Cationic peptide that possesses multiple functions. It acts as a cell-penetrating peptide (CPP), and as a potent voltage-gated potassium channel (Kv) inhibitor, it induces severe muscle necrosis by a non-enzymatic mechanism and exhibits antimicrobial activities (By similarity). It also elicits a short-lasting hyperextension of the hind limb (Ref.1). It does not cause observable tissue damage (whereas the whole venom causes severe myonecrosis accompanied by edema and hemorrhage) (Ref.1). Monomer. Expressed by the venom gland. Belongs to the crotamine-myotoxin family.