Expressed by the venom gland. The cysteine framework is XVII (C-C-CC-C-CC-C). Contains disulfide bonds. Belongs to the conotoxin Y superfamily. The authors initially published the new framework as framework XVI which was already attributed to another cysteine pattern (AC Q2I2P8). In order to be consistent with the current nomenclature rules and with the new reassignment proposed by ConoServer, we now designate this cysteine pattern as XVII. We also follow ConoServer for assigning this toxin to the conotoxin Y superfamily.