126 results found
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    ULK3 regulates cytokinetic abscission by phosphorylating ESCRT-III proteins

    Anna Caballe et al.
    ULK3 is a kinase in the abscission checkpoint that temporarily inactivates ESCRT-III proteins via phosphorylation, which is required to delay cytokinesis in response to defects in mitosis.
    1. Cancer Biology
    2. Cell Biology

    Identification of abscission checkpoint bodies as structures that regulate ESCRT factors to control abscission timing

    Lauren K Williams et al.
    Cytoplasmic bodies sequester important abscission machinery to delay completion of cytokinesis in response to mitotic errors.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    Timing of ESCRT-III protein recruitment and membrane scission during HIV-1 assembly

    Daniel S Johnson et al.
    During viral assembly, ESCRTIII and VPS4 are recruited after most of the HIV-1 membrane is bent but disappear prior to scission of the virion from the cell.
    1. Structural Biology and Molecular Biophysics
    2. Plant Biology

    Mechanistic insight into a peptide hormone signaling complex mediating floral organ abscission

    Julia Santiago et al.
    A plant peptide hormone controls organ shedding by acting as molecular glue that promotes the interaction between two membrane receptor kinases.
    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. Biochemistry and Chemical Biology
    2. Cell Biology

    Lipid accumulation controls the balance between surface connection and scission of caveolae

    Madlen Hubert et al.
    Caveolae sense the membrane lipid composition, which influences their dynamic behavior at the cell surface.
    1. Cell Biology
    2. Developmental Biology

    The recycling endosome protein Rab25 coordinates collective cell movements in the zebrafish surface epithelium

    Patrick Morley Willoughby et al.
    Rab25a and Rab25b mutant embryos exhibit epithelial spreading delays during morphogenesis and are characterized by cytokinesis defects leading to cell fusions, heterogeneous epithelial cell sizes, and reduced cortical actomyosin contractility.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Topoisomerase VI senses and exploits both DNA crossings and bends to facilitate strand passage

    Timothy J Wendorff, James M Berger
    The engagement of DNA crossings is shown to license ATP hydrolysis and DNA cleavage by topoisomerase VI, a finding with mechanistic ramifications for related GHKL ATPases and meiotic recombination machineries.
    1. Cell Biology

    Structure of cellular ESCRT-III spirals and their relationship to HIV budding

    Anil G Cashikar et al.
    Electron microscopy on native membranes reveals the shape and potential function of protein machinery responsible for budding vesicles and viruses away from the cytoplasm.
    1. Developmental Biology

    Inter-dependent apical microtubule and actin dynamics orchestrate centrosome retention and neuronal delamination

    Ioannis Kasioulis et al.
    Microtubules are nucleated by the centrosome of the primary cilium in the apical end-foot of neuroepithelial cells and inter-dependent microtubule and actin dynamics are required here to orchestrate delamination of newborn neurons.

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