Heteropodatoxin-2 (TFA), a peptides of 30-amino acid, is a heteropodatoxin. Heteropodatoxin-2 blocks Kv4.2 current expressed in Xenopus laevis oocytes in a voltage-dependent manner, with less block at more positive potentials.
References:
[1]. M C Sanguinetti, et al. Heteropodatoxins: peptides isolated from spider venom that block Kv4.2 potassium channels. Mol Pharmacol. 1997 Mar;51(3):491-8.
















