Insecticidal neurotoxin. Shows competition for site 3 of insect voltage-gated sodium channels (Nav). Expressed by the venom gland. The presence of a 'disulfide through disulfide knot' structurally defines this protein as a knottin. Has no effect on lepidopteran larvae when injected at 20 pmol/g, or on mice when injected intracranially at 32.8 nmol/g. Belongs to the neurotoxin 14 (magi-1) family. 09 (magi-1) subfamily.