17 results found
    1. Biophysics and Structural Biology
    2. Cell Biology

    Vesicles: Looking inside the cell

    Eric C Arakel, Blanche Schwappach
    Advances in imaging techniques have shed new light on the structure of vesicles formed by COPI protein complexes.
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    1. Biophysics and Structural Biology
    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. Biophysics and Structural Biology

    Structure of a type IV pilus machinery in the open and closed state

    Vicki AM Gold et al.
    Electron cryo-tomography reveals a huge conformational change in the secretin domain of the type IV pilus machinery that occurs when the channel opens for pilus extrusion.
    1. Biophysics and Structural Biology
    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. Biochemistry
    2. Biophysics and Structural Biology

    The role of Cdc42 and Gic1 in the regulation of septin filament formation and dissociation

    Yashar Sadian et al.
    Imaging with electron microscopy and cryo-electron tomography reveals that competition between Cdc42 and Gic1 for the same subunit within septins controls the formation and breakdown of septin filaments.
  1. Nuclear pore assembly proceeds by an inside-out extrusion of the nuclear envelope

    Shotaro Otsuka et al.
    Nuclear pores assemble asymmetrically, by an inside-out evagination of the inner nuclear membrane that grows in diameter and depth until it fuses with the flat outer nuclear membrane.
    1. Microbiology and Infectious Disease

    Cryo-electron tomography reveals novel features of a viral RNA replication compartment

    Kenneth J Ertel et al.
    Cryo-electron tomography unveils striking new structural components of positive-strand virus RNA replication compartments, greatly advancing mechanistic insights into the structure, assembly, function and control of these critical complexes.
    1. Biophysics and Structural Biology

    Bovine F1Fo ATP synthase monomers bend the lipid bilayer in 2D membrane crystals

    Chimari Jiko et al.
    The transmembrane shape of the F1Fo ATP synthase monomer provides the molecular basis of high curvature at the ridges of mammalian mitochondrial cristae.
    1. Biochemistry
    2. Biophysics and Structural Biology

    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. Biophysics and Structural Biology
    2. Plant Biology

    Native architecture of the Chlamydomonas chloroplast revealed by in situ cryo-electron tomography

    Benjamin D Engel et al.
    The first 3D views of the native algal chloroplast provide new insights into thylakoid biogenesis, photosynthesis, and carbon fixation.

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