Shows weak hemolytic activity and antibacterial activity against both Gram-positive and Gram-negative bacteria probably by forming pores in the cell membrane. IsCT adopts an amphipathic alpha-helical structure. Shows neither hemolytic, nor antibacterial activities, probably because it cannot adopt amphipathic alpha-helical structure. Forms a helical membrane channel in the prey. Expressed by the venom gland. IsCTf is an enzymatic proteolytic cleavage product of IsCT by the proteases present in the venom. Belongs to the non-disulfide-bridged peptide (NDBP) superfamily. Short antimicrobial peptide (group 4) family.