Serine hydrolase required for the maintenance of steady state level of non-polar and polar lipids of lipid droplets and thus plays a role in maintaining the lipids homeostasis (PubMed:21478434). Exhibits both esterase and triacylglycerol lipase activity (PubMed:21478434). a triacylglycerol + H2O = a diacylglycerol + a fatty acid + H(+) Leads to the appearance of giant lipid droplets and an excessive accumulation of non-polar lipids and phospholipids upon growth on medium containing oleic acid as a sole carbon source. Belongs to the AB hydrolase superfamily. Lipase family.