Inhibits Kv11.1/KCNH2/ERG1, Kv1.1/KCNA1, Kv1.2/KCNA2 voltage-gated potassium channels and Nav1.7/SCN9A voltage-gated sodium channels (PubMed:29483648). In vivo, no toxicity is observed upon intracranial injection into mice and intrathorax injection into crickets. Expressed by the venom gland. The presence of a 'disulfide through disulfide knot' structurally defines this protein as a knottin. Contains 3 disulfide bonds.