600 results found
    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
    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. 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. 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. 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. 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. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structural insight into TPX2-stimulated microtubule assembly

    Rui Zhang et al.
    A combination of cryo-electron microscopy of TPX2 bound to microtubules and in vitro reconstitution experiments reveals a novel microtubule interaction mode that explains how TPX2 promotes microtubule nucleation and stabilization.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    A tethered delivery mechanism explains the catalytic action of a microtubule polymerase

    Pelin Ayaz et al.
    Using linked TOG domains that each bind a curved conformation of αβ-tubulin, a microtubule polymerase catalyzes fast elongation by concentrating αβ-tubulin near the polymer end.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Kinesin Kip2 enhances microtubule growth in vitro through length-dependent feedback on polymerization and catastrophe

    Anneke Hibbel et al.
    The budding yeast kinesin Kip2 is a polymerase that uses its processive motility in a positive feedback loop to promote microtubule growth.

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