HsTX1

CAS: 201948-00-7 F: C149H246N54O46S9 W: 3818.47

HsTX1, from the scorpion Heterometrus spinnifer, is a 34-residue, C-terminally amidated peptide cross-linked by four dis

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Bioactivity	HsTX1, from the scorpion Heterometrus spinnifer, is a 34-residue, C-terminally amidated peptide cross-linked by four disulfide bridges. HsTX1, an the inhibitor of potassium channel, with IC50 for Kv1.3 of 12 pM inhibits TEM cell activation and attenuates inflammation in autoimmunity[1][2][3].
Name	HsTX1
CAS	201948-00-7
Sequence	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)
Shortening	ASCRTPKDCADPCRKETGCPYGKCMNRKCKCNRC-NH2 (Disulfide Bridge: Cys3-Cys24; Cys9-Cys29; Cys13-Cys31; Cys19-Cys34)
Formula	C149H246N54O46S9
Molar Mass	3818.47
Transport	Room temperature in continental US; may vary elsewhere.
Storage	Please store the product under the recommended conditions in the Certificate of Analysis.
Reference	[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. [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.