119 results found
    1. Cell Biology

    Autophagy: COPII vesicles and the expansion of the phagophore

    Catherine Rabouille
    A new study has identified the proteins that adapt COPII vesicles to the needs of starving cells.
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    1. Cell Biology

    COPI mediates recycling of an exocytic SNARE by recognition of a ubiquitin sorting signal

    Peng Xu et al.
    COPI vesicle coat protein recognizes a ubiquitin sorting signal on an exocytic v-SNARE to mediate recycling.
    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. Cell Biology

    Splicing variation of BMP2K balances abundance of COPII assemblies and autophagic degradation in erythroid cells

    Jaroslaw Cendrowski et al.
    Erythroid-enriched BMP2K kinase, in addition to its predicted function in endocytosis, regulates distribution and abundance of COPII assemblies and autophagic degradation through opposing actions of its two splicing variants.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Phosphatidylinositol 3-kinase and COPII generate LC3 lipidation vesicles from the ER-Golgi intermediate compartment

    Liang Ge et al.
    Building on previous work (Ge et al., 2013), it is shown that the ER-Golgi intermediate compartment is a platform for the production of COPII vesicles as precursor membranes for the lipidation of LC3, which is an essential step in autophagosome biogenesis.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    The structure of the COPI coat determined within the cell

    Yury S Bykov et al.
    Cryo-electron tomography of COPI vesicles in the Golgi reveals coat structure, disassembly dynamics, cargo binding, and morphological variability.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    ER retention is imposed by COPII protein sorting and attenuated by 4-phenylbutyrate

    Wenfu Ma et al.
    The COPII coat protein, in association with p24 machinery molecules, actively excludes misfolded and resident proteins from endoplasmic reticulum-derived transport vesicles.
    1. Cell Biology

    COPI selectively drives maturation of the early Golgi

    Effrosyni Papanikou et al.
    Inactivation of the COPI vesicle coat in yeast reveals that COPI recycles early but not late Golgi proteins.
    1. Cell Biology

    Inter-Golgi transport mediated by COPI-containing vesicles carrying small cargoes

    Patrina A Pellett et al.
    Evidence that certain proteins can be transported between Golgi via structures that resemble COPI vesicles suggests that these vesicles could also be involved in the transport of proteins from the cis to the trans face of the Golgi.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    The structure of the COPII transport-vesicle coat assembled on membranes

    Giulia Zanetti et al.
    A structure of the complete, membrane bound, COPII coat solved by sub-tomogram averaging reveals the arrangement of all protein subunits on the membrane and suggests a mechanism for coating heterogeneously-shaped carriers.

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