May play a role in blocking voltage-gated potassium channels Kv1.2/KCNA2, and Kv1.3/KCNA3. Blocks the voltage-gated potassium channel Kv1.3/KCNA3, with an IC(50) of 118.3 +-55.8 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). Has no effect on rat Kv1.2/KCNA2 channel. Belongs to the short scorpion toxin superfamily. Potassium channel inhibitor family. Alpha-KTx 16 subfamily.