Lipase that preferentially hydrolysis medium-chain saturated monoacylglycerols including 2-arachidonoylglycerol (PubMed:18096503, PubMed:20657592). Through 2-arachidonoylglycerol degradation may regulate endocannabinoid signaling pathways (PubMed:18096503, PubMed:20657592). Also has a lysophosphatidyl lipase activity with a preference for lysophosphatidylglycerol among other lysophospholipids (PubMed:24095738). Also able to degrade bis(monoacylglycero)phosphate (BMP) and constitutes the major enzyme for BMP catabolism (PubMed:26491015). BMP, also known as lysobisphosphatidic acid, is enriched in late endosomes and lysosomes and plays a key role in the formation of intraluminal vesicles and in lipid sorting (PubMed:26491015). Hydrolyzes glycerol monoesters of long-chain fatty acids. 2-(5Z,8Z,11Z,14Z-eicosatetraenoyl)-glycerol + H2O = (5Z,8Z,11Z,14Z)-eicosatetraenoate + glycerol + H(+) 1-octanoylglycerol + H2O = glycerol + H(+) + octanoate 1-decanoylglycerol + H2O = decanoate + glycerol + H(+) 1-dodecanoylglycerol + H2O = dodecanoate + glycerol + H(+) 1-tetradecanoylglycerol + H2O = glycerol + H(+) + tetradecanoate 2-hexadecanoylglycerol + H2O = glycerol + H(+) + hexadecanoate 2-(9Z-octadecenoyl)-glycerol + H2O = (9Z)-octadecenoate + glycerol + H(+) 1-(9Z-octadecenoyl)-glycerol + H2O = (9Z)-octadecenoate + glycerol + H(+) 2-(9Z,12Z-octadecadienoyl)-glycerol + H2O = (9Z,12Z)-octadecadienoate + glycerol + H(+) 1-(5Z,8Z,11Z,14Z-eicosatetraenoyl)-glycerol + H2O = (5Z,8Z,11Z,14Z)-eicosatetraenoate + glycerol + H(+) 1-(9Z,12Z-octadecadienoyl)-glycerol + H2O = (9Z,12Z)-octadecadienoate + glycerol + H(+) (S,S)-3-(9Z-octadecenoyl)-sn-glycero-1-phospho-(3'-(9Z-octadecenoyl)-1'-sn-glycerol) + H2O = (9Z)-octadecenoate + (S,S)-3-(9Z-octadecenoyl)-sn-glycero-1-phospho-(1'-sn-glycerol) + H(+) (S,S)-2-(9Z-octadecenoyl)-sn-glycero-1-phospho-(2'-(9Z-octadecenoyl)-1'-sn-glycerol) + H2O = (9Z)-octadecenoate + (S,S)-2-(9Z-octadecenoyl)-sn-glycero-1-phospho-(1'-sn-glycerol) + H(+) (R,R)-2-(9Z-octadecenoyl)-sn-glycero-3-phospho-(2'-(9Z-octadecenoyl)-3'-sn-glycerol) + H2O = (9Z)-octadecenoate + (R,R)-2-(9Z-octadecenoyl)-sn-glycero-3-phospho-(3'-sn-glycerol) + H(+) Optimum pH is 7.5-8.0. Widely expressed with higher expression in small intestine, liver and brown adipose tissue (PubMed:24095738). In brain, expressed postsynaptically in cortical neurons but not detected in microglia (at protein level) (PubMed:20657592). Up-regulated in small intestine and liver by high-fat diet. Abhd6 partial knockdown inducing a stronger depletion in liver, kidney and white adipose tissues protects mice against hight-fat diet-induced metabolic disorder and obesity. De novo lipogenesis in liver is reduced and associated with a reduced expression of lipogenic genes. Accumulation of phospholipids and lysophospholipds in the liver is also observed. Belongs to the AB hydrolase superfamily. Extended N-terminus.