Binds chitin. Has antifungal activity against the fungi F.solani (IC(50)=5 ug/ml), F.verticillioides (IC(50)=30 ug/ml), F.oxysporum (IC(50)=5 ug/ml), B.sorokiniana (IC(50)=5 ug/ml), B.cinerea (IC(50)=20 ug/ml) and N.crassa (IC(50)=10 ug/ml). Inhibits hyphal elongation and causes browning of hyphae in F.oxysporum. Causes destruction and discoloration of spores in B.sorokiniana. Inhibits the development of disease caused by the fungus P.infestans on potato tubers. Has antibacterial activity against the Gram-negative bacteria P.syringae and E.carotovora, and the Gram-positive bacterium C.michiganensis. Has antifungal activity against F.verticillioides (IC(50)=2.7 ug/ml). At concentrations between 45 uM and 225 uM, inhibits activity of metalloproteinase fungalysin Fv-cpm from F.verticillioides. Antimicrobial peptide 1b. Antimicrobial peptide 1a. Antimicrobial peptide 1b. Antimicrobial peptide 1a.