Ssm spooky toxin TFA  (Synonyms: SsTx Toxin TFA)

Ssm Spooky Toxin TFA is found in Scolopendra mutilans that potently inhibits KCNQ (voltage-gated potassium channel family 7) channels, with IC₅₀s of 2.8 μM, 5.26 μM and 0.1-0.3 M for Kv7.4, Kv1.3, and Shal channel, respectivily. Ssm Spooky Toxin TFA inhibits cytokine generation by specifically acting on the KV1.3 channel in T cells. Ssm Spooky Toxin TFA plays an essential role in the centipede’s circulatory system^{[1] [2][3]}.

6017.84 (free base)

C₂₇₀H₄₁₃N₆₉O₇₉S₄.xC₂HF₃O₂

固体

White to off-white

Glu-Val-Ile-Lys-Lys-Asp-Thr-Pro-Tyr-Lys-Lys-Arg-Lys-Phe-Pro-Tyr-Lys-Ser-Glu-Cys-Leu-Lys-Ala-Cys-Ala-Thr-Ser-Phe-Thr-Gly-Gly-Asp-Glu-Ser-Arg-Ile-Gln-Glu-Gly-Lys-Pro-Gly-Phe-Phe-Lys-Cys-Thr-Cys-Tyr-Phe-Thr-Thr-Gly (Disulfide bridge: Cys20-Cys46, Cys24-Cys48)

EVIKKDTPYKKRKFPYKSECLKACATSFTGGDESRIQEGKPGFFKCTCYFTTG (Disulfide bridge: Cys20-Cys46, Cys24-Cys48)

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]. Canwei Du, et al. Centipede KCNQ Inhibitor SsTx Also Targets KV1.3. Toxins (Basel). 2019 Feb; 11(2): 76.  [Content Brief]

  [2]. Shilong Yang, et al. Target switch of centipede toxins for antagonistic switch. Sci Adv. 2020 Aug 7;6(32):eabb5734.  [Content Brief]

  [3]. Anna Luo, et al. Centipede Venom: A Potential Source of Ion Channel Modulators. Int J Mol Sci.2022 Jun 26;23(13):7105.  [Content Brief]