Patatin is a glycoprotein found in potatoes (Solanum tuberosum). The main function of patatin is as a storage protein but it also has lipase activity and can cleave fatty acids from membrane lipids.[1][2] The patatin protein makes up about 40% of the soluble protein in potato tubers.[3] Members of this protein family have also been found in animals.
Patatin is identified as a major cause of potato allergy [4]