| Condensin, chromatin crossbarring and chromosome condensation. | |
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MedLine Citation:
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PMID: 23218009 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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The processes underlying the large-scale reorganisation of chromatin in mitosis that form compact mitotic chromosomes and ensure the fidelity of chromosome segregation during cell division still remain obscure. The chromosomal condensin complex is a major molecular effector of chromosome condensation and segregation in diverse organisms ranging from bacteria to humans. Condensin is a large, evolutionarily conserved, multisubunit protein assembly composed of dimers of the structural maintenance of chromosomes (SMC) family of ATPases, clasped into topologically closed rings by accessory subunits. Condensin binds to DNA dynamically, in a poorly understood cycle of ATP-modulated conformational changes, and exhibits the ability to positively supercoil DNA. During mitosis, condensin is phosphorylated by the cyclin-dependent kinase (CDK), Polo and Aurora B kinases in a manner that correlates with changes in its localisation, dynamics and supercoiling activity. Here we review the reported architecture, biochemical activities and regulators of condensin. We compare models of bacterial and eukaryotic condensins in order to uncover conserved mechanistic principles of condensin action and to propose a model for mitotic chromosome condensation. |
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Authors:
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Rahul Thadani; Frank Uhlmann; Sebastian Heeger |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Current biology : CB Volume: 22 ISSN: 1879-0445 ISO Abbreviation: Curr. Biol. Publication Date: 2012 Dec |
Date Detail:
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Created Date: 2012-12-10 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9107782 Medline TA: Curr Biol Country: England |
Other Details:
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Languages: eng Pagination: R1012-21 Citation Subset: IM |
Copyright Information:
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Copyright © 2012 Elsevier Ltd. All rights reserved. |
Affiliation:
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Chromosome Segregation Laboratory, Cancer Research UK London Research Institute, 44 Lincoln's Inn Fields, London WC2A 3LY, UK. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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