The Xenopus XMAP215 and Its Human Homologue TOG Proteins Interact with Cyclin B1 to Target p34cdc2 to Microtubules during Mitosis
Experimental Cell Research, ISSN: 0014-4827, Vol: 254, Issue: 2, Page: 249-256
2000
- 39Citations
- 19Captures
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
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Metrics Details
- Citations39
- Citation Indexes39
- 39
- CrossRef28
- Captures19
- Readers19
- 19
Article Description
Cytoskeleton reorganization, leading to mitotic spindle formation, is an M-phase-specific event and is controlled by maturation promoting factor (MPF: p34cdc2–cyclinB1 complex). It has previously been demonstrated that the p34cdc2–cyclin B complex associates with mitotic spindle microtubules and that microtubule-associated proteins (MAPs), in particular MAP4, might be responsible for this interaction. In this study, we report that another ubiquitous MAP, TOG in human and its homologue in Xenopus XMAP215, associates also with p34cdc2 kinase and directs it to the microtubule cytoskeleton. Costaining of Xenopus cells with anti-TOGp and anti-cyclin B1 antibodies demonstrated colocalization in interphase cells and also with microtubules throughout the cell cycle. Cyclin B1, TOG/XMAP215, and p34cdc2 proteins were recovered in microtubule pellets isolated from Xenopus egg extracts and were eluted with the same ionic strength. Cosedimentation of cyclin B1 with in vitro polymerized microtubules was detected only in the presence of purified TOG protein. Using a recombinant C-terminal TOG fragment containing a Pro-rich region, we showed that this domain is sufficient to mediate cosedimentation of cyclin B1 with microtubules. Finally, we demonstrated interaction between TOG/XMAP215 and cyclin B1 by co-immunoprecipitation assays. As XMAP215 was shown to be the only identified assembly promoting MAP which increases the rapid turnover of microtubules, the TOG/XMAP215–cyclin B1 interaction may be important for regulation of microtubule dynamics at mitosis.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0014482799947407; http://dx.doi.org/10.1006/excr.1999.4740; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0034141716&origin=inward; http://www.ncbi.nlm.nih.gov/pubmed/10640423; https://linkinghub.elsevier.com/retrieve/pii/S0014482799947407; https://dx.doi.org/10.1006/excr.1999.4740
Elsevier BV
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