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Mol Microbiol. 1999 May;32(4):671-80.

The protein kinase C-mediated MAP kinase pathway involved in the maintenance of cellular integrity in Saccharomyces cerevisiae.

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Institut für Mikrobiologie, Heinrich-Heine-Universität Düsseldorf, Universitätsstr. 1, Geb. 26.12, D-40225 Düsseldorf, Germany.


Signal transduction mediated by the single yeast isozyme of protein kinase C (Pkc1p) is essential for the maintenance of cellular integrity in this model eukaryote. The past few years have seen a dramatic increase in our knowledge of the upstream regulatory factors that modulate Pkc1p activity (e.g. Tor2p, Rom1p, Rom2p, Rho1p, Slg1p, Mid2p) and of the downstream targets of the MAP kinase cascade triggered by it (e.g. Rlm1p, SBF complex). The picture that has emerged connects this pathway to a variety of other cellular processes, such as cell cycle progression (Cdc28p, Swi4p), mating (Ste20p), nutrient sensing (Ira1p), calcium homeostasis (calcineurin, Mid2p, Fks2p) and the structural dynamics of the cytoskeleton (Spa1p, Bni1p).

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