Alpha-conotoxins act on postsynaptic membranes, they bind to the nicotinic acetylcholine receptors (nAChR) and thus inhibit them. This toxin inhibits mouse muscle alpha-1-beta-1-gamma-delta (CHRNA1-CHRNB1-CHRNG-CHRND), and weakly rat neuronal alpha-6/alpha-3-beta-2 (CHRNA6/CHRNA3-CHRNB2). Expressed by the venom duct. The cysteine framework is I (CC-C-C). Alpha4/7 pattern. Does not or very weakly inhibits rat neuronal alpha-7 (CHRNA7), alpha-3-beta-2 (CHRNA3-CHRNB2), alpha-6/alpha-3-beta-4 (CHRNA6/CHRNA3-CHRNB4), alpha-3-beta-4 (CHRNA3-CHRNB4), alpha-4-beta-4 (CHRNA4-CHRNB4) and alpha-4-beta-2 (CHRNA4-CHRNB2) nAChR. Belongs to the conotoxin A superfamily.