Potent selective inhibitor of Kv1.1/KCNA1, Kv1.2/KCNA2, Kv1.3/KCNA3 voltage-gated potassium channels (PubMed:9446567). Weak inhibitor of Kv1.6/KCNA6 potassium channel (PubMed:9446567). It also shows a weak interaction with nicotinic acetylcholine receptors (nAChR), suggesting it may weakly inhibit it (PubMed:31276191). 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 Kv1.4/KCNA4 and Kv1.5/KCNA5 currents. Belongs to the short scorpion toxin superfamily. Potassium channel inhibitor family. Alpha-KTx 02 subfamily.