Potent blocker of both large-conductance calcium-activated potassium channels (KCa1.1/KCNMA1) and voltage-gated potassium channels (Kv1.3/KCNA3). 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 01 subfamily.