Kappa-<unk>  1 and 2 are toxins from the venom of the Asian forest black scorpion Heterometrus fulvipes with a unique structure. It blocks the potassium channels Kv1.2 and Kv1.3 and slows the activation of Kv1.3.
Hefutoxin
Aflatoxin
Bukatoxin
Psalmotoxin
Phoratoxin
Agitoxin
Vanillotoxin
Phoneutria nigriventer toxin-3