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

    Co-movement of astral microtubules, organelles and F-actin by dynein and actomyosin forces in frog egg cytoplasm

    James F Pelletier et al.
    Live imaging of multiple cytoplasmic networks in frog egg extracts calls for new models for how egg cytoplasm is physically organized during cleavage divisions.
    1. Cell Biology

    The microtubule polymerase Stu2 promotes oligomerization of the γ-TuSC for cytoplasmic microtubule nucleation

    Judith Gunzelmann et al.
    Biochemical and genetic approaches show that the XMAP215 homolog Stu2 directly interacts with the small gamma-tubulin complex and its recruitment factor Spc72 to instigate functions in cytoplasmic microtubule organization.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Bidirectional helical motility of cytoplasmic dynein around microtubules

    Sinan Can et al.
    Unlike other cytoskeletal motors that produce torque in a specific direction, cytoplasmic dynein generates torque in either direction, resulting in bidirectional helical motility along microtubules.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    Polo-like kinase Cdc5 regulates Spc72 recruitment to spindle pole body in the methylotrophic yeast Ogataea polymorpha

    Hiromi Maekawa et al.
    Cdc5-dependent SPB regulation is linked to delayed cytoplasmic microtubule organization in Ogataea polymorpha.
    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

    Exportin Crm1 is repurposed as a docking protein to generate microtubule organizing centers at the nuclear pore

    Xun X Bao et al.
    Microtubule nucleation from the nuclear envelope in fission yeast involves repurposing of nuclear export proteins for a non-export-related function, docking cytoplasmic proteins at nuclear pore complexes.
    1. Biochemistry and Chemical Biology

    Chemical structure-guided design of dynapyrazoles, cell-permeable dynein inhibitors with a unique mode of action

    Jonathan B Steinman et al.
    Analyses of the chemical structure of ciliobrevins led to dynein inhibitors with improved properties and higher potency.
    1. Cell Biology
    2. Computational and Systems Biology

    Remote control of microtubule plus-end dynamics and function from the minus-end

    Xiuzhen Chen et al.
    A mechanism for yeast centrosomes to differentiate the microtubule cytoskeleton.
    1. Cell Biology

    Localised dynactin protects growing microtubules to deliver oskar mRNA to the posterior cortex of the Drosophila oocyte

    Ross Nieuwburg et al.
    Dynactin acts as an anti-catastrophe factor that extends microtubule growth; posteriorly elucidating a new essential step in oskar mRNA localisation and providing a novel mechanism by which motor-dependent transport can amplify the polarity of MT networks.
    1. Structural Biology and Molecular Biophysics

    Cryo-EM of dynein microtubule-binding domains shows how an axonemal dynein distorts the microtubule

    Samuel E Lacey et al.
    Relion was used to solve structures of microtubules decorated with dynein microtubule-binding domains revealing that an axonemal dynein distorts the microtubule cross-sectional curvature.

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