1. Membrane Transporter/Ion Channel
  2. Potassium Channel
  3. Phrixotoxin-1 TFA

Phrixotoxin-1 (TFA), from the venom of the theraphosid spider Phrixotrichus auratus, is a specific peptide inhibitor of Kv4 potassium channel.

For research use only. We do not sell to patients.

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Phrixotoxin-1 TFA Chemical Structure

Phrixotoxin-1 TFA Chemical Structure

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1 mg USD 350 In-stock
5 mg USD 880 In-stock
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Based on 1 publication(s) in Google Scholar

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Description

Phrixotoxin-1 (TFA), from the venom of the theraphosid spider Phrixotrichus auratus, is a specific peptide inhibitor of Kv4 potassium channel[1][2].

Molecular Weight

3548.30 (free base)

Formula

C156H240N44O37S7.xC2HF3O2

Appearance

Solid

Color

White to off-white

Sequence

Tyr-Cys-Gln-Lys-Trp-Met-Trp-Thr-Cys-Asp-Ser-Ala-Arg-Lys-Cys-Cys-Glu-Gly-Leu-Val-Cys-Arg-Leu-Trp-Cys-Lys-Lys-Ile-Ile-NH2 (Disulfide bridge: Cys2-Cys16; Cys9-Cys21; Cys15-Cys25)

Sequence Shortening

YCQKWMWTCDSARKCCEGLVCRLWCKKII-NH2 (Disulfide bridge: Cys2-Cys16; Cys9-Cys21; Cys15-Cys25)

Shipping

Room temperature in continental US; may vary elsewhere.

Storage

Sealed storage, away from moisture and light

Powder -80°C 2 years
-20°C 1 year

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

Solvent & Solubility
In Vitro: 

H2O : ≥ 100 mg/mL

*"≥" means soluble, but saturation unknown.

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Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

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Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

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Working solution concentration: mg/mL
This product has good water solubility, please refer to the measured solubility data in water/PBS/Saline for details.
The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only.If necessary, please contact MedChemExpress (MCE).
Purity & Documentation
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Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

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Product Name:
Phrixotoxin-1 TFA
Cat. No.:
HY-P2785A
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