Antibacterial peptide with strong anti-Gram-negative bacteria activity. Hemolymph (at protein level). Expressed in larvae and in adults. By bacterial infection (at protein level) (PubMed:9736738). In hemolymph 6 hours after immune challenge, levels of expression increase for first 24 hours and persist for the following two weeks (at protein level) (PubMed:9736738). O-glycosylated (PubMed:8325867, PubMed:9888811, PubMed:9736738). O-glycosylation is essential for full biological activity (PubMed:8325867). With monosaccharide on Thr-32. With disaccharide on Ser-28 and Thr-32. Belongs to the drosocin family. Extended N-terminus.