Nattokinase (Bac s 1), a subtilisin family serine protease, is a novel allergen contained in the traditional Japanese fermented food natto
Background: Immediate allergy caused by natto, a popular Japanese food prepared by fermenting soybeans with Bacillus subtilis var.natto, has been reported.Polygamma glutamic acid (PGA) in the sticky substance around natto beans has been reported to be a the gel bottle cashmere causative allergen of natto allergy.However, some of our patients with n