Exhibits both phospholipase A1/2 and acyltransferase activities (PubMed:19047760). Shows phospholipase A1 (PLA1) and A2 (PLA2), catalyzing the calcium-independent release of fatty acids from the sn-1 or sn-2 position of glycerophospholipids (PubMed:18614531, PubMed:19047760, PubMed:19136964, PubMed:22134920). For most substrates, PLA1 activity is much higher than PLA2 activity (By similarity). Shows O-acyltransferase activity, catalyzing the transfer of a fatty acyl group from glycerophospholipid to the hydroxyl group of lysophospholipid (By similarity). Shows N-acyltransferase activity,catalyzing the calcium-independent transfer of a fatty acyl group at the sn-1 position of phosphatidylcholine (PC) and other glycerophospholipids to the primary amine of phosphatidylethanolamine (PE), forming N-acylphosphatidylethanolamine (NAPE), which serves as precursor for N-acylethanolamines (NAEs) (PubMed:19047760). Exhibits high N-acyltransferase activity and low phospholipase A1/2 activity (By similarity). Required for complete organelle rupture and degradation that occur during eye lens terminal differentiation, when fiber cells that compose the lens degrade all membrane-bound organelles in order to provide lens with transparency to allow the passage of light (PubMed:33854238). Organelle membrane degradation is probably catalyzed by the phospholipase activity (PubMed:33854238). (Microbial infection) Acts as a host factor for picornaviruses: required during early infection to promote viral genome release into the cytoplasm (PubMed:28077878). a 1,2-diacyl-sn-glycero-3-phosphocholine + H2O = a 1-acyl-sn-glycero-3-phosphocholine + a fatty acid + H(+) a 1,2-diacyl-sn-glycero-3-phosphocholine + H2O = a 2-acyl-sn-glycero-3-phosphocholine + a fatty acid + H(+) 1,2-dihexadecanoyl-sn-glycero-3-phosphocholine + H2O = 1-hexadecanoyl-sn-glycero-3-phosphocholine + H(+) + hexadecanoate 1,2-dihexadecanoyl-sn-glycero-3-phosphocholine + H2O = 2-hexadecanoyl-sn-glycero-3-phosphocholine + H(+) + hexadecanoate 1-hexadecanoyl-2-(9Z-octadecenoyl)-sn-glycero-3-phosphocholine + H2O = 2-(9Z-octadecenoyl)-sn-glycero-3-phosphocholine + H(+) + hexadecanoate 1-hexadecanoyl-2-(9Z-octadecenoyl)-sn-glycero-3-phosphocholine + H2O = (9Z)-octadecenoate + 1-hexadecanoyl-sn-glycero-3-phosphocholine + H(+) 1-hexadecanoyl-2-(5Z,8Z,11Z,14Z-eicosatetraenoyl)-sn-glycero-3-phosphocholine + H2O = (5Z,8Z,11Z,14Z)-eicosatetraenoate + 1-hexadecanoyl-sn-glycero-3-phosphocholine + H(+) 1-hexadecanoyl-2-(5Z,8Z,11Z,14Z-eicosatetraenoyl)-sn-glycero-3-phosphocholine + H2O = 2-(5Z,8Z,11Z,14Z)-eicosatetraenoyl-sn-glycero-3-phosphocholine + H(+) + hexadecanoate 1-hexadecanoyl-2-(9Z,12Z-octadecadienoyl)-sn-glycero-3-phosphoethanolamine + H2O = (9Z,12Z)-octadecadienoate + 1-hexadecanoyl-sn-glycero-3-phosphoethanolamine + H(+) 1-hexadecanoyl-2-(9Z,12Z-octadecadienoyl)-sn-glycero-3-phosphoethanolamine + H2O = 2-(9Z,12Z)-octadecadienoyl-sn-glycero-3-phosphoethanolamine + H(+) + hexadecanoate 1-hexadecanoyl-2-(5Z,8Z,11Z,14Z-eicosatetraenoyl)-sn-glycero-3-phosphoethanolamine + H2O = (5Z,8Z,11Z,14Z)-eicosatetraenoate + 1-hexadecanoyl-sn-glycero-3-phosphoethanolamine + H(+) 1-hexadecanoyl-2-(5Z,8Z,11Z,14Z-eicosatetraenoyl)-sn-glycero-3-phosphoethanolamine + H2O = 2-(5Z,8Z,11Z,14Z)-eicosatetraenoyl-sn-glycero-3-phosphoethanolamine + H(+) + hexadecanoate 1-hexanoyl-2-acyl-sn-glycero-3-phosphocholine + H2O = a 2-acyl-sn-glycero-3-phosphocholine + H(+) + hexanoate 1-hexanoyl-2-acyl-sn-glycero-3-phosphocholine + H2O = 1-hexanoyl-sn-glycero-3-phosphocholine + a fatty acid + H(+) 1,2-diheptadecanoyl-sn-glycero-3-phosphoethanolamine + 1-(9Z-octadecenoyl)-2-hexadecanoyl-sn-glycero-3-phosphocholine = 1,2-diheptadecanoyl-sn-glycero-3-phospho-N-hexadecanoyl-ethanolamine + 1-(9Z-octadecenoyl)-sn-glycero-3-phosphocholine + H(+) 1,2-diheptadecanoyl-sn-glycero-3-phosphoethanolamine + 1-(9Z-octadecenoyl)-2-hexadecanoyl-sn-glycero-3-phosphocholine = 1,2-diheptadecanoyl-sn-glycero-3-phospho-N-(9Z-octadecenoyl)-ethanolamine + 2-hexadecanoyl-sn-glycero-3-phosphocholine + H(+) 1,2-dihexanoyl-sn-glycero-3-phosphoethanolamine + 2-heptanoyl-sn-glycero-3-phosphocholine = 1-hexanoyl-2-heptanoyl-sn-glycero-3-phosphocholine + hexanoyl-sn-glycero-3-phosphoethanolamine 1-hexadecanoyl-2-octadecanoyl-sn-glycero-3-phosphocholine + H2O = 1-hexadecanoyl-sn-glycero-3-phosphocholine + H(+) + octadecanoate 1-hexadecanoyl-2-octadecanoyl-sn-glycero-3-phosphocholine + H2O = 2-octadecanoyl-sn-glycero-3-phosphocholine + H(+) + hexadecanoate 1-octadecanoyl-2-hexadecanoyl-sn-glycero-3-phosphocholine + H2O = 1-octadecanoyl-sn-glycero-3-phosphocholine + H(+) + hexadecanoate 1-octadecanoyl-2-hexadecanoyl-sn-glycero-3-phosphocholine + H2O = 2-hexadecanoyl-sn-glycero-3-phosphocholine + H(+) + octadecanoate 1-hexadecanoyl-2-(9Z,12Z-octadecadienoyl)-sn-glycero-3-phosphocholine + H2O = (9Z,12Z)-octadecadienoate + 1-hexadecanoyl-sn-glycero-3-phosphocholine + H(+) 1-hexadecanoyl-2-(9Z,12Z-octadecadienoyl)-sn-glycero-3-phosphocholine + H2O = 2-(9Z,12Z-octadecadienoyl)-sn-glycero-3-phosphocholine + H(+) + hexadecanoate 1,2-di-(9Z-octadecenoyl)-sn-glycero-3-phosphocholine + H2O = (9Z)-octadecenoate + 2-(9Z-octadecenoyl)-sn-glycero-3-phosphocholine + H(+) 1,2-dihexadecanoyl-sn-glycero-3-phosphocholine + H2O = H(+) + hexadecanoate + hexadecanoyl-sn-glycero-3-phosphocholine 1,2-di-(9Z-octadecenoyl)-sn-glycero-3-phosphocholine + H2O = (9Z)-octadecenoate + 1-(9Z-octadecenoyl)-sn-glycero-3-phosphocholine + H(+) 1,2-di-(9Z-octadecenoyl)-sn-glycero-3-phosphoethanolamine + 1,2-dihexadecanoyl-sn-glycero-3-phosphocholine = H(+) + hexadecanoyl-sn-glycero-3-phosphocholine + N-hexadecanoyl-1,2-di-(9Z-octadecenoyl)-sn-glycero-3-phosphoethanolamine 1,2-di-(9Z,12Z-octadecadienoyl)-sn-glycero-3-phosphocholine + H2O = (9Z,12Z)-octadecadienoate + 1-(9Z,12Z)-octadecadienoyl-sn-glycero-3-phosphocholine + H(+) Optimum pH is 8.0. Interacts with PPP2R1A; this interaction might decrease PP2A activity. During eye lens differentiation, recruited from the cytosol to various organelles, including mitochondria, endoplasmic reticulum, nuclear envelope and lysosomes, immediately before organelle degradation. This translocation is triggered by organelle membrane damage and requires the C-terminal transmembrane domain. Ubiquitously expressed in normal tissues but down-regulated in primary carcinomas or in many cell lines derived from tumors (PubMed:12055182). Highly expressed in white adipose tissue and in adipocytes (PubMed:18614531, PubMed:19136964). Expressed at lower levels in brown adipose tissue (PubMed:18614531, PubMed:19136964). The C-terminal transmembrane domain is required for the targeting of the protein to damaged organelles. Mice display resistance to diet-induced obesity: they show strongly reduced adipose tissue mass and triglyceride content but normal adipogenesis accompanied by higher energy expenditure and increased fatty acid oxidation in adipocytes (PubMed:19136964). Mice show resistance to infection by picornaviruses, such as coxsackievirus A10, probably due to reduced viral genome release into the host cytoplasm (PubMed:28077878). The eye lens of knockout animals shows no growth defect, but the degradation of mitochondria, the endoplasmic reticulum and lysosomes is almost completely suppressed at postnatal day 0.5 and at 2 months and membranous organelles persisted at this time point (PubMed:33854238). Belongs to the H-rev107 family. The makings of transparency - Issue 241 of November 2021