Margatoxin
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)
The technical data provided above is for guidance only.
For batch specific data refer to the Certificate of Analysis.
Tocris products are intended for laboratory research use only, unless stated otherwise.
Background References
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Purification, characterization, and biosynthesis of Margatoxin, a component of Centruroides margaritatus venom that selectively inhibits voltage-dependent potassium channels.
Garcia-Calvo et al.
J.Biol.Chem., 1993;268:18866 -
Margatoxin inhibits VEGF-induced hyperpolarization, proliferation and nitric oxide production of human endothelial cells.
Erdogan et al.
J.Vasc.Res., 2005;42:368
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Margatoxin was used in our lab to study SK channel opening and blocking effect. Margatoxin was used to compare with other selective SK channel blockers as they do not show significant SK blocking. The product performed excellent in sterile cell culture labs and would high recommend. The product is water soluble which is also a plus.
