IMR Press / FBL / Volume 8 / Issue 4 / DOI: 10.2741/1129

Frontiers in Bioscience-Landmark (FBL) is published by IMR Press from Volume 26 Issue 5 (2021). Previous articles were published by another publisher on a subscription basis, and they are hosted by IMR Press on imrpress.com as a courtesy and upon agreement with Frontiers in Bioscience.

Open Access Article
Polo-like kinases in cell cycle checkpoint control
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1 Division of Molecular Carcinogenesis, Department of Medicine, New York Medical College, Valhalla, NY 10595, USA

Academic Editor: Wei Dai

Front. Biosci. (Landmark Ed) 2003, 8(4), 1128–1133; https://doi.org/10.2741/1129
Published: 1 September 2003
(This article belongs to the Special Issue Cell cycle checkpoint control)
Abstract

Recent studies from various eukaryotic model systems indicate that polo-like kinases (Plks) play an ever-increasing role in the regulation of cell cycle progression. Early genetic studies have demonstrated that Cdc5, a budding yeast counterpart of vertebrate Plks, is essential for mitosis. Mammalian Plks primarily localize to the microtubule organization center during interphase and undergo dramatic subcellular relocation during mitotic progression. Many key cell cycle regulators such as p53, Cdc25C, cyclin B, and components of the anaphase promoting complex are directly targeted by Plks. Although the exact mechanisms of action of these protein kinases in vivo remain to be elucidated, Plks appear to orchestrate various cell cycle checkpoints (intra-S phase, G2/M transition, spindle assembly, and cytokinesis checkpoints) that protect cells against genetic instability during cell division.

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