Antibacterial activity against Gram-negative bacteria E.coli D22 and D31, E.carotovora, K.pneumoniae, P.aeruginosa, S.typhimurium, E.cloacae B12 and X.campestris and Gram-positive bacteria A.viridans, M.luteus, B.megaterium and S.pyogenes. Possesses antifungal activity against F.oxysporum, F.culmorum and N.crassa, C.albicans, C.neoformans and S.cerevisiae. No activity against Gram-negative S.marcescens Db11, Gram-positive B.cereus, B.subtilis, B.thuringiensis, S.aureus and L.monocytogenes, the fungi A.fumigatus and B.bassiana and C.glabrata. Expressed in adults within 6 hours after induction and continued to accumulate over 7-10 days. By bacterial infection. Belongs to the cecropin family.