Reference: Yoon S, et al. (2003) Yersinia effector YopJ inhibits yeast MAPK signaling pathways by an evolutionarily conserved mechanism. J Biol Chem 278(4):2131-5

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Abstract


Yersinia effector, YopJ, inhibits the innate immune response by blocking MAP kinase and NFkappaB signaling pathways in mammalian cells. Herein, YopJ is shown to disrupt the MAP kinase signaling pathways in Saccharomyces cerevisiae. Expression of YopJ in yeast blocks the ability of yeast to respond to alpha factor by disrupting activation of the pheromone signaling pathway upstream of the activation of the MAPK Fus3p. YopJ also blocks the high osmolarity growth (HOG) MAP kinase pathway in yeast upstream of the activation of the MAPK Hog1p. YopJ is proposed to block the MAP kinase pathways in yeast in a similar manner to the way it blocks mammalian signaling pathways, implicating that a novel, evolutionarily conserved mechanism of regulation is utilized for signal transduction by these pathways.

Reference Type
Journal Article
Authors
Yoon S, Liu Z, Eyobo Y, Orth K
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