Patatin-like phospholipase. This family consists of various patatin glycoproteins from plants and fungi. The patatin protein accounts for up to 40% of the total soluble protein in potato tubers. Patatin is a storage protein, but it also has the enzymatic activity of a lipid acyl hydrolase, catalyzing the cleavage of fatty acids from membrane lipids. Members of this family have been found also in vertebrates.