Stress resistance and signal fidelity independent of nuclear MAPK function.


Elevated external solute stimulates a conserved MAPK cascade that elicits responses that maintain osmotic balance. The yeast high-osmolarity glycerol (HOG) pathway activates Hog1 MAPK (mammalian ortholog p38alpha/SAPKalpha), which enters the nucleus and induces expression of >50 genes, implying that transcriptional up-regulation is necessary to cope with… (More)
DOI: 10.1073/pnas.0805797105


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