Lipase that primarily hydrolyzes triglycerides and galactosylglycerides (PubMed:8656075, PubMed:9822688). In neonates, may play a major role in pancreatic digestion of dietary fats such as milk fat globules enriched in long-chain triglycerides (By similarity). Hydrolyzes short-, medium- and long-chain fatty acyls in triglycerides without apparent positional specificity (PubMed:8656075). Can completely deacylate triacylglycerols (By similarity). When the liver matures and bile salt synthesis increases, likely functions mainly as a galactolipase and monoacylglycerol lipase (By similarity). Hydrolyzes monogalactosyldiglycerols (MGDG) and digalactosyldiacylglycerols (DGDG) present in a plant-based diet, releasing long-chain polyunsaturated fatty acids (By similarity). Hydrolyzes medium- and long-chain fatty acyls in galactolipids (PubMed:9822688). May act together with LIPF to hydrolyze partially digested triglycerides (By similarity). Hydrolyzes long-chain monoglycerides with high efficiency. In cytotoxic T cells, contributes to perforin-dependent cell lysis, but is unlikely to mediate direct cytotoxicity (By similarity). Also has low phospholipase activity (PubMed:8656075, PubMed:9822688). In neurons, required for the localization of the phospholipid 1-oleoyl-2-palmitoyl-PC (OPPC) to neurite tips through acyl chain remodeling of membrane phospholipids (PubMed:32963038). The resulting OPPC-rich lipid membrane domain recruits the t-SNARE protein STX4 by selectively interacting with the STX4 transmembrane domain and this promotes surface expression of the dopamine transporter SLC6A3/DAT at neurite tips by facilitating fusion of SLC6A3-containing transport vesicles with the plasma membrane (PubMed:32963038). a triacylglycerol + H2O = a diacylglycerol + a fatty acid + H(+) a 1,2-diacyl-3-O-(beta-D-galactosyl)-sn-glycerol + 2 H2O = 3-beta-D-galactosyl-sn-glycerol + 2 a fatty acid + 2 H(+) 1,2,3-tri-(9Z-octadecenoyl)-glycerol + H2O = (9Z)-octadecenoate + di-(9Z)-octadecenoylglycerol + H(+) di-(9Z)-octadecenoylglycerol + H2O = (9Z)-octadecenoate + (9Z-octadecenoyl)-glycerol + H(+) (9Z-octadecenoyl)-glycerol + H2O = (9Z)-octadecenoate + glycerol + H(+) 1-(9Z-octadecenoyl)-glycerol + H2O = (9Z)-octadecenoate + glycerol + H(+) 1,2,3-tripropanoylglycerol + H2O = dipropanoylglycerol + H(+) + propanoate 1,2,3-tributanoylglycerol + H2O = butanoate + dibutanoylglycerol + H(+) 1,2,3-trioctanoylglycerol + H2O = dioctanoylglycerol + H(+) + octanoate 1,2-didecanoylglycerol + H2O = decanoate + decanoylglycerol + H(+) H2O + long chain 1,2-diacyl-3-O-beta-D-galactosyl-sn-glycerol = a fatty acid + H(+) + long chain acyl-3-O-beta-D-galactosyl-sn-glycerol 1,2-dioctanoyl-3-O-beta-D-galactosyl-sn-glycerol + H2O = H(+) + octanoate + octanoyl-3-(beta-D-galactosyl)-sn-glycerol 1,2-didodecanoyl-3-beta-D-galactosyl-sn-glycerol + H2O = dodecanoate + dodecanoyl-3-beta-D-galactosyl-sn-glycerol + H(+) 1-beta-D-galactosyl-2,3-didodecanoyl-sn-glycerol + H2O = 1-beta-D-galactosyl-dodecanoyl-sn-glycerol + dodecanoate + H(+) 1,2-diacyl-3-O-[alpha-D-galactosyl-(1->6)-beta-D-galactosyl]-sn-glycerol + H2O = a fatty acid + acyl-3-O-[alpha-D-galactosyl-(1->6)-beta-D-galactosyl]-sn-glycerol + H(+) H2O + long chain 1,2-diacyl-3-O-[alpha-D-galactosyl-(1->6)-beta-D-galactosyl]-sn-glycerol = a fatty acid + H(+) + long chain acyl-3-O-[alpha-D-galactosyl-(1->6)-beta-D-galactosyl]-sn-glycerol 1,2-dioctanoyl-3-O-[alpha-D-galactosyl-(1->6)-beta-D-galactosyl]-sn-glycerol + H2O = H(+) + octanoate + octanoyl-3-O-[alpha-D-galactosyl-(1->6)-beta-D-galactosyl]-sn-glycerol 1,2-didodecanoyl-3-O-[alpha-D-galactosyl-(1->6)-beta-D-galactosyl]-sn-glycerol + H2O = dodecanoate + dodecanoyl-3-O-[alpha-D-galactosyl-(1->6)-beta-D-galactosyl]-sn-glycerol + H(+) a 1,2-diacyl-sn-glycero-3-phosphocholine + H2O = a fatty acid + a monoacyl-sn-glycero-3-phosphocholine + H(+) CLPS stimulates triacylglycerol lipase activity. Triacylglycerol lipase activity is not inhibited by increasing bile salt concentration. Optimum pH is 7-8 (lipase activity in the presence of bile salts) and 7.0-7.25 (lipase activity in the absence of bile salts). Glycerolipid metabolism; triacylglycerol degradation. Glycolipid metabolism. Localizes to neurite tips in neuronal cells. Expressed in pancreatic acinar cells (at protein level). By NGF (at protein level). Belongs to the AB hydrolase superfamily. Lipase family.