Reversibly blocks hKv1.1/KCNA1 (50% inhibition of current at 1 uM). Seems not to be voltage-dependent. Expressed by the venom gland. Has the structural arrangement of an alpha-helix connected to a beta-sheet by disulfide bonds (CSalpha/beta). Does not block hKv1.4/KCNA4, hERG1/KCNH2 and EAG/KCNH1 currents, at 1 uM. Belongs to the short scorpion toxin superfamily. Potassium channel inhibitor family. Alpha-KTx 02 subfamily.