Ssm6a centipede toxin
Ssm6a centipede toxin information
μ-SLPTX-Ssm6a, a peptide isolated from the venom of the centipede S. subspinipes mutilans, was recently described to potently inhibit hNav1.7 with an IC50 of 25 nM . Other results  and Smartox’s tests did not confirm the Nav1.7 inhibitory effect of this peptide for now.
Smartox Biotechnology offers other validated Nav1.7 blockers:
 Yang S., et al. (2013) Discovery of a selective Nav1.7 inhibitor from centipede venom with analgesic efficacy exceeding morphine in rodent pain models. PNAS
 Murray JK., et al. (2015) Engineering Potent and Selective Analogs of GpTx-1, a Tarantula Venom Peptide Antagonist of the NaV1.7 Sodium Channel. J Med Chem.