Guangxitoxin 1E

Cat. No. 5676

Guangxitoxin 1E Glu-Gly-Glu-Cys-Gly-Gly-Phe-Trp-Trp-Lys-Cys-Gly-Ser-Gly-Lys-Pro-Ala-Cys-Cys-Pro-Lys-Tyr-Val-Cys-Ser-Pro-Lys-Trp-Gly-Leu-Cys-Asn-Phe-Pro-Met-Pro

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Biological Activity

Kv2.1 and Kv2.2 channel blocker (IC50 values are 1-3 nM). Enhances glucose-stimulated insulin secretion from human islets in vitro, but not from islet cells lacking the Kv2.1 channel. Has no significant effect on plasma insulin, glucagon or blood glucose levels in mice, but increases plasma somatostatin levels.

Technical Data


(Modifications: Disulfide bridge: 4-19,11-24,18-31)

Soluble to 1 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 / Product Datasheet / Safety Datasheet

References are publications that support the products' biological activity.

Li et al (2013) The role of voltage-gated potassium channels Kv2.1 and Kv2.2 in the regulation of insulin and somatostatin release from pancreatic islets. J.Pharmacol.Exp.Ther. 344 407. PMID: 23161216.

Herrington (2007) Gating modifier peptides as probes of pancreatic beta-cell physiology. Toxicon 49 231. PMID: 17101164.

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Citations are publications that use Tocris products.

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View Related Products by Product Action

Keywords: Guangxitoxin 1E, supplier, Kv2.1, Kv2.2, inward, rectifier, potassium, current, pancreatic, islets, beta, cells, inhibits, inhibitors, insulin, glucose, somatostatin, GxTx-1E, venoms, Tocris Bioscience, Voltage-gated Potassium (KV) Channel Blocker products

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