This family consists of both phospholipases [1] and carboxylesterases with broad substrate specificity, and is structurally related to alpha/beta hydrolases Pfam:PF00561 [2].

1: cDNA cloning and expression of a novel family of enzymes with calcium-independent phospholipase A2 and lysophospholipase activities. Portilla D, Crew MD, Grant D, Serrero G, Bates LM, Dai G, Sasner M, Cheng J, Buonanno A; J Am Soc Nephrol 1998;9:1178-1186. PMID:9644627

2: Crystal structure of carboxylesterase from Pseudomonas fluorescens, an alpha/beta hydrolase with broad substrate specificity. Kim KK, Song HK, Shin DH, Hwang KY, Choe S, Yoo OJ, Suh SW; Structure 1997;5:1571-1584. PMID:9438866