ADWX-1 is an optimised synthetic analog of the scorpion peptide BmKTx. ADWX-1 is known to block Kv1.3 channel with a high affinity (IC50 = 1.89 pM) and selectivity (340 fold higher than Kv1.1). ADWX1 appears to be an interesting therapeutic candidate to treat auto-immune disorders such as multiple sclerosis, type-1 diabetes, rheumatoid arthritis and psoriasis. This peptide is a valuable tool for studying the structure-function of Kv1.3 channel and auto-immunity mechanisms.