Nitrogen Starvation-induced Phosphorylation of Ras1 Protein and Its Potential Role in Nutrient Signaling and Stress Response.

Abstract excerpt

Ras1 is a small GTPase in the budding yeast Saccharomyces cerevisiae that regulates nutrient signaling. It has been shown that Ras1 undergoes phosphorylation, but the functional consequences and regulation of Ras1 phosphorylation remain unknown. Here we identify Ser-226 as an important residue for Ras1 phosphorylation, as mutating this residue to an alanine drastically diminishes the level of Ras1...

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