This recombinant toxin inhibits the mammalian voltage-gated potassium channels Kv1.3/KCNA3 in vitro with an IC(50) of 26.40 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.