Has bacteriolytic activity against Gram-positive bacteria B.subtilis, L.lactis and M.luteus and several species from genus Staphylococcus including methicillin-resistant S.aureus, with MIC values ranging from 0.11 uM to 7.8 uM. Has no activity against Gram-negative bacteria or fungi. In vitro, has a dose-dependent cytolytic effect on eukaryotic cells. Thermostable. Retains virtually all of its activity after incubation at 100 degress Celsius for 3 hours. Mainly expressed during the logarithmic phase. Highly resistant to proteases.