Cat. No. 3563

Margatoxin Thr-Ile-Ile-Asn-Val-Lys-Cys-Thr-Ser-Pro-Lys-Gln-Cys-Leu-Pro-Pro-Cys-Lys-Ala-Gln-Phe-Gly-Gln-Ser-Ala-Gly-Ala-Lys-Cys-Met-Asn-Gly-Lys-Cys-Lys-Cys-Tyr-Pro-His     (Disulfide bridges: 7 - 29, 13 - 34, 17 - 36)

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Alternative Name: MgTX

Biological Activity

Potent KV1.3 channel blocker (IC50 = 36 pM). Displays no effect at calcium-activated channels. Reduces VEGF-induced transmembrane calcium influxes and nitric oxide production in human endothelial cells.

Technical Data


(Modifications: Disulfide bridge between 7 - 29, 13 - 34, 17 - 36)

Soluble to 0.50 mg/ml in water
Store at -20°C

The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.
All Tocris products are intended for laboratory research use only.

Certificate of Analysis / Safety Data Sheet

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Garcia-Calvo et al (1993) Purification, characterization, and biosynthesis of Margatoxin, a component of Centruroides margaritatus venom that selectively inhibits voltage-dependent potassium channels. J.Biol.Chem. 268 18866. PMID: 8360176.

Erdogan et al (2005) Margatoxin inhibits VEGF-induced hyperpolarization, proliferation and nitric oxide production of human endothelial cells. J.Vasc.Res. 42 368. PMID: 16043967.

If you know of a relevant citation for this product please let us know.

View Related Products by Product Action

Keywords: Margatoxin, supplier, Kv1.3, channel, blocker, voltage-gated, potassium, channels, MgTX, MTX, Voltage-gated Potassium (KV) Channel Blockers

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