Huwentoxin IV
Biological Activity
Selective NaV1.7 channel blocker. Preferentially inhibits neuronal NaV1.7, 1.2 and 1.3 (IC50 values are 26, 150 and 338 nM respectively), compared to muscle subtypes NaV1.4 and 1.5 (IC50 = >10 μM). Inhibits the channel by binding at the neurotoxin receptor site 4 in the S3-S4 linker of domain II, trapping the voltage sensor in the inward, closed configuration.
Technical Data
| M. Wt | 4106.79 |
| Formula | C174H278N52O51S6 |
| Sequence |
ECLEIFKACNPSNDQCCKSSKLVCSRKTRWCKYQI (Modifications: Disulfide bridge: 2-17,9-24,16-31) (Modifications: Ile-35 = C-terminal amide) |
| Storage | Store at -20°C |
| CAS Number | 526224-73-7 |
| PubChem ID | 90488968 |
| InChI Key | MJMLBAPXMAOKDU-UHFFFAOYSA-N |
| Smiles | [H]N[C@@H](CCC(O)=O)C(=O)N[C@H]1CSSC[C@@H]2NC(=O)[C@@H]3CSSC[C@H](NC(=O)[C@H](CC4=CNC5=C4C=CC=C5)NC(=O)[C@H](CCCNC(N)=N)NC(=O)[C@@H](NC(=O)[C@H](CCCCN)NC(=O)[C@H](CCCNC(N)=N)NC(=O)[C@H](CO)NC(=O)[C@H](CSSC[C@H](NC(=O)[C@H](C)NC(=O)[C@H](CCCCN)NC(=O)[C@H](CC4=CC=CC=C4)NC(=O)[C@@H](NC(=O)[C@H](CCC(O)=O)NC(=O)[C@H](CC(C)C)NC1=O)[C@@H](C)CC)C(=O)N[C@@H](CC(N)=O)C(=O)N1CCC[C@H]1C(=O)N[C@@H](CO)C(=O)N[C@@H](CC(N)=O)C(=O)N[C@@H](CC(O)=O)C(=O)N[C@@H](CCC(N)=O)C(=O)N3)NC(=O)[C@@H](NC(=O)[C@H](CC(C)C)NC(=O)[C@H](CCCCN)NC(=O)[C@H](CO)NC(=O)[C@H](CO)NC(=O)[C@H](CCCCN)NC2=O)C(C)C)[C@@H](C)O)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CC1=CC=C(O)C=C1)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@@H]([C@@H](C)CC)C(N)=O |
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.
Solubility Data
| Solubility | Soluble to 1 mg/ml in water |
Preparing Stock Solutions
The following data is based on the product molecular weight 4106.79. Batch specific molecular weights may vary from batch to batch due to solvent of hydration, which will affect the solvent volumes required to prepare stock solutions.
| Concentration / Solvent Volume / Mass | 1 mg | 5 mg | 10 mg |
|---|---|---|---|
| 1 mM | 0.24 mL | 1.22 mL | 2.43 mL |
| 5 mM | 0.05 mL | 0.24 mL | 0.49 mL |
| 10 mM | 0.02 mL | 0.12 mL | 0.24 mL |
| 50 mM | 0 mL | 0.02 mL | 0.05 mL |
Molarity Calculator
Reconstitution Calculator
Dilution Calculator
Product Datasheets
References
References are publications that support the biological activity of the product.
Xiao et al (2008) Tarantula huwentoxin-IV inhibits neuronal sodium channels by binding to receptor site 4 and trapping the domain II voltage sensor in the closed configuration. J.Biol.Chem. 283 27300 PMID: 18628201
Xiao et al (2011) Common molecular determinants of tarantula huwentoxin-IV inhibition of Na+ channel voltage sensors in domains II and IV. J.Biol.Chem. 286 27301 PMID: 21659528
If you know of a relevant reference for Huwentoxin IV, please let us know.
View Related Products by Target
View Related Products by Product Action
Keywords: Huwentoxin IV, Huwentoxin IV supplier, Huwentoxin, 4, sodium, channels, NaV1.7, blockers, antagonists, toxins, voltage, gated, Na+, selective, venoms, Voltage-gated, Sodium, Channels, 4718, Tocris Bioscience
Citations for Huwentoxin IV
Citations are publications that use Tocris products.
Currently there are no citations for Huwentoxin IV. Do you know of a great paper that uses Huwentoxin IV from Tocris? Please let us know.
Reviews for Huwentoxin IV
There are currently no reviews for this product. Be the first to review Huwentoxin IV and earn rewards!
Have you used Huwentoxin IV?
Submit a review and receive an Amazon gift card.
$50/€35/£30/$50CAN/¥300 Yuan/¥5000 Yen for first to review with an image
$25/€18/£15/$25CAN/¥75 Yuan/¥1250 Yen for a review with an image
$10/€7/£6/$10 CAD/¥70 Yuan/¥1110 Yen for a review without an image
Literature in this Area
Tocris offers the following scientific literature in this area to showcase our products. We invite you to request* or download your copy today!
*Please note that Tocris will only send literature to established scientific business / institute addresses.
Cancer Research Product Guide
A collection of over 750 products for cancer research, the guide includes research tools for the study of:
- Cancer Metabolism
- Epigenetics in Cancer
- Receptor Signaling
- Cell Cycle and DNA Damage Repair
- Angiogenesis
- Invasion and Metastasis
Cardiovascular Research Product Guide
A collection of over 250 products for cardiovascular research, the guide includes research tools for the study of:
- Hypertension
- Thrombosis and Hemostasis
- Atherosclerosis
- Myocardial Infarction
- Ischemia/Reperfusion Injury
- Arrhythmias
- Heart Failure
Ion Channel Product Listing
A collection of around 500 products for ion channel research, the listing includes research tools for the study of:
- Ligand-gated ion channels
- Voltage-gated ion channels
- Other Ion Channels
Pain Research Product Guide
A collection of over 250 products for pain research, the guide includes research tools for the study of:
- Nociception
- Ion Channels
- G-Protein-Coupled Receptors
- Intracellular Signaling
Epilepsy PosterNew
Epilepsy is a brain disease that affects 60 million people globally. More than 20 anti-seizure drugs are currently available, but these do not address the underlying causes of the condition. This poster summarizes current knowledge about the development of the condition and highlights some approaches that have disease-modifying effects in proof-of-concept studies.
