Probably forms pores in target membranes. Has antibacterial activity against Gram-negative bacterium E.coli NBRC 3972 (MIC=10 uM) and against Gram-positive bacteria S.aureus NBRC 13276 (MIC=2.5-5 uM) and B.subtilis NBRC 3009 (MIC=0.5-1 uM). Toxic to cricket A.domestica. Has hemolytic activity against sheep erythrocytes. Probably forms a helical membrane channel in the prey. Expressed by the venom gland. LD(50) is 61 nmol/g by intraabdominal injection into cricket A.domestica. Fragments comprising residues 10-25, 1-19, 7-25, 1-22, 4-25 and 1-23 have been detected in venom but it is unclear whether they have a physiological role or are simply due to degradation. Belongs to the non-disulfide-bridged peptide (NDBP) superfamily. Medium-length antimicrobial peptide (group 3) family.