Alpha-conotoxins act on postsynaptic membranes, they bind to the nicotinic acetylcholine receptors (nAChR) and thus inhibit them (By similarity). Has possibly a distinct nAChR binding mode from other alpha-conotoxins, due to a different three residue motif (lacks the Ser-Xaa-Pro motif) (By similarity). Expressed by the venom duct. The cysteine framework is I (CC-C-C). Alpha4/7 pattern. Belongs to the conotoxin A superfamily. There is a discrepancy in nomenclature: was submitted as Lp1.8 but is named Lp1.7 in PubMed:17400270.