Component of a complex required to localize phosphatidylinositol 4-kinase (PI4K) to the plasma membrane ( ). The complex acts as a regulator of phosphatidylinositol 4-phosphate (PtdIns(4)P) synthesis (Probable). In the complex, EFR3A probably acts as the membrane-anchoring component . Also involved in responsiveness to G-protein-coupled receptors; it is however unclear whether this role is direct or indirect .
Subcellular locations: Cell membrane, Cytoplasm, Cytosol
Palmitoylation anchors the protein to the plasma membrane ( ). A small amount is observed in the cytosol .