Acts as a magnesium-dependent phosphatidate phosphatase enzyme which catalyzes the conversion of phosphatidic acid to diacylglycerol during triglyceride, phosphatidylcholine and phosphatidylethanolamine biosynthesis and therefore controls the metabolism of fatty acids at different levels (PubMed:20231281, PubMed:29765047). Is involved in adipocyte differentiation (By similarity). Acts also as nuclear transcriptional coactivator for PPARGC1A/PPARA regulatory pathway to modulate lipid metabolism gene expression (By similarity). Recruited at the mitochondrion outer membrane and is involved in mitochondrial fission by converting phosphatidic acid to diacylglycerol (By similarity). a 1,2-diacyl-sn-glycero-3-phosphate + H2O = a 1,2-diacyl-sn-glycerol + phosphate 1-octadecanoyl-2-(4Z,7Z,10Z,13Z,16Z,19Z-docosahexaenoyl)-sn-glycero-3-phosphate + H2O = 1-octadecanoyl-2-(4Z,7Z,10Z,13Z,16Z,19Z-docosahexaenoyl)-sn-glycerol + phosphate 1-octadecanoyl-2-(5Z,8Z,11Z,14Z-eicosatetraenoyl)-sn-glycero-3-phosphate + H2O = 1-octadecanoyl-2-(5Z,8Z,11Z,14Z-eicosatetraenoyl)-sn-glycerol + phosphate 1-octadecanoyl-2-(9Z,12Z-octadecadienoyl)-sn-glycero-3-phosphate + H2O = 1-octadecanoyl-2-(9Z,12Z)-octadecadienoyl-sn-glycerol + phosphate 1-octadecanoyl-2-(9Z-octadecenoyl)-sn-glycero-3-phosphate + H2O = 1-octadecanoyl-2-(9Z-octadecenoyl)-sn-glycerol + phosphate 1-hexadecanoyl-2-(4Z,7Z,10Z,13Z,16Z,19Z-docosahexaenoyl)-sn-glycero-3-phosphate + H2O = 1-hexadecanoyl-2-(4Z,7Z,10Z,13Z,16Z,19Z-docosahexaenoyl)-sn-glycerol + phosphate 1,2-dioctadecanoyl-sn-glycero-3-phosphate + H2O = 1,2-dioctadecanoyl-sn-glycerol + phosphate 1-hexadecanoyl-2-(5Z,8Z,11Z,14Z-eicosatetraenoyl)-sn-glycero-3-phosphate + H2O = 1-hexadecanoyl-2-(5Z,8Z,11Z,14Z-eicosatetraenoyl)-sn-glycerol + phosphate 1-hexadecanoyl-2-(9Z,12Z-octadecadienoyl)-sn-glycero-3-phosphate + H2O = 1-hexadecanoyl-2-(9Z,12Z-octadecadienoyl)-sn-glycerol + phosphate 1-hexadecanoyl-2-(9Z-octadecenoyl)-sn-glycero-3-phosphate + H2O = 1-hexadecanoyl-2-(9Z-octadecenoyl)-sn-glycerol + phosphate 1,2-di-(4Z,7Z,10Z,13Z,16Z,19Z-docosahexaenoyl)-sn-glycero-3-phosphate + H2O = 1,2-di-(4Z,7Z,10Z,13Z,16Z,19Z-docosahexaenoyl)-sn-glycerol + phosphate 1,2-di-(5Z,8Z,11Z,14Z)-eicosatetraenoyl-sn-glycero-3-phosphate + H2O = 1,2-di-(5Z,8Z,11Z,14Z)-eicosatetraenoyl-sn-glycerol + phosphate 1,2-di-(9Z,12Z-octadecadienoyl)-sn-glycero-3-phosphate + H2O = 1,2-di-(9Z,12Z-octadecadienoyl)-sn-glycerol + phosphate 1,2-di-(9Z-octadecenoyl)-sn-glycero-3-phosphate + H2O = 1,2-di-(9Z-octadecenoyl)-sn-glycerol + phosphate 1,2-dihexadecanoyl-sn-glycero-3-phosphate + H2O = 1,2-dihexadecanoyl-sn-glycerol + phosphate 1-octadecanoyl-2-(4Z,7Z,10Z,13Z,16Z,19Z-docosahexaenoyl)-sn-glycero-3-phosphate + H2O = 1-octadecanoyl-2-(4Z,7Z,10Z,13Z,16Z,19Z-docosahexaenoyl)-sn-glycerol + phosphate 1-octadecanoyl-2-(5Z,8Z,11Z,14Z-eicosatetraenoyl)-sn-glycero-3-phosphate + H2O = 1-octadecanoyl-2-(5Z,8Z,11Z,14Z-eicosatetraenoyl)-sn-glycerol + phosphate 1-octadecanoyl-2-(9Z,12Z-octadecadienoyl)-sn-glycero-3-phosphate + H2O = 1-octadecanoyl-2-(9Z,12Z)-octadecadienoyl-sn-glycerol + phosphate 1-octadecanoyl-2-(9Z-octadecenoyl)-sn-glycero-3-phosphate + H2O = 1-octadecanoyl-2-(9Z-octadecenoyl)-sn-glycerol + phosphate 1-hexadecanoyl-2-(4Z,7Z,10Z,13Z,16Z,19Z-docosahexaenoyl)-sn-glycero-3-phosphate + H2O = 1-hexadecanoyl-2-(4Z,7Z,10Z,13Z,16Z,19Z-docosahexaenoyl)-sn-glycerol + phosphate 1-hexadecanoyl-2-(5Z,8Z,11Z,14Z-eicosatetraenoyl)-sn-glycero-3-phosphate + H2O = 1-hexadecanoyl-2-(5Z,8Z,11Z,14Z-eicosatetraenoyl)-sn-glycerol + phosphate 1-hexadecanoyl-2-(9Z,12Z-octadecadienoyl)-sn-glycero-3-phosphate + H2O = 1-hexadecanoyl-2-(9Z,12Z-octadecadienoyl)-sn-glycerol + phosphate 1-hexadecanoyl-2-(9Z-octadecenoyl)-sn-glycero-3-phosphate + H2O = 1-hexadecanoyl-2-(9Z-octadecenoyl)-sn-glycerol + phosphate 1,2-di-(4Z,7Z,10Z,13Z,16Z,19Z-docosahexaenoyl)-sn-glycero-3-phosphate + H2O = 1,2-di-(4Z,7Z,10Z,13Z,16Z,19Z-docosahexaenoyl)-sn-glycerol + phosphate 1,2-di-(5Z,8Z,11Z,14Z)-eicosatetraenoyl-sn-glycero-3-phosphate + H2O = 1,2-di-(5Z,8Z,11Z,14Z)-eicosatetraenoyl-sn-glycerol + phosphate 1,2-di-(9Z,12Z-octadecadienoyl)-sn-glycero-3-phosphate + H2O = 1,2-di-(9Z,12Z-octadecadienoyl)-sn-glycerol + phosphate 1,2-di-(9Z-octadecenoyl)-sn-glycero-3-phosphate + H2O = 1,2-di-(9Z-octadecenoyl)-sn-glycerol + phosphate 1-octadecanoyl-2-(4Z,7Z,10Z,13Z,16Z,19Z-docosahexaenoyl)-sn-glycero-3-phosphate + H2O = 1-octadecanoyl-2-(4Z,7Z,10Z,13Z,16Z,19Z-docosahexaenoyl)-sn-glycerol + phosphate 1-octadecanoyl-2-(5Z,8Z,11Z,14Z-eicosatetraenoyl)-sn-glycero-3-phosphate + H2O = 1-octadecanoyl-2-(5Z,8Z,11Z,14Z-eicosatetraenoyl)-sn-glycerol + phosphate 1-octadecanoyl-2-(9Z,12Z-octadecadienoyl)-sn-glycero-3-phosphate + H2O = 1-octadecanoyl-2-(9Z,12Z)-octadecadienoyl-sn-glycerol + phosphate 1-octadecanoyl-2-(9Z-octadecenoyl)-sn-glycero-3-phosphate + H2O = 1-octadecanoyl-2-(9Z-octadecenoyl)-sn-glycerol + phosphate 1-hexadecanoyl-2-(4Z,7Z,10Z,13Z,16Z,19Z-docosahexaenoyl)-sn-glycero-3-phosphate + H2O = 1-hexadecanoyl-2-(4Z,7Z,10Z,13Z,16Z,19Z-docosahexaenoyl)-sn-glycerol + phosphate 1-hexadecanoyl-2-(5Z,8Z,11Z,14Z-eicosatetraenoyl)-sn-glycero-3-phosphate + H2O = 1-hexadecanoyl-2-(5Z,8Z,11Z,14Z-eicosatetraenoyl)-sn-glycerol + phosphate 1-hexadecanoyl-2-(9Z,12Z-octadecadienoyl)-sn-glycero-3-phosphate + H2O = 1-hexadecanoyl-2-(9Z,12Z-octadecadienoyl)-sn-glycerol + phosphate 1-hexadecanoyl-2-(9Z-octadecenoyl)-sn-glycero-3-phosphate + H2O = 1-hexadecanoyl-2-(9Z-octadecenoyl)-sn-glycerol + phosphate 1,2-di-(4Z,7Z,10Z,13Z,16Z,19Z-docosahexaenoyl)-sn-glycero-3-phosphate + H2O = 1,2-di-(4Z,7Z,10Z,13Z,16Z,19Z-docosahexaenoyl)-sn-glycerol + phosphate 1,2-di-(5Z,8Z,11Z,14Z)-eicosatetraenoyl-sn-glycero-3-phosphate + H2O = 1,2-di-(5Z,8Z,11Z,14Z)-eicosatetraenoyl-sn-glycerol + phosphate 1,2-di-(9Z,12Z-octadecadienoyl)-sn-glycero-3-phosphate + H2O = 1,2-di-(9Z,12Z-octadecadienoyl)-sn-glycerol + phosphate 1,2-di-(9Z-octadecenoyl)-sn-glycero-3-phosphate + H2O = 1,2-di-(9Z-octadecenoyl)-sn-glycerol + phosphate Mg(2+) and, at a lesser extent, Mn(2+). Potently inhibited by sphingolipids, in particular, the sphingoid bases sphinganine and sphingosine and ceramide-1-phosphate. Inhibited by concentrations of Mg(2+) and Mn(2+) above their optimums and by Ca(2+), Zn(2+), N-ethylmaleimide and propranolol. Optimum temperature is 40 degrees Celsius. Thermolabile above 40 degrees Celsius and essentially inactive at 60 degrees Celsius. Interacts (via LXXIL motif) with PPARA (By similarity). Interacts with PPARGC1A. Interaction with PPARA and PPARGC1A leads to the formation of a complex that modulates gene transcription (By similarity). Interacts with MEF2C (By similarity). Translocates from the cytosol to the endoplasmic reticulum following acetylation by KAT5. Specifically expressed in skeletal muscle. Also abundant in adipose tissue. Lower levels in some portions of the digestive tract. Contains one Leu-Xaa-Xaa-Ile-Leu (LXXIL), a transcriptional binding motif, which mediates interaction with PPARA. Contains 1 Asp-Xaa-Asp-Xaa-Thr (DXDXT) motif, a catalytic motif essential for phosphatidate phosphatase activity. Phosphorylated at multiple sites in response to insulin. Phosphorylation is controlled by the mTOR signaling pathway. Phosphorylation is decreased by epinephrine. Phosphorylation may not directly affect the catalytic activity but may regulate the localization. Dephosphorylated by the CTDNEP1-CNEP1R1 complex (By similarity). Acetylation at Lys-425 and Lys-595 by KAT5 in response to fatty acids promotes translocation to the endoplasmic reticulum and synthesis of diacylglycerol. Sumoylated. The disease is caused by variants affecting the gene represented in this entry. May represent a candidate gene for human lipodysytropy syndromes. Belongs to the lipin family. Extended N-terminus. Truncated N-terminus. Extended N-terminus. Truncated N-terminus.