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Predominant regulators of tubulin monomer-polymer partitioning and their implication for cell polarization.
Umeå University, Faculty of Medicine, Molecular Biology (Faculty of Medicine). (Gullberg)
Umeå University, Faculty of Medicine, Molecular Biology (Faculty of Medicine). (Gullberg)
Umeå University, Faculty of Medicine, Molecular Biology (Faculty of Medicine). (Gullberg)
2009 (English)In: Cellular and Molecular Life Sciences (CMLS), ISSN 1420-682X, E-ISSN 1420-9071, Vol. 66, no 20, 3263-3276 p.Article in journal (Refereed) Published
Abstract [en]

The microtubule-system organizes the cytoplasm during interphase and segregates condensed chromosomes during mitosis. Four unrelated conserved proteins, XMAP215/Dis1/TOGp, MCAK, MAP4 and Op18/stathmin, have all been implicated as predominant regulators of tubulin monomer-polymer partitioning in animal cells. However, while studies employing the Xenopus egg extract model system indicate that the partitioning is largely governed by the counteractive activities of XMAP215 and MCAK, studies of human cell lines indicate that MAP4 and Op18 are the predominant regulators of the interphase microtubule-array. Here, we review functional interplay of these proteins during interphase and mitosis in various cell model systems. We also review the evidence that MAP4 and Op18 have interphase-specific, counteractive and phosphorylation-inactivated activities that govern tubulin subunit partitioning in many mammalian cell types. Finally, we discuss evidence indicating that partitioning regulation by MAP4 and Op18 may be of significance to establish cell polarity.

Place, publisher, year, edition, pages
2009. Vol. 66, no 20, 3263-3276 p.
Keyword [en]
Microtubules, Oncoprotein 18, Microtubule-associated proteins, PAR1, MARK, XKCM1, Calmodulin, CaM-dependent kinase
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:umu:diva-32759DOI: 10.1007/s00018-009-0084-5PubMedID: 19585080OAI: oai:DiVA.org:umu-32759DiVA: diva2:305680
Available from: 2010-03-24 Created: 2010-03-24 Last updated: 2017-12-12Bibliographically approved

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Holmfeldt, PerSellin, Mikael EGullberg, Martin
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CiteExportLink to record
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Citation style
  • apa
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  • Other style
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