Title : Phosphorylation of importin-α1 by CDK1-cyclin B1 controls mitotic spindle assembly.

Pub. Date : 2019 Sep 23

PMID : 31434716






1 Functional Relationships(s)
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1 Here, we show that human importin-alpha1 is regulated during the cell cycle and is phosphorylated at two sites (threonine 9 and serine 62) during mitosis by the major mitotic protein kinase CDK1-cyclin B. Mutational analysis indicates that the mitotic phosphorylation of importin-alpha1 inhibits its binding to importin-beta and promotes the release of TPX2 and KIFC1, which are then targeted like importin-beta to the spindle. Threonine cyclin dependent kinase 1 Homo sapiens