Alpha-conotoxins act on postsynaptic membranes, they bind to the nicotinic acetylcholine receptors (nAChR) and thus inhibit them. This toxin blocks mammalian nAChRs (alpha-7 > alpha-3/beta-2). Expressed by the venom duct. The cysteine framework is I (CC-C-C). Alpha4/7 pattern. Belongs to the conotoxin A superfamily.