406 results found
    1. Microbiology and Infectious Disease

    MreB filaments align along greatest principal membrane curvature to orient cell wall synthesis

    Saman Hussain et al.
    MreB filaments bind, orient, and move along the direction of greatest membrane curvature, thus orienting the insertion of new glycan strands around the cell circumference in a manner that may help establish and maintain rod shape.
    1. Physics of Living Systems

    Ezrin enrichment on curved membranes requires a specific conformation or interaction with a curvature-sensitive partner

    Feng-Ching Tsai et al.
    Ezrin, an important actin-membrane linker, can zip adjacent membranes, be enriched to positively-curved membranes when phosphorylated and to negatively-curved membranes through a direct interaction with membrane curvature sensor I-BAR domain proteins.
    1. Cell Biology

    Dynamic recruitment of the curvature-sensitive protein ArhGAP44 to nanoscale membrane deformations limits exploratory filopodia initiation in neurons

    Milos Galic et al.
    Local inward plasma membrane deformations caused by actomyosin-dependent contraction trigger the dynamic recruitment of a curvature-sensitive actin-regulatory protein, which represents a receptor-independent auto-regulatory mechanism to control local actin polymerization dynamics at the plasma membrane.
    1. Neuroscience

    Synergistic actions of v-SNARE transmembrane domains and membrane-curvature modifying lipids in neurotransmitter release

    Madhurima Dhara et al.
    Naturally-occurring v-SNARE TMD variants differentially regulate fusion pore dynamics and cooperate with phospholipids in supporting membrane curvature at the fusion pore neck.
    1. Cell Biology

    Sphingomyelin metabolism controls the shape and function of the Golgi cisternae

    Felix Campelo et al.
    Association of curvature generating proteins to the Golgi membranes by sphingomyelin metabolism essentially controls the flatness of a Golgi cisterna that is necessary for efficient sorting and export.
    1. Physics of Living Systems
    2. Structural Biology and Molecular Biophysics

    Calponin-homology domain mediated bending of membrane-associated actin filaments

    Saravanan Palani et al.
    Combination of actin and curly on lipid membranes constitutes a new, minimalistic system to generate high curvature actin rings that can contract upon the action of myosin II filaments.
    1. Physics of Living Systems

    Full assembly of HIV-1 particles requires assistance of the membrane curvature factor IRSp53

    Kaushik Inamdar et al.
    The formation of HIV-1 particles requires a bending of the membrane that cannot be achieved by the Gag protein alone and thus there is need for the I-BAR protein IRSp53 to aid in the formation of HIV-1 buds.
    1. Microbiology and Infectious Disease
    2. Physics of Living Systems

    Mechanics and dynamics of translocating MreB filaments on curved membranes

    Felix Wong et al.
    Principal curvature-dependent motion of bacterial actin MreB results in localization consistent with all known literature.
    1. Structural Biology and Molecular Biophysics

    A lipid bound actin meshwork organizes liquid phase separation in model membranes

    Alf Honigmann et al.
    A combination of imaging experiments and computer simulations on a model lipid membrane integrate the 'picket fence' and 'raft' models, and suggest that the interplay between actin binding, lipid phase separation and curvature compartmentalize the membrane.
    1. Cell Biology
    2. Physics of Living Systems

    A physical mechanism of TANGO1-mediated bulky cargo export

    Ishier Raote et al.
    TANGO1 functions as a linactant filament to stabilize shallow COPII-coated buds, and after which membrane tension regulation, possibly mediated by TANGO1-controlled membrane fusion, facilitates bud elongation for procollagen export.

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