ω-Hexatoxin-Hv1a TFA
Based on 1 Customer Validation
ω-Hexatoxin-Hv1a (ω-ACTX-Hv1; ω-Atracotoxin-HV1) TFA is an orally active insecticidal neurotoxin containing an inhibitor cystine knot motif and a selective calcium channel inhibitor. ω-Hexatoxin-Hv1a TFA blocks L-type voltage-dependent Ca2+ channels and reduces intracellular calcium ion concentration, thereby decreasing apoptosis, necroptosis and oxidative stress, and promoting cell recovery and energy level elevation. ω-Hexatoxin-Hv1a TFA causes larval paralysis and death by impairing neurotransmission in the central nervous system of insects. It shows high injectable toxicity against insects of multiple orders, but exhibits weak oral toxicity. ω-Hexatoxin-Hv1a TFA is widely applicable to studies related to ischemia-reperfusion injury, atopic dermatitis, and ischemic injury of cardiomyocytes and neurons.
For research use only. We do not sell to patients.
- Purity: 97.49%
- Formula: C162H247N49O61S6·xC2HF3O2
- Molecular Weight:4049.38 (free base)
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Storage:
Sealed storage, away from moisture.
Powder -80°C, 2 years , -20°C, 1 year* In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)
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Biological Activity
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Chemical Information
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Solvent & Solubility
- Purity & Documentation
- References
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Help & FAQs
All Calcium Channel Isoforms
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Biological Activity
ω-Hexatoxin-Hv1a TFA (10-50 nM; 3 h of reperfusion) inhibits ischemia/reperfusion-induced apoptosis, suppresses ischemia/reperfusion-induced necrosis, alleviates intracellular calcium overload, and promotes the recovery of cell index in CHO-K1 epithelial cells[1].
Recombinant ω-Hexatoxin-Hv1a TFA (100-200 ng) retains immunoreactivity after fusion with GNA, which is confirmed by Western blotting analysis of 200 ng and 100 ng loaded samples of the intact Hv1a/GNA fusion protein[2].
ω-Hexatoxin-Hv1a TFA (10-50 nM; 18 h) blocks AC-1001 H3-induced apoptosis in CHO-K1 cells in a dose-dependent manner in vitro. At 50 nM (18 h incubation), it reduces the apoptosis level to that of the control group, while 10 nM used alone does not alter the baseline apoptosis level[3].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Cell Line:CHO-K1 Chinese hamster ovary epithelial cells
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Concentration:10 nM, 50 nM
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Incubation Time:3 h (reperfusion)
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Result:Maintained CHO-K1 cell apoptosis levels at the normal condition level at 50 nM.
Showed no effect on apoptosis at 10 nM.
Maintained necrosis levels at the normal condition level at both 10 nM and 50 nM.
Reduced intracellular calcium ion concentration during reperfusion to levels correlating with reduced apoptosis and necrosis at both 10 nM and 50 nM. Caused the cell index to return to pre-reperfusion values within 1 h of reperfusion start at both 10 nM and 50 nM, compared to the no-toxin group which returned to normal levels only after 5 h.
ω-Hexatoxin-Hv1a (9.6 μg per larva; p.o.; daily; 4 days) TFA alone via daily sucrose droplets has no insecticidal activity against fifth stadium Mamestra brassicae larvae[2].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
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Animal Model:Mamestra brassicae Cabbage moth (fifth stadium, 40-70 mg)[2]
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Dosage:46 μg/g insect; 92 μg/g insect; 184 μg/g insect
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Administration:Injection
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Result:Caused 20% mortality at 72 hours post-injection at 46 μg/g insect.
Caused 80% mortality at 72 hours post-injection at 92 μg/g insect.
Caused 90% mortality at 72 hours post-injection at 184 μg/g insect.
Induced paralysis in larvae injected with doses of 46 μg/g insect and above.
Significantly reduced survival compared to controls.
Chemical Information
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Appearance Solid
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Molecular Weight 4049.38 (free base)
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Formula C162H247N49O61S6·xC2HF3O2
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Color White to off-white
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Synonyms
ω-ACTX-Hv1 TFA; ω-Atracotoxin-HV1 TFA
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Sequence
Ser-Pro-Thr-Cys-Ile-Pro-Ser-Gly-Gln-Pro-Cys-Pro-Tyr-Asn-Glu-Asn-Cys-Cys-Ser-Gln-Ser-Cys-Thr-Phe-Lys-Glu-Asn-Glu-Asn-Gly-Asn-Thr-Val-Lys-Arg-Cys-Asp (Disulfide bridge:Cys4-Cys18, Cys11-Cys22, Cys17-Cys36)
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Sequence Shortening
SPTCIPSGQPCPYNENCCSQSCTFKENENGNTVKRCD (Disulfide bridge:Cys4-Cys18, Cys11-Cys22, Cys17-Cys36)
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Sealed storage, away from moisture
Powder -80°C 2 years -20°C 1 year * In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)
Solvent & Solubility
H2O : ≥ 50 mg/mL
* "≥" means soluble, but saturation unknown.
Purity & Documentation
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Data Sheet (299 KB)
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SDS (252 KB)
- English - EN (252 KB)
- Français - FR (252 KB)
- Deutsch - DE (252 KB)
- Norwegian - NO (252 KB)
- Español - ES (252 KB)
- Swedish - SV (252 KB)
- Italian - IT (252 KB)
- Portuguese - PT (252 KB)
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Handling Instructions (2659 KB)
References
[1]. Iurova EV, et al. Effect of the Peptide Calcium Channel Blocker ω-hexatoxin-Hv1a on Cell Death during Ischemia/Reperfusion in vitro. Sovrem Tekhnologii Med. 2023;15(1):21-27. [Content Brief]
[2]. Fitches EC, et al. Fusion to snowdrop lectin magnifies the oral activity of insecticidal ω-Hexatoxin-Hv1a peptide by enabling its delivery to the central nervous system. PLoS One. 2012;7(6):e39389. [Content Brief]
[3]. Iurova E, et al. Arthropod toxins inhibiting Ca2+ and Na+ channels prevent AC-1001 H3 peptide-induced apoptosis. J Pept Sci. 2021;27(1):e3288. [Content Brief]
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
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