Probable neurotoxin. Expressed by the venom duct. The cysteine framework is C-C-CCC-C-C-C. May contain 4 disulfide bonds. Authors numbered this protein framework XXVII. Unfortunately, this number is already attributed to another Cys arrangment (C-CC-C-C-C). As a consequence, it has been renamed conotoxin GeXXVIIIA.