The function of truncated MEK1 protein in a G2 phase cell cycle delay and in mitosis. Understanding cell proliferation.

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Intracellular signaling pathways controlling cell growth are often mutated in cancers and other hyperproliferative diseases. Understanding precisely how these pathways operate and how mutations of these pathways can contribute to uncontrolled growth can readily provide new targets for preventative therapies or cures. We have identified a novel mechanism regulating one component of a well studied pathway, the MAPK pathway, and new functions for this component. The contribution of this novel component to mechanisms involved in regulating cell growth previously through to be controlled by the canonical MAPK pathway could change our understanding of the fundamental mechanisms controlling cell growth.