343781-M
ω-Conotoxin GVIA, Conus geographus
A neurotoxin that acts as an antagonist of voltage-activated N-type Ca2+ channels and of neurotransmitter release at neuronal synapses.
Synonym(s):
ω-Conotoxin GVIA, Conus geographus, ω-CgTx GVIA
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About This Item
Empirical Formula (Hill Notation):
C120H182N38O43S6
CAS Number:
Molecular Weight:
3037.35
MDL number:
UNSPSC Code:
12352202
NACRES:
NA.77
Quality Level
Assay
≥98% (HPLC)
form
lyophilized
manufacturer/tradename
Calbiochem®
storage condition
OK to freeze
solubility
water: 250 μg/mL
aqueous buffer: soluble
storage temp.
−20°C
General description
A neurotoxin that acts as an antagonist of voltage-activated N-type Ca2+ channels and of neurotransmitter release at neuronal synapses. Its antagonistic activity is attributed to a tyrosine residue at position 13. Does not bind to dihydropyridine- or verapamil-binding sites. Also reported to inhibit ATP-induced inward currents mediated by P2X2/X3 receptors (IC50 = 21.2 nM for P2X3 and 3.84 µM for P2X2/X3 heterooligomeric receptors).
Biochem/physiol Actions
Primary Target
Voltage-activated N-type Ca2+ channels
Voltage-activated N-type Ca2+ channels
Target IC50: 21.2 nM for P2X3 and 3.84 µM for P2X2/X3 heterooligomeric receptors
Warning
Toxicity: Highly Toxic (H)
Sequence
H-Cys¹-Lys-Ser-Hyp-Gly-Ser-Ser-Cys⁸-Ser-Hyp-Thr-Ser-Tyr-Asn-Cys¹⁵-Cys¹⁶-Arg-Ser-Cys¹⁹-Asn-Hyp-Tyr-Thr-Lys-Arg-Cys²⁶-Tyr-NH₂ (disulfide bonds: 1 → 16; 8 → 19; 15 → 26)
Reconstitution
Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 6 months at -20°C.
Other Notes
Lalo, U.V., et al. 2001. Brain Res. Bull.54, 507.
Kim, J.I., et al. 1995. Biochem. Biophys. Res. Commun. 206, 449.
Abbott, J.R., and Litzinger, M.J. 1994. Int. J. Dev. Neurosci. 12, 43.
Olivera, B.M., et al. 1991. J. Biol. Chem.266, 22067.
Protti, D.A., et al. 1991. Brain Res.557, 336.
Werth, J.L., et al. 1991. Mol. Pharmacol.40, 742.
Koyano, K., et al. 1987. Eur. J. Pharmacol.135, 337.
Abe, T., et al. 1986. Neurosci. Lett.71, 203.
Kim, J.I., et al. 1995. Biochem. Biophys. Res. Commun. 206, 449.
Abbott, J.R., and Litzinger, M.J. 1994. Int. J. Dev. Neurosci. 12, 43.
Olivera, B.M., et al. 1991. J. Biol. Chem.266, 22067.
Protti, D.A., et al. 1991. Brain Res.557, 336.
Werth, J.L., et al. 1991. Mol. Pharmacol.40, 742.
Koyano, K., et al. 1987. Eur. J. Pharmacol.135, 337.
Abe, T., et al. 1986. Neurosci. Lett.71, 203.
Legal Information
Not available for sale outside of the United States.
CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Regulatory Information
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