Has antibacterial activity against the Gram-positive bacteria S.aureus ATCC 6535 and S.saprophyticus, and the Gram-negative bacteria E.coli CCT1371, E.cloacae ATCC 23355, K.pneumoniae ATCC 13883 and P.aeruginosa ATCC 27853, and antifungal activity against C.albicans. Lacks cytolytic activity and do not induce rat peritoneal mast cell degranulation. Found in the hypopharyngeal glands of the worker honeybee.