Lethal toxin which possesses an inhibitory effect on direct electrical stimulation of the isolated hemi-diaphragm of mice. Neither hemorrhagic nor hemolytic activities are detected. Phospholipase A2 activity, proteolytic activity and arginine esterolytic activity are absent (By similarity). Expressed by the mandibular venom gland. Belongs to the beta-defensin family. Helofensin subfamily.