Active against both Gram-positive and Gram-negative bacteria but is not cytotoxic towards human erythrocytes or protozoa (PubMed:8925841). Abundantly expressed in hemocytes. Its expression is increased by bacterial challenge. The hydroxylation of the Trp-28 is not important for the antibacterial activity. The Cys-4-Pro-5 bond is in cis conformation. Belongs to the invertebrate defensin family. Type 2 subfamily.