ProTx II

Cat. No. 4023

ProTx II Tyr-Cys-Gln-Lys-Trp-Met-Trp-Thr-Cys-Asp-Ser-Glu-Arg-Lys-Cys-Cys-Glu-Gly-Met-Val-Cys-Arg-Leu-Trp-Cys-Lys-Lys-Lys-Leu-Trp

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Biological Activity

Selective NaV1.7 channel blocker. Shifts activation gating positively and decreases current magnitude. Displays 100-fold selectivity over other sodium channel subtypes.

Technical Data


(Modifications: Disulfide bridge: 2-16, 9-21, 15-25)

Soluble to 0.10 mg/ml in 4:1 Acetonitrile : 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

Certificate of Analysis: View current batch
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Safety Data Sheet: View Safety Data Sheet

Edgerton et al (2008) Evidence for multiple effects of ProTxII on activation gating in NaV 1.5. Toxicon. 52 489. PMID: 18657562.

Schmalhofer et al (2008) ProTx-II, a selective inhibitor of NaV 1.7 sodium channels, blocks action potential propagation in nociceptors. Mol.Pharmacol. 74 1476. PMID: 18728100.

Smith et al (2007) Molecular interactions of the gating modifier toxin ProTx-II with NaV 1.5: implied existence of a novel toxin binding site coupled to activation. J.Biol.Chem. 282 12687. PMID: 17339321.

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Keywords: ProTx II, supplier, toxins, voltage, gated, sodium, Na+, channels, NaV1.7, potent, selective, blockers, Tocris Bioscience, Voltage-gated Sodium (NaV) Channel Blocker products

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