This recombinant toxin inhibits mammalian voltage-gated potassium channels Kv1.3/KCNA3 (IC(50)=0.79 nM) and Kv1.2/KCNA2 (IC(50)=26.4 nM). Expressed by the venom gland. Has the structural arrangement of an alpha-helix connected to antiparallel beta-sheets by disulfide bonds (CS-alpha/beta). Belongs to the short scorpion toxin superfamily. Potassium channel inhibitor family. Alpha-KTx 11 subfamily.