Expressed by the venom duct. The cysteine framework is III (CC-C-C-CC). Classified in the M-3 branch, since 3 residues stand between the fourth and the fifth cysteine residues. Contains 3 disulfide bonds (By similarity). They are not indicated here, since framework III presents two different connectivities (I-IV, II-V, III-VI and I-V, II-VI, III-IV). Belongs to the conotoxin M superfamily.