831 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. 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. Cell Biology

    Re-examining the role of Drosophila Sas-4 in centrosome assembly using two-colour-3D-SIM FRAP

    Paul T Conduit et al.
    Building on previous work (Conduit et al., 2014), and contrary to what was previously thought, it is shown that key centrosomal proteins are not recruited to centrosomes as part of large multi-protein assemblies.
    1. Cell Biology

    Pericentrin-mediated SAS-6 recruitment promotes centriole assembly

    Daisuke Ito et al.
    Newly discovered interaction between fission yeast SPB and animal centriole components reveals that pericentrin not only functions as a microtubule-nucleator, but also promotes centriole assembly in animals.
    1. Cell Biology

    Centriolar SAS-7 acts upstream of SPD-2 to regulate centriole assembly and pericentriolar material formation

    Kenji Sugioka et al.
    A genetic screen and live cell imaging show that a newly identified coiled-coil protein called SAS-7 is the earliest acting factor in centriole assembly yet identified in the roundworm Caenorhabditis elegans.
    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. Microbiology and Infectious Disease

    Mycobacterium tuberculosis SatS is a chaperone for the SecA2 protein export pathway

    Brittany K Miller et al.
    SatS of Mycobacterium tuberculosis is a new protein export chaperone with a role in exporting proteins by the specialized SecA2 pathway and a role in intracellular growth in macrophages.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Insights into HIV-1 proviral transcription from integrative structure and dynamics of the Tat:AFF4:P-TEFb:TAR complex

    Ursula Schulze-Gahmen et al.
    The crystal structure of the trans-activation response region (TAR) bound to HIV-1 Tat and an elongation factor, together with HDX, SHAPE, SAXS, and integrative modeling, shows how TAR binds this complex in two ways.

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