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・ Phosphatidylcholine desaturase
・ Phosphatidylcholine synthase
・ Phosphatidylcholine transfer protein
・ Phosphatidylcholine—dolichol O-acyltransferase
・ Phosphatidylcholine—retinol O-acyltransferase
・ Phosphatidylcholine—sterol O-acyltransferase
・ Phosphatidylethanol
・ Phosphatidylethanolamine
・ Phosphatidylethanolamine binding protein 1
・ Phosphatidylethanolamine N-methyltransferase
・ Phosphatidylglycerol
・ Phosphatidylglycerol—membrane-oligosaccharide glycerophosphotransferase
・ Phosphatidylglycerophosphatase
・ Phosphatidylinositol
・ Phosphatidylinositol (3,4,5)-trisphosphate
Phosphatidylinositol 3,4-bisphosphate
・ Phosphatidylinositol 3,5-bisphosphate
・ Phosphatidylinositol 3-kinase-related kinase
・ Phosphatidylinositol 3-phosphate
・ Phosphatidylinositol 4,5-bisphosphate
・ Phosphatidylinositol 4-phosphate
・ Phosphatidylinositol 5-phosphate
・ Phosphatidylinositol a-mannosyltransferase
・ Phosphatidylinositol bisphosphate
・ Phosphatidylinositol deacylase
・ Phosphatidylinositol diacylglycerol-lyase
・ Phosphatidylinositol N-acetylglucosaminyltransferase
・ Phosphatidylinositol phosphate
・ Phosphatidylinositol phosphate kinases
・ Phosphatidylinositol transfer protein


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Phosphatidylinositol 3,4-bisphosphate : ウィキペディア英語版
Phosphatidylinositol 3,4-bisphosphate

Phosphatidylinositol (3,4)-bisphosphate (PtdIns(3,4)''P''2) is a minor phospholipid component of cell membranes, yet an important second messenger. The generation of PtdIns(3,4)''P''2 at the plasma membrane activates a number of important cell signaling pathways.
PtdIns(3,4)''P''2 is dephophosphorylated by the phosphatase INPP4B on the 4 position of the inositol ring and by the TPTE (transmembrane phosphatases with tensin homology) family of phosphatases on the 3 position of the inositol ring.
The PH domain in a number of proteins binds to PtdIns(3,4)''P''2 including the PH domain in PKB. The generation of PtdIns(3,4)''P''2 at the plasma membrane upon the activation of class I PI 3-kinases and SHIP phosphatases causes these proteins to translocate to the plasma membrane, thereby affecting their activity.
== References ==



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