Dual-function peptide with antimicrobial and potassium channel-blocking activities. Shows inhibitory activity against Gram-positive bacteria. Does not act on bacteria by disrupting membranes. Also moderately inhibits Kv1.1/KCNA1, Kv1.2/KCNA2, and Kv1.3/KCNA3 potassium channels. Inhibits potassium channels by interacting with the pore region. Does not show hemolytic activity. Has the structural arrangement of an alpha-helix connected to a beta-sheet by disulfide bonds (CSalpha/beta). Belongs to the invertebrate defensin family. Type 2 subfamily.