Molecular Biophysics

    Membrane curvature sensing and symmetry breaking of the M2 proton channel from Influenza A

    James Lincoff, Cole VM Helsell ... Michael Grabe
    Using a combination of all-atom molecular simulation and continuum membrane mechanics, M2 channels from influenza are shown to be stabilized in negative Gaussian curvature regions, such as the neck of budding viral particles, only in C2-symmetric conformations.
    1. Microbiology and Infectious Disease

    A novel mechanosensitive channel controls osmoregulation, differentiation, and infectivity in Trypanosoma cruzi

    Noopur Dave, Ugur Cetiner ... Veronica Jimenez
    Structurally divergent bacterial-like mechanosensitive channels control multiple cellular functions in protozoan parasites.
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    The role of scaffold reshaping and disassembly in dynamin driven membrane fission

    Martina Pannuzzo, Zachary A McDargh, Markus Deserno
    Computational modeling of a dynamin-constricted membrane neck can rank proposed shape changes of the helical scaffold in terms of their fission aptitude and elucidate the associated pathways.
    1. Structural Biology and Molecular Biophysics

    Structure and in situ organisation of the Pyrococcus furiosus archaellum machinery

    Bertram Daum, Janet Vonck ... Werner Kühlbrandt
    Using both electron cryo-tomography and helical reconstruction, the first structure of the entire archaellum machinery with an assembled filament has been determined, providing the structural basis for our understanding of archaeal motility.
    1. Structural Biology and Molecular Biophysics

    All-atom molecular dynamics simulations of Synaptotagmin-SNARE-complexin complexes bridging a vesicle and a flat lipid bilayer

    Josep Rizo, Levent Sari ... Milo M Lin
    Novel insights into the molecular mechanisms underlying neurotransmitter release are provided by all-atom molecular dynamics simulations including SNARE proteins, synaptotagmin-1, complexin-1, a vesicle and a flat bilayer.
    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. Computational and Systems Biology
    2. Structural Biology and Molecular Biophysics

    The push-to-open mechanism of the tethered mechanosensitive ion channel NompC

    Yang Wang, Yifeng Guo ... Chen Song
    A pushing force on the ankyrin repeat region of NompC leads to the gating of the mechanosensitive ion channel, which may enable cells to feel compression and shrinkage.
    1. Biochemistry and Chemical Biology

    Membranes linked by trans-SNARE complexes require lipids prone to non-bilayer structure for progression to fusion

    Michael Zick, Christopher Stroupe ... William T Wickner
    Lipids with a propensity to form nonbilayer structures must be present for the last step of membrane fusion to take place.

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