230 results found
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Dynamic clustering of dynamin-amphiphysin helices regulates membrane constriction and fission coupled with GTP hydrolysis

    Tetsuya Takeda et al.
    A new approach using combination of electron microscopy (EM) and high-speed atomic force microscopy (HS-AFM) clearly demonstrates dynamics of dynamin-amphiphysin complexes during membrane constriction and fission suggesting a novel 'clusterase' model of the dynamin-mediated membrane fission.
    1. Cell Biology
    2. Neuroscience

    Dynamin phosphorylation controls optimization of endocytosis for brief action potential bursts

    Moritz Armbruster et al.
    The recycling of transmitter vesicles at synapses shows calcium-dependent regulation that depends on the phosphorylation status of an enzyme called dynamin.
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

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

    Martina Pannuzzo et al.
    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. Cell Biology

    Uncoupling of dynamin polymerization and GTPase activity revealed by the conformation-specific nanobody dynab

    Valentina Galli et al.
    Uncoupling of dynamin polymerization and GTPase activity can be induced with dynamin, which allows in vivo visualization of its activity at endocytic pits.
    1. Cell Biology

    Cardiolipin targets a dynamin-related protein to the nuclear membrane

    Usha Pallabi Kar et al.
    A single amino acid residue is critical for cardiolipin interaction specificity and nuclear membrane recruitment of a dynamin-related protein.
    1. Developmental Biology
    2. Neuroscience

    Regulation of mitochondria-dynactin interaction and mitochondrial retrograde transport in axons

    Catherine M Drerup et al.
    Actr10, a dynactin pointed end protein, is essential for mitochondrial interaction with the dynein-dynactin retrograde motor and subsequent transport.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Structural inhibition of dynamin-mediated membrane fission by endophilin

    Annika Hohendahl et al.
    The BAR protein endophilin spaces out turns of the dynamin helix, blocking its active conformational change and membrane fission.
    1. Cell Biology
    2. Neuroscience

    A dynamin 1-, dynamin 3- and clathrin-independent pathway of synaptic vesicle recycling mediated by bulk endocytosis

    Yumei Wu et al.
    Analysis of neurons that lack the two neuronal dynamins, dynamin 1 and 3, demonstrates a pathway of synaptic vesicle reformation that does not require these two dynamins or clathrin-dependent budding.
    1. Cell Biology

    Localised dynactin protects growing microtubules to deliver oskar mRNA to the posterior cortex of the Drosophila oocyte

    Ross Nieuwburg et al.
    Dynactin acts as an anti-catastrophe factor that extends microtubule growth; posteriorly elucidating a new essential step in oskar mRNA localisation and providing a novel mechanism by which motor-dependent transport can amplify the polarity of MT networks.
    1. Cell Biology

    Dynein–Dynactin–NuMA clusters generate cortical spindle-pulling forces as a multi-arm ensemble

    Masako Okumura et al.
    Optogenetic reconstitution reveals core functional modules and architecture of the cortical force-generating machinery in human cells.

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