ChlorotoxinH-Met-Cys-Met-Pro-Cys-Phe-Thr-Thr-Asp-His-Gln-Met-Ala-Arg-Lys-Cys-Asp-Asp-Cys-Cys-Gly-Gly-Lys-Gly-Arg-Gly-Lys-Cys-Tyr-Gly-Pro-Gln-Cys-Leu-Cys-Arg-NH2 (Disulfide bonds between Cys2 and Cys19/Cys5 and Cys28/Cys16 and Cys33/Cys20 and Cys35)Cltx (Egyptian scorpion)