Nutrient-Regulated Antisense and Intragenic RNAs Modulate a Signal Transduction Pathway

ABSTRACT: The budding yeast Saccharomyces cerevisiae alters its gene expression profile in response to a change in nutrient availability. The PHO-system is a well-studied case in the transcriptional regulation responding to nutritional changes in which a set of genes (PHO genes) is expressed to activate phosphate (Pi) metabolism for adaptation to Pi-starvation. Pi-starvation triggers an inhibition of Pho85 kinase, leading to migration of unphosphorylated Pho4 transcriptional activator into the nucleus enabling expression of PHO genes. When Pi is sufficient, the Pho85 kinase phosphorylates Pho4 thereby excluding it from the nucleus and resulting in repression (i.e., lack of transcription) of PHO genes. The Pho85 kinase has a role in various cellular functions other than regulation of the PHO system,

ORGANISM(S): Saccharomyces cerevisiae

SUBMITTER: Katsuhiko Shirahige 

PROVIDER: E-GEOD-13350 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress