Phosphatidylinositol-5,4-bisphosphate, the precursor to second messengers of the phosphoinositide signal transduction pathways, is thought to be involved in the regulation of secretion, cell proliferation, differentiation, and motility. The protein encoded by this gene is one of a family of enzymes capable of catalyzing the phosphorylation of phosphatidylinositol-5-phosphate on the fourth hydroxyl of the myo-inositol ring to form phosphatidylinositol-5,4-bisphosphate. The amino acid sequence of this enzyme does not show homology to other kinases, but the recombinant protein does exhibit kinase activity. This gene is a member of the phosphatidylinositol-5-phosphate 4-kinase family.
Protein Aliases: 1-phosphatidylinositol 5-phosphate 4-kinase 2-alpha; 1-phosphatidylinositol-4-phosphate kinase; 1-phosphatidylinositol-4-phosphate-5-kinase; 1-phosphatidylinositol-5-phosphate 4-kinase 2-alpha; 1-phosphatidylinositol-5-phosphate 4-kinase A; Diphosphoinositide kinase 2-alpha; Phosphatidylinositol 5-Phosphate 4-Kinase; Phosphatidylinositol 5-phosphate 4-kinase type II alpha; Phosphatidylinositol 5-phosphate 4-kinase type-2 alpha; phosphatidylinositol-4-phosphate 5-kinase, type II, alpha; phosphatidylinositol-5-phosphate 4-kinase type-2 alpha; phosphatidylinositol-5-phosphate 4-kinase, type II, alpha; PI(5)P 4-kinase type II alpha; PI5P4Kalpha; PIP4KII-alpha; PIP5KIIalpha; PIP5KIII; PIPK2 alpha; PtdIns(4)P-5-kinase B isoform; PtdIns(4)P-5-kinase C isoform; PtdIns(5)P-4-kinase isoform 2-alpha; type II phosphatidylinositol-4-phosphate 5-kinase 53 K isoform
Gene Aliases: AW742916; PI5P4KA; PIP4K2A; Pip4ka; PIP5K2; PIP5K2A; PIP5KII-alpha; PIP5KIIA; PIPK
Molecular Function: kinase