Neurofibromin Homologs Ira1 and Ira2 Affect Glycerophosphoinositol Production and Transport in Saccharomyces cerevisiae▿

AUTOR(ES)
FONTE

American Society for Microbiology (ASM)

RESUMO

Saccharomyces cerevisiae produces extracellular glycerophosphoinositol through phospholipase-mediated turnover of phosphatidylinositol and transports glycerophosphoinositol into the cell upon nutrient limitation. A screening identified the RAS GTPase-activating proteins Ira1 and Ira2 as required for utilization of glycerophosphoinositol as the sole phosphate source, but the RAS/cyclic AMP pathway does not appear to be involved in the growth phenotype. Ira1 and Ira2 affect both the production and transport of glycerophosphoinositol.

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