103 results found
    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. 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.
    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 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. Cell Biology
    2. Evolutionary Biology

    Characterization of TSET, an ancient and widespread membrane trafficking complex

    Jennifer Hirst et al.
    A missing link between the AP complexes and COPI sheds light on the evolution of vesicle coat proteins and trafficking pathways in the earliest eukaryotes.
    1. Cell Biology

    Sec24 phosphorylation regulates autophagosome abundance during nutrient deprivation

    Saralin Davis et al.
    Phosphorylation of a core trafficking component, the COPII coat subunit Sec24, regulates cross-talk between the secretory and autophagy machinery during starvation.
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    TANGO1 builds a machine for collagen export by recruiting and spatially organizing COPII, tethers and membranes

    Ishier Raote et al.
    TANGO1 creates a sub-compartment at the endoplasmic reticulum, to segregate and export fully assembled bulky cargoes.
    1. Cell Biology

    The ULK1-FBXW5-SEC23B nexus controls autophagy

    Yeon-Tae Jeong et al.
    The control of SEC23B degradation by SCFFBXW5 and ULK1 regulates the autophagy.
    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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