Regulation of kinetochore-microtubule attachments by Aurora B kinase

Biochem Soc Trans. 2009 Oct;37(Pt 5):976-80. doi: 10.1042/BST0370976.

Abstract

Accurate segregation of chromosomes in mitosis requires that spindle microtubules attach sister kinetochores to opposite poles of the mitotic spindle (biorientation). To achieve biorientation of all chromosomes, incorrect attachments are selectively destabilized, providing a fresh opportunity to biorient, whereas correct attachments are stabilized. Tension across the centromere may be the signal that distinguishes different attachment states, as spindle microtubules pull bioriented sister kinetochores in the opposite direction. Destabilization of incorrect attachments requires the Ipl1/Aurora B kinase, which phosphorylates kinetochore substrates that directly interact with microtubules. The present review focuses on how Aurora B regulates attachments in response to centromere tension.

Publication types

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

MeSH terms

  • Animals
  • Aurora Kinase B
  • Aurora Kinases
  • Centromere / metabolism
  • Chromosome Segregation
  • Humans
  • Kinetochores / metabolism*
  • Microtubules / metabolism*
  • Protein-Serine-Threonine Kinases / metabolism*
  • Spindle Apparatus / metabolism
  • Stress, Mechanical

Substances

  • AURKB protein, human
  • Aurora Kinase B
  • Aurora Kinases
  • Protein-Serine-Threonine Kinases