203 results found
    1. Neuroscience

    Clathrin coat controls synaptic vesicle acidification by blocking vacuolar ATPase activity

    Zohreh Farsi et al.
    Parallel measurements of pH gradient and membrane potential at the single vesicle level have revealed that the synaptic vesicle acidification is initiated by removal of its clathrin coat, which blocks vesicular ATPase activity.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    A clathrin coat assembly role for the muniscin protein central linker revealed by TALEN-mediated gene editing

    Perunthottathu K Umasankar et al.
    The muniscin protein FCHO1 interacts with, and activates, the adapter protein-2 complex (AP-2) to promote the assembly of clathrin-coated vesicles.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    A nanobody-based molecular toolkit provides new mechanistic insight into clathrin-coat initiation

    Linton M Traub
    New intracellularly-expressed llama anti-EPS15 nanobodies reveal that pioneer clathrin-coat components function upstream of AP-2 clathrin adaptor deposition at the plasma membrane.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    9Å structure of the COPI coat reveals that the Arf1 GTPase occupies two contrasting molecular environments

    Svetlana O Dodonova et al.
    A molecular model of the assembled COPI coat, determined by cryo-electron tomography of an in vitro reconstituted budding reaction, reveals details of interactions mediating coat assembly and shows the binding site of ArfGAP2.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Visualizing the functional architecture of the endocytic machinery

    Andrea Picco et al.
    A combination of light and electron microscopy data provide new insights into the dynamic architecture and the function of the endocytic protein machinery in relation to membrane shape changes in vivo.
    1. Cell Biology
    2. Physics of Living Systems

    Single-molecule turnover dynamics of actin and membrane coat proteins in clathrin-mediated endocytosis

    Michael M Lacy et al.
    The main proteins of clathrin-mediated endocytosis bind and unbind rapidly, continuously turning over about five times during the formation of an endocytic vesicle in yeast.
    1. Cell Biology

    Epsin deficiency impairs endocytosis by stalling the actin-dependent invagination of endocytic clathrin-coated pits

    Mirko Messa et al.
    Epsin has a key role in the coupling of actin to endocytic clathrin coated pits that is required for their maturation and helps capture SNAREs at endocytic clathrin coated pits.
    1. Cell Biology

    A role of OCRL in clathrin-coated pit dynamics and uncoating revealed by studies of Lowe syndrome cells

    Ramiro Nández et al.
    Studies of Lowe syndrome patient cells, which lack the inositol 5-phosphatase OCRL, suggest that a defect in endocytosis plays a role in the pathological manifestations of the disease.
    1. Cell Biology

    Clathrin modulates vesicle scission, but not invagination shape, in yeast endocytosis

    Wanda Kukulski et al.
    Building on previous work (Picco et al., 2015), we use a hybrid imaging approach to address the role of clathrin during endocytosis: we find that it has no role in shaping or elongating membrane invaginations, but it does contribute to the regularity of vesicle scission.
    1. Cell Biology
    2. Physics of Living Systems

    Principles of self-organization and load adaptation by the actin cytoskeleton during clathrin-mediated endocytosis

    Matthew Akamatsu et al.
    An experimentally constrained multiscale mathematical model predicts that branched actin networks self-organize at endocytic sites and bend to produce force, which was verified with cryo-electron tomography of intact cells.

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