668 results found
    1. Cell Biology
    2. Physics of Living Systems

    Spatiotemporal organization of branched microtubule networks

    Akanksha Thawani et al.
    A sequential reaction pathway involving TPX2, augmin and γ-TuRC governs the assembly and architecture of branched microtubule networks.
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    The kinesin-5 tail domain directly modulates the mechanochemical cycle of the motor domain for anti-parallel microtubule sliding

    Tatyana Bodrug et al.
    Biochemical, single molecule, cell and structural biology studies reveal an interaction between the kinesin-5 tail and motor domains regulating high-force production, which is critical for microtubule sliding motility.
    1. Cell Biology

    Kinetochores attached to microtubule-ends are stabilised by Astrin bound PP1 to ensure proper chromosome segregation

    Duccio Conti et al.
    Human chromosome-microtubule attachments are stabilised by Astrin-mediated dynamic delivery of PP1 phosphatase to the attachment site, which ensures the normal segregation of chromosomes.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Autocatalytic microtubule nucleation determines the size and mass of Xenopus laevis egg extract spindles

    Franziska Decker et al.
    Quantitative microscopy and theory show that the size of Xenopus laevis egg extract spindles is controlled by a spatially-regulated autocatalytic growth mechanism driven by microtubule-stimulated microtubule nucleation.
    1. Structural Biology and Molecular Biophysics

    Conserved mechanisms of microtubule-stimulated ADP release, ATP binding, and force generation in transport kinesins

    Joseph Atherton et al.
    Cryo-electron microscopy reconstructions of two microtubule-bound transport kinesins at 7 Å resolution reveal how microtubule track binding stimulates ADP release, primes the active site for ATP binding and enables force generation.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Astrin-SKAP complex reconstitution reveals its kinetochore interaction with microtubule-bound Ndc80

    David M Kern et al.
    Biochemical and cell biological analyses reveal that the Astrin-SKAP complex acts to stabilize kinetochore-microtubule interactions through its intrinsic microtubule binding activity and its association with the Ndc80 complex, the core component of the kinetochore-microtubule interface.
    1. Cell Biology
    2. Plant Biology

    Orchestration of microtubules and the actin cytoskeleton in trichome cell shape determination by a plant-unique kinesin

    Juan Tian et al.
    Kinesin-like calmodulin-binding protein integrates microtubules and F-actin to assemble the cytoskeletal configuration needed for trichome formation.
    1. Cell Biology

    The influence of dynein processivity control, MAPs, and microtubule ends on directional movement of a localising mRNA

    Harish Chandra Soundararajan, Simon L Bullock
    In vitro reconstitution of mRNA motility reveals the basis of directionally biased motion by groups of motors, their response to potential obstacles, and the consequences of reaching microtubule ends.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Cytoplasmic dynein crosslinks and slides anti-parallel microtubules using its two motor domains

    Marvin E Tanenbaum et al.
    The motor domains of dynein are sufficient to crosslink microtubules and slide them antiparallel to each other.
    1. Cell Biology

    In vitro reconstitution of branching microtubule nucleation

    Ammarah Tariq et al.
    Purification of two conserved protein complexes, the γ-TuRC and Augmin, using a simple affinity technique, demonstrates that they are necessary and sufficient for the essential phenomenon of branching microtubule nucleation.

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