Binds to muscle nicotinic acetylcholine receptor (nAChR) and inhibit acetylcholine from binding to the receptor, thereby impairing neuromuscular transmission. Produces peripheral paralysis by blocking neuromuscular transmission at the postsynaptic site. Has a lower toxicity than cobrotoxin. Expressed by the venom gland. LD(50) is 0.18 mg/kg by intravenous injection into mice. Belongs to the snake three-finger toxin family. Short-chain subfamily. Type I alpha-neurotoxin sub-subfamily.