Antibacterial peptide active against Gram-positive bacteria (including S.aureus ATCC25923 (MIC=2.5 uM), M.luteus AB93113 (MIC=2.5 uM), and the antibiotic-resistant S.epidermidis PRSE P1389 (MIC=1.25 uM)), but not against Gram-negative bacteria (including E.coli and P.aeruginosa). Has also weak blocking activity on Kv1.1/KCNA1 (8.7% inhibition), Kv1.2/KCNA2 (10.2% inhibition), Kv1.3/KCNA3 (9.0% inhibition), KCa3.1/KCNN4/IK (9.1% inhibition), KCa2.3/KCNN3/SK3 (46.3% inhibition) and Kv11.1/KCNH2/ERG1 (16.9% inhibition) channels (tested at 1 uM) (PubMed:31954123). It inhibits potassium channel current by interacting with the pore region (By similarity). Highly expressed in non-venom gland (hemolymph) and moderately expressed in venom gland. Belongs to the invertebrate defensin family. Type 2 subfamily.