Abstract
Completion of mitosis in budding yeast is triggered by activation of the protein phosphatase Cdc14, which is the ultimate effector of a signalling cascade, known as the mitotic exit network. Cdc14 activation leads to eradication of mitotic kinase activity, which is pivotal for mitotic exit and cytokinesis in all eukaryotes. The complexity in mitotic exit regulation is underscored by the recent discovery of a novel network, the so-called FEAR pathway that regulates early Cdc14 activation. Surprisingly, this has revealed an unexpected role for Spo12, a protein involved in meiosis, in Cdc14 activation. In this review, we will discuss these findings together with recent advances in deciphering the function of the FEAR circuit, which has unravelled an exciting new side of Cdc14. Key Words:Mitotic exit, Cdc14 activation, FEAR pathway, Spo12, Budding yeast
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