inhibits Kv1.3/KCNA3 channel (1 uM of the toxin inhibits currents by 64.1%). Expressed by the venom gland. Has the structural arrangement of an alpha-helix connected to antiparallel beta-sheets by disulfide bonds (CS-alpha/beta). Does not block Kv7.1/KCNQ1 channels. Belongs to the short scorpion toxin superfamily. Potassium channel inhibitor family. Alpha-KTx 30 subfamily. PubMed:22511981 refers the nucleotide sequence FD664509 as coming from Scorpiops tibetanus.