3,435 results found
    1. Cell Biology

    Waves of actin and microtubule polymerization drive microtubule-based transport and neurite growth before single axon formation

    Amy M Winans et al.
    Waves of polymerizing actin work in concert with microtubule polymerization to lay down more microtubules tracks and transiently increase microtubule-based transport into the growing neurite.
    1. Neuroscience

    A high affinity RIM-binding protein/Aplip1 interaction prevents the formation of ectopic axonal active zones

    Matthias Siebert et al.
    High affinity interactions with transport adaptors are important to shield the interaction surfaces of cytomatrix components to block fatal premature oligomerization of active zone proteins during axonal transport.
    1. Cell Biology
    2. Physics of Living Systems

    Concerted action of kinesins KIF5B and KIF13B promotes efficient secretory vesicle transport to microtubule plus ends

    Andrea Serra-Marques et al.
    The function and distribution of kinesin motors on exocytotic vesicles is dissected and visualized through a combination of gene knockout experiments, high-resolution microscopy and advanced data analysis.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    A general method for determining secondary active transporter substrate stoichiometry

    Gabriel A Fitzgerald et al.
    A method for determining how many ions are required to drive transport in an electrogenic secondary active transporter will help understand the mechanisms of bacterial transporters whose structures have been solved.
    1. Computational and Systems Biology
    2. Neuroscience

    Dendritic trafficking faces physiologically critical speed-precision tradeoffs

    Alex H Williams et al.
    A simple model of active transport in neurons allows intracellular cargo to find sites of demand using only local signals, but predicts long delays in distributing cargo throughout a dendritic tree.
    1. Cell Biology

    A disassembly-driven mechanism explains F-actin-mediated chromosome transport in starfish oocytes

    Philippe Bun et al.
    On entry to meiosis, chromosomes scattered in the large oocyte nucleus of starfish are collected by an F-actin network, which contracts by an unexpected, myosin-independent mechanism based on local assembly and global disassembly of actin filaments.
    1. Cell Biology

    Single molecule imaging reveals a major role for diffusion in the exploration of ciliary space by signaling receptors

    Fan Ye et al.
    Membrane receptor proteins move through primary cilia largely by passive diffusion rather than by active intraflagellar transport.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Coordinated recruitment of Spir actin nucleators and myosin V motors to Rab11 vesicle membranes

    Olena Pylypenko et al.
    Components of a Spir:MyoV:Rab11 complex are recruited synergistically to coordinate actin tracks generation and myosin motor activity in vesicle transport processes.
    1. Structural Biology and Molecular Biophysics

    Structural insights into sodium transport by the oxaloacetate decarboxylase sodium pump

    Xin Xu et al.
    The structure of the membrane-integrated components of a unique substrate decarboxylation-driven primary-active sodium pump provides insights into its transport mechanism.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structure and transport mechanism of the sodium/proton antiporter MjNhaP1

    Cristina Paulino et al.
    The inward-open and outward-open structures of MjNhaP1 explain the mechanism of electroneutral sodium-proton antiport across the cell membrane.

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