Inhibitor of voltage-gated potassium channels (Kv). This protein is capable of displacing the binding of radio-labeled noxiustoxin (AC P08815) to rat brain synaptosomes with high affinity (about 100 pM). It is also capable of inhibiting transient potassium-currents (resembling I(A)-type currents), in cultured rat cerebellar granule cells. About 50% of the peak currents are reduced by application of a 1.5 uM solution of this toxin. Is lethal to mice (when less than 100 ug are injected). Expressed by the venom gland. Has the structural arrangement of an alpha-helix connected to a beta-sheet by disulfide bonds (CSalpha/beta). Belongs to the short scorpion toxin superfamily. Potassium channel inhibitor family. Alpha-KTx 02 subfamily.