All S LCN type CS-α/β A-B contain Cys, indicating that they may form disulfide bonds. S LCN type CS-α/β B is close to 60 nt in length. LCN type CS-α/β A with a length of less than 30 nt may aid S LCN type CS-α/β B. As a result, S LCN type CS-α/β is a long-chain neurotoxic capable of activating Na+ channels.