Induces neurotoxic effect on honeybees, including slow movements, disorientation and paralysis. Since it provokes similar symptoms than omega-atracotoxin, it is probable that it acts in the same way by inhibiting voltage-gated calcium channels. Expressed by the venom gland. The most highly expressed peptides U-Asilidin1-Mar1a is around 3000 times higher expressed in the venom thoracic glands compared to its body tissues. The presence of a 'disulfide through disulfide knot' structurally defines this protein as a knottin. Belongs to the asilidin-1 family.