Jingzhaotoxin-V

Jingzhaotoxin-V, a 29-residue polypeptide from Chilobrachys jingzhao spider venom, selectively inhibits tetrodotoxin-resistant and tetrodotoxin-sensitive sodium currents in rat dorsal root ganglion neurons, with IC50 values of 27.6 nM and 30.2 nM, respectively. Furthermore, it suppresses Kv4.2 potassium currents in Xenopus laevis oocytes, with an IC50 of 604.2 nM [1].