Antimicrobial peptide active against fungi, Gram-positive and Gram-negative bacteria. Inhibits growth of hyphae in the fungi A.niger (IC(50)=3.5 ug/ml), B.sorokiniana (IC(50)=3.0 ug/ml), F.oxysporum (IC(50)=9.5 ug/ml), F.graminearum (IC(50)=6.9 ug/ml), F.culmorum (IC(50)=6.9 ug/ml) and B.cinerea (IC(50)=27.4 ug/ml). Has no effect on spore germination. Destroys spores in germinated conidia by disruption of cell walls and membranes in A.niger and B.sorokiniana. Causes vacuolization of germinated macro- and microconidia in F.oxysporum, F.graminearum and F.culmorum. Strongly inhibits growth of P.infestans on potato tubers above concentrations of 13.6 ug/ml. Inhibits growth of Gram-positive bacteria C.michiganensis and B.subtilis and of Gram-negative bacteria P.syringae, E.carotovora and E.coli. Contains 4 disulfide bonds. Belongs to the DEFL family.