Acylhydrolase with broad specificity (PubMed:19527719). Catalyzes the hydrolysis of phosphatidylcholine at the sn-1 position (PubMed:19527719). Possesses moderate activity toward phosphatidylcholine (PC), monogalactosyldiacylglycerol (MGDG), digalactosyldiacylglycerol (DGDG) and triacylglycerol (TAG) (PubMed:19527719). 1,2-dihexadecanoyl-sn-glycero-3-phosphocholine + H2O = 2-hexadecanoyl-sn-glycero-3-phosphocholine + H(+) + hexadecanoate a 1,2-diacyl-3-O-(beta-D-galactosyl)-sn-glycerol + H2O = a fatty acid + an acyl-3-O-(beta-D-galactosyl)-sn-glycerol + 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(+) a triacylglycerol + H2O = a diacylglycerol + a fatty acid + H(+) Interacts with SBP1. Widely expressed (PubMed:19527719). Highly expressed in leaves and stems (PubMed:19527719). Slightly induced by wounding (PubMed:18267087). Induced by wounding (PubMed:24430866, PubMed:31928671). Induced by cadmium and selenium in roots (PubMed:31928671). No visible phenotype under normal growth conditions. Major isoform. Belongs to the AB hydrolase superfamily. Lipase family.