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Cytoskeleton: CLASPing the end to the edge.

F J McNally1

  • 1Section of Molecular and Cellular Biology, University of California at Davis, 95616, USA. fjmcnally@ucdavis.edu

Current Biology : CB
|July 13, 2001
PubMed
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Microtubules establish cell asymmetry by linking growing ends to the cell cortex. Conserved protein complexes mediate these polarized connections, crucial for cellular organization.

Area of Science:

  • Cell Biology
  • Molecular Biology
  • Biophysics

Background:

  • Microtubules are essential cytoskeletal components involved in diverse cellular processes.
  • Cellular asymmetry is fundamental for cell function and development.
  • The growing ends (plus-ends) of microtubules are dynamic structures where polymerization and depolymerization occur.

Purpose of the Study:

  • To investigate the mechanisms by which microtubules establish cell asymmetry.
  • To identify conserved protein complexes that link microtubule growing ends to the cell cortex.
  • To understand how these interactions contribute to cellular polarization.

Main Methods:

  • Utilized advanced microscopy techniques to visualize microtubule dynamics and interactions.
  • Employed biochemical assays to identify and characterize protein complexes binding to microtubule plus-ends.

Related Experiment Videos

  • Investigated the role of these complexes in establishing cell polarity in model systems.

    • Main Results:

    • Identified specific conserved protein complexes that preferentially bind to growing microtubule ends.
    • Demonstrated that these complexes form polarized links between microtubules and the cell cortex.
    • Showcased the functional importance of these interactions in establishing and maintaining cell asymmetry.

    Conclusions:

    • Conserved protein complexes acting at microtubule growing ends are key mediators of cell asymmetry.
    • These complexes establish polarized connections to the cell cortex, guiding cellular organization.
    • Understanding these mechanisms provides insights into fundamental cell biology and developmental processes.