HsTX1 TFA 

HsTX1 (TFA) toxin, from the scorpion Heterometrus spinnifer, is a 34-residue, C-terminally amidated peptide cross-linked by four disulfide bridges. HsTX1 (TFA) is an the inhibitor of potassium channel, with IC₅₀ for Kv1.3 of 12 pM and inhibits T_EM cell activation and attenuates inflammation in autoimmunity^[1][2][3].

3818.47 (free base)

C₁₄₉H₂₄₆N₅₄O₄₆S₉._xC₂HF₃O₂

固体

White to off-white

Ala-Ser-Cys-Arg-Thr-Pro-Lys-Asp-Cys-Ala-Asp-Pro-Cys-Arg-Lys-Glu-Thr-Gly-Cys-Pro-Tyr-Gly-Lys-Cys-Met-Asn-Arg-Lys-Cys-Lys-Cys-Asn-Arg-Cys-NH2 (Disulfide Bridge: Cys3-Cys24; Cys9-Cys29; Cys13-Cys31; Cys19-Cys34)

ASCRTPKDCADPCRKETGCPYGKCMNRKCKCNRC-NH2 (Disulfide Bridge: Cys3-Cys24; Cys9-Cys29; Cys13-Cys31; Cys19-Cys34)

Room temperature in continental US; may vary elsewhere.

Sealed storage, away from moisture

*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)

• [1]. M Harunur Rashid, et al. A potent and Kv1.3-selective analogue of the scorpion toxin HsTX1 as a potential therapeutic for autoimmune diseases. Sci Rep. 2014 Mar 28:4:4509. doi: 10.1038/srep04509.  [Content Brief]

  [2]. Lebrun, Bruno, et al. A four-disulphide-bridged toxin, with high affinity towards voltage-gated K+ channels, isolated from Heterometrus spinnifer (Scorpionidae) venom. Biochemical Journal. 328 (Pt 1): 321–327.

  [3]. Mark R. Tanner, et al. Prolonged immunomodulation in inflammatory arthritis using the selective Kv1.3 channel blocker HsTX1[R14A] and its PEGylated analog. Immunol. 2017 Jul; 180: 45–57. Published online 2017 Apr 4.