Abstract:
:Condensin complexes play crucial roles in chromosome condensation that is a fundamental process to establish the "rod-like" shape of chromosome structure in mitosis. Failure of the chromosome assembly causes chromosome segregation errors and subsequent genomic instability. However, a molecular mechanism that controls condensin function for the chromosomal organization has not been fully understood. Here, we show that the abundance of CAP-H2, one of the condensin II subunits, is fluctuated during the cell cycle in accordance with Plk1 kinase activity. Inhibition of Plk1 leads to Cdc20-mediated degradation of CAP-H2 in mitosis. Plk1 phosphorylation of CAP-H2 at Ser288 is required for the accumulation of CAP-H2 and accurate chromosomal condensation during prophase. These findings suggest that Plk1 phosphorylation regulates condensin II function by modulating CAP-H2 expression levels to facilitate proper mitotic chromosome organization.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Kagami Y,Ono M,Yoshida Kdoi
10.1038/s41598-017-05986-7subject
Has Abstractpub_date
2017-07-17 00:00:00pages
5583issue
1issn
2045-2322pii
10.1038/s41598-017-05986-7journal_volume
7pub_type
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