Blocks voltage-gated potassium channels (mKv1.1/KCNA1 (Kd>25 nM), rKv1.2/KCNA2 (Kd=2 nM), mKv1.3/KCNA3 (Kd=1 nM), hKv1.5/KCNA5 (Kd>25 nM) and mKv3.1/KCNC1 (Kd>25 nM)) and calcium-activated potassium channels (KCa1.1/KCNMA1 and KCa3.1/KCNN4, Kd>25 nM). 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.