The contribution of αβ-tubulin curvature to microtubule dynamics

J Cell Biol. 2014 Nov 10;207(3):323-34. doi: 10.1083/jcb.201407095.

Abstract

Microtubules are dynamic polymers of αβ-tubulin that form diverse cellular structures, such as the mitotic spindle for cell division, the backbone of neurons, and axonemes. To control the architecture of microtubule networks, microtubule-associated proteins (MAPs) and motor proteins regulate microtubule growth, shrinkage, and the transitions between these states. Recent evidence shows that many MAPs exert their effects by selectively binding to distinct conformations of polymerized or unpolymerized αβ-tubulin. The ability of αβ-tubulin to adopt distinct conformations contributes to the intrinsic polymerization dynamics of microtubules. αβ-Tubulin conformation is a fundamental property that MAPs monitor and control to build proper microtubule networks.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.
  • Review

MeSH terms

  • Animals
  • Humans
  • Microtubule-Associated Proteins / physiology
  • Microtubules / physiology
  • Microtubules / ultrastructure*
  • Protein Multimerization
  • Protein Stability
  • Protein Structure, Quaternary
  • Tubulin / chemistry*
  • Tubulin / ultrastructure

Substances

  • Microtubule-Associated Proteins
  • Tubulin