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Updated: Jul 14, 2026

Assay for Adhesion and Agar Invasion in S. cerevisiae
Published on: November 8, 2006
Functional characterization of human and fungal MAP kinases in Saccharomyces cerevisiae
Rebeca Alonso-Monge1, Tomás Ureña, César Nombela
1Departamento de Microbiología II, Facultad de Farmacia, Universidad Complutense de Madrid, Plaza de Ramón y Cajal s/n, E-28040 Madrid, Spain. realonso@farm.ucm.es
Abstract:
A functional comparison of three human SAPKs with fungal Hog1p was undertaken, using Saccharomyces cerevisiae as a heterologous expression system. We characterized the role of mammalian MAP kinases in sensitivity to both osmotic and oxidative stress of a S. cerevisiae hog1 mutant. Western blot analyses indicated that S. cerevisiae can only phosphorylate mammalian MAP kinases in response to osmotic stress but not to oxidative stress, while morphogenetic defects characteristic of hog1 mutants under hyperosmotic stress are only suppressed by fungal and not mammalian Hog1p. Our data demonstrate the functional conservation of MAPKs although they also evidence differential aspects among the three human SAPKs and the fungal MAPKs.
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