Serine/threonine-protein kinase that performs several important functions throughout M phase of the cell cycle, including the regulation of centrosome maturation and spindle assembly, the removal of co...[+]

Serine/threonine-protein kinase that performs several important functions throughout M phase of the cell cycle, including the regulation of centrosome maturation and spindle assembly, the removal of cohesins from chromosome arms, the inactivation of anaphase-promoting complex/cyclosome (APC/C) inhibitors, and the regulation of mitotic exit and cytokinesis. Polo-like kinase proteins acts by binding and phosphorylating proteins are that already phosphorylated on a specific motif recognized by the POLO box domains. Phosphorylates cdc25, pkmyt1/myt1, stag2/sa2, tpx2. Plays multiple essential roles during mitosis. Phosphorylates the N-terminal domain of cdc25, which leads to cyclin b-cdc2 activation and mitotic entry. Also required for organization of bipolar spindles, and for exit from mitosis. Involved in kinetochore functions and sister chromatid cohesion by phosphorylating stag2/sa2. [-]

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