Margatoxin
Based on 1 publication(s) in Google Scholar
Margatoxin, an alpha-KTx scorpion toxin, is a high affinity inhibitor of Kv1.3 (Kd=11.7 pM). Margatoxin inhibits the Kv1.2 (Kd=6.4 pM) and Kv1.1 (Kd=4.2 nM). Margatoxin, a 39 amino-acid-long peptide, is isolated from the venom of the scorpion Centruroides margaritatus and widely used in ion channel research.
For research use only. We do not sell to patients.
- Purity : 99.17%
- CAS No.: 145808-47-5
- Formula: C178H286N52O50S7
- Molecular Weight:4178.95
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Storage:
Sealed storage, away from moisture and light, under nitrogen.
Powder -80°C, 2 years , -20°C, 1 year* In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light, under nitrogen)
To place orders, for customer services and technical support, please contact: MedChemExpress USA
Tel: 609-228-6898 E-mail: [email protected] [email protected]
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Biological Activity
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Chemical Information
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Solvent & Solubility
- Protocols
- Purity & Documentation
- References
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Help & FAQs
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Publications Citing Use of MedChemExpress (MCE) Margatoxin
More
Biological Activity
Description
IC50 & Target
Kd: 11.7 pM (Kv1.3), 6.4 pM (Kv1.2) and 4.2 nM (Kv1.1)[1]
In Vivo
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Chemical Information
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CAS No. 145808-47-5
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Appearance Solid
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Molecular Weight 4178.95
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Formula C178H286N52O50S7
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Color White to off-white
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Sequence
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 bridge:Cys7-Cys29;Cys13-Cys34;Cys17-Cys36)
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Sequence Shortening
TIINVKCTSPKQCLPPCKAQFGQSAGAKCMNGKCKCYPH(Disulfide bridge:Cys7-Cys29;Cys13-Cys34;Cys17-Cys36)
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Structure Classification
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Initial Source
Centruroides margaritatus
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Sealed storage, away from moisture and light, under nitrogen
Powder -80°C 2 years -20°C 1 year * In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture and light, under nitrogen)
Publications (1)
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Journal Impact Factor
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Most Recent
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Cell Death Discov
Therapeutic potential of voltage-dependent potassium channel subtype 1.3 blockade in alleviating macrophage-related renal inflammation and fibrogenesis. [Abstract]2025 May 5;11(1):218. PMID: 40324999
Solvent & Solubility
In Vitro:
DMSO : ≥ 2 mg/mL (0.48 mM; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)
* "≥" means soluble, but saturation unknown.
Protocols
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Two-electrode voltage clamp in Xenopus oocytes
Two-electrode voltage clamp measures whole-oocyte membrane current from Xenopus oocytes expressing exogenous ion channels, receptors, or transporters; one intracellular microelectrode senses membrane voltage, and the second injects current so the amplifier can hold the membrane at command voltages while recording the compensating current as the functional readout. The method is suited to Xenopus oocytes because their large size supports microinjection and intracellular electrode impalement, but the large membrane area can limit voltage-clamp speed and accuracy, especially for large or fast currents.
Purity & Documentation
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Data Sheet (294 KB)
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SDS (393 KB)
- English - EN (393 KB)
- Français - FR (393 KB)
- Deutsch - DE (393 KB)
- Norwegian - NO (393 KB)
- Español - ES (393 KB)
- Swedish - SV (393 KB)
- Italian - IT (393 KB)
- Korean - KR (393 KB)
- Portuguese - PT (393 KB)
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Handling Instructions (2659 KB)
References
[1]. Bartok A, et al. Margatoxin is a non-selective inhibitor of human Kv1.3 K+ channels. Toxicon. 2014 Sep;87:6-16. [Content Brief]
[2]. Chen YC, et al. PreImplantation factor prevents atherosclerosis via its immunomodulatory effects without affecting serum lipids. Thromb Haemost. 2016 May 2;115(5):1010-24. [Content Brief]
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
Margatoxin Related Classifications
HY-P1280 Related Classifications
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