Antimicrobial peptide active against Gram-negative bacteria E.coli KCCM 11234 (MIC<=1.03 uM), E.aerogenes KCCM 12177 (MIC<=2.07 uM) and P.aeruginosa KCCM 11328 (MIC<=2.07 uM). Not active against various Gram-positive bacteria at concentrations up to 4.14 uM. Following bacterial infection, expressed in fat body, trachea and muscle. By bacterial infection. Belongs to the cecropin family.