Journal
EMBO JOURNAL
Volume 28, Issue 17, Pages 2511-2531Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/emboj.2009.173
Keywords
centromere; chromosome segregation; force generation; kinetochore; spindle assembly checkpoint
Categories
Funding
- Association for International Cancer Resarch (AICR)
- Telethon Foundation
- European Commission
- Italian Association for Cancer Research (AIRC)
- Fondo di Investimento per la Ricerca di Base (FIRB)
- Italian Ministry of Health
- Cariplo Foundations
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Kinetochores are large protein assemblies built on chromosomal loci named centromeres. The main functions of kinetochores can be grouped under four modules. The first module, in the inner kinetochore, contributes a sturdy interface with centromeric chromatin. The second module, the outer kinetochore, contributes a microtubule-binding interface. The third module, the spindle assembly checkpoint, is a feedback control mechanism that monitors the state of kinetochore-microtubule attachment to control the progression of the cell cycle. The fourth module discerns correct from improper attachments, preventing the stabilization of the latter and allowing the selective stabilization of the former. In this review, we discuss how the molecular organization of the four modules allows a dynamic integration of kinetochore-microtubule attachment with the prevention of chromosome segregation errors and cell-cycle progression. The EMBO Journal (2009) 28, 2511-2531. doi: 10.1038/emboj.2009.173; Published online 23 July 2009 Subject Categories: cell cycle; structural biology
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