This family consists of various glycoproteins from plants. Patatin accounts for up to 40% of total soluble protein in potato tubers. Patatin is a storage protein but it also has the enzymatic activity of lipid acyl hydrolase, catalyzing the cleavage of fatty acids from membrane lipids . Members of this family have also been found in vertebrates.
Patatin is a major potato allergen. Its homology and cross-reactivity to the major Hevea brasiliensis latex allergen Hev b 7 explains the observation of potatoes being one of the plat food involved in the latex-fruit syndrome .
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