This toxin inhibits both the TTX-sensitive and TTX-resistant sodium currents in adult rat dorsal root ganglion neurons. The inhibition on TTX-resistant sodium currents is stronger than on TTX-sensitive sodium currents (PubMed:25600641). When intracranially injected into mice, the toxin induces tremors (50 nM), spasms (100 nM), and death (200 nM) (PubMed:25600641). Expressed by the venom duct. The cysteine framework is XVI (C-C-CC). Authors of PubMed:25600641 studied the activity of this peptide with the C-terminal Arg residue, which is probably cleaved in the native peptide. Contains 2 disulfide bonds. Belongs to the conotoxin M superfamily.