Reaction: a 1,2-diacylglycerol 3-phosphate + H2O = a 1,2-diacyl-sn-glycerol + phosphate
Glossary: a 1,2-diacylglycerol 3-phosphate = a 3-sn-phosphatidate a 1,2-diacyl-sn-glycerol = DAG
Other name(s): phosphatic acid phosphatase; acid phosphatidyl phosphatase; phosphatic acid phosphohydrolase; PAP, Lipin
Systematic name: diacylglycerol-3-phosphate phosphohydrolase
Comments: This enzyme catalyses the Mg2+-dependent dephosphorylation of a 1,2-diacylglycerol-3-phosphate, yielding a 1,2-diacyl-sn-glycerol (DAG), the substrate for de novo lipid synthesis via the Kennedy pathway and for the synthesis of triacylglycerol. In lipid signalling, the enzyme generates a pool of DAG to be used for protein kinase C activation. The mammalian enzymes are known as lipins.
Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, PDB, CAS registry number: 9025-77-8
References:
1. Smith, S.W., Weiss, S.B. and Kennedy, E.P. The enzymatic dephosphorylation of phosphatidic acids. J. Biol. Chem. 228 (1957) 915-922. [PMID: 13475370]
2. Carman, G.M. and Han, G.S. Phosphatidic acid phosphatase, a key enzyme in the regulation of lipid synthesis. J. Biol. Chem. 284 (2009) 2593-2597. [PMID: 18812320]