1) Ion channel toxin 
Hanatoxin is a toxin found in the venom of the Grammostola spatulata tarantula {harv|Swartz|MacKinnon|1995}. The toxin is primarily known for inhibiting the activation of voltage-gated potassium channels, most specifically Kv4.2 and Kv2.1, by raising its activation threshold {harv|Swartz|MacKinnon|1997}. == Sources == Hanatoxin is a spider toxin f...