Cecropins have lytic and antibacterial activity against several Gram-positive and Gram-negative bacteria. Has antibacterial activity against the Gram-positive bacteria M.luteus (MIC=34.4 uM), L.monocytogenes (MIC=34.4 uM), and S.lutea (MIC=34.4 uM), and the Gram-negative bacterium E.coli D31 (MIC=8.6 uM). Lacks antibacterial activity against the Gram-positive bacterium B.circulans, and the Gram-negative bacteria E.coli ATCC 25922 and S.typhimurium. Has antifungal activity against A.niger, but lacks antifungal activity against C.albicans, C.wickerhamii, F.oxysporum, P.pastoris, P.tannophilus, S.cerevisiae, T.harzianum, and Z.marxianus. Hemolymph. By bacterial infection. Belongs to the cecropin family.