1,147 results found
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    The homo-oligomerisation of both Sas-6 and Ana2 is required for efficient centriole assembly in flies

    Matthew A Cottee et al.
    The structure of the Ana2 Central Coiled-Coil Domain provides insight into how centriolar cartwheel components may be recruited and assembled, and indicates that cartwheel assembly involves more than just SAS-6 oligomerisation.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structure of the SAS-6 cartwheel hub from Leishmania major

    Mark van Breugel et al.
    The X-ray structure of the SAS-6 cartwheel hub from Leishmania major demonstrates that SAS-6 can be sufficient to determine centriolar cartwheel symmetry.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Mechanism of synergistic activation of Arp2/3 complex by cortactin and N-WASP

    Luke A Helgeson, Brad J Nolen
    Single-molecule TIRF microscopy, biochemical assays and mathematical modeling demonstrate how actin-branch nucleation by the Arp2/3 complex is coordinately regulated by two biochemically distinct activators.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    The Caenorhabditis elegans protein SAS-5 forms large oligomeric assemblies critical for centriole formation

    Kacper B Rogala et al.
    SAS-5 forms oligomers, through a trimeric coiled coil and novel dimeric domain, that are necessary for centriolar localisation of SAS-5 and for centriole duplication.
    1. Cell Biology

    Switch-like Arp2/3 activation upon WASP and WIP recruitment to an apparent threshold level by multivalent linker proteins in vivo

    Yidi Sun et al.
    Intersectin counterparts in yeast recruit WASP and WIP to endocytic sites to establish a robust multivalent SH3 domain-PRM interaction network which gives actin assembly onset a switch-like behavior in vivo.
    1. Cell Biology

    De novo centriole formation in human cells is error-prone and does not require SAS-6 self-assembly

    Won-Jing Wang et al.
    Canonical centriole duplication is much less prone to errors than de novo synthesis of centrioles, but neither depends on self-oligomerization of the centriole protein SAS-6.
    1. Developmental Biology

    Three-dimensional reconstruction of a whole insect reveals its phloem sap-sucking mechanism at nano-resolution

    Xin-Qiu Wang et al.
    3D reconstruction for an insect provides new internal structures at nanometer resolution, and the reconstructed feeding insect reveals unexpected contraction of stylet protractors and suggested a novel phloem sap-sucking model.
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    The dimeric Golgi protein Gorab binds to Sas6 as a monomer to mediate centriole duplication

    Agnieszka Fatalska et al.
    The dual functional protein, Gorab, associates with the Golgi as a dimer but as a monomer with the procentriole cartwheel protein, Sas6, to mediate centriole duplication.
    1. Cell Biology

    Loss of Ena/VASP interferes with lamellipodium architecture, motility and integrin-dependent adhesion

    Julia Damiano-Guercio et al.
    Ena/VASP proteins act as positive regulators of cell motility and are required for the formation of microspikes, as opposed to filopodia that can arise from distinct molecular mechanisms.
    1. Ecology
    2. Evolutionary Biology

    Nitric oxide radicals are emitted by wasp eggs to kill mold fungi

    Erhard Strohm et al.
    To protect their food and themselves against detrimental mould fungi, the eggs of a wasp species synthesize and emit remarkable amounts of gaseous nitrogen oxides that are highly effective antimicrobials.

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