3D-structure modeling suggests it may have endo-(1,3)-beta-glucanase activity. Expressed in fruits. Variations in the sequences detected among olive varieties and within a single variety, suggesting the presence of microheterogeneity. Causes an allergic reaction in human. Is the only allergen described until now in the olive fruit. Contains epitopes responsible of cross allergenicity between food and pollen allergenic thaumatin-like proteins (PubMed:27017426). Belongs to the thaumatin family.