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Microtubule structure at 8 Å resolution

  • Huilin Li
  • , David J. DeRosier
  • , William V. Nicholson
  • , Eva Nogales
  • , Kenneth H. Downing

    Research output: Contribution to journalArticlepeer-review

    Abstract

    We have obtained a 3D reconstruction of intact microtubules, using cryoelectron microscopy and image processing, at a resolution of about 8 Å, sufficient to resolve much of the secondary structure. The level of detail in the map allows docking of the tubulin structure previously determined by electron crystallography, with very strong constraints, providing several important insights not previously available through docking tubulin into lower-resolution maps. This work provides an improved picture of the interactions between adjacent protofilaments, which are responsible for microtubule stability, and also suggests that some structural features are different in microtubules from those in the zinc sheets with which the tubulin structure was determined.
    Original languageEnglish
    Pages (from-to)1317-1328
    Number of pages12
    JournalStructure
    Volume10
    Issue number10
    DOIs
    Publication statusPublished - 2002

    Keywords

    • TUBULIN
    • microtubules
    • electron crystallography
    • Protein structure
    • dynamic instability

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