Cat #: STC-420
Lyophilized Powder yes
Origin Synthetic peptide
MW: 2783 Da
Purity: >99% (HPLC)
Effective concentration 10-50 nM.
Modifications Disulfide bonds between Cys1-Cys16, Cys8-Cys20, and Cys15-Cys26. Ile26 – C-terminal amidation.
Molecular formula C107H180N38O35S7.
Activity ω-Conotoxin CVIC is a blocker of N-, P/Q-type CaV channels1.
- Lewis, R.J. et al. (2000) J. Biol. Chem. 275, 35335.
Shipping and storage Shipped at room temperature. Product as supplied can be stored intact at room temperature for several weeks. For longer periods, it should be stored at -20°C.
Solubility Any aqueous buffer. Centrifuge all product preparations before use (10,000 x g 5 min).
Storage of solutions Up to two weeks at 4°C or three months at -20°C.
- Alomone Labs ω-Conotoxin CVIC inhibits CaV2.2 channels expressed in Xenopus oocytes.A. Time course of ω-Conotoxin CVIC (#STC-420) action on CaV2.2 maximum current amplitude. Current amplitudes were plotted as a function of time. Membrane potential was held at -100 mV and oocytes were stimulated by a 100 ms voltage ramp to +50 mV in 2 mM Ba2+. 50 nM ω-Conotoxin CVIC were perfused as indicated by the bar (green) for 5 min. B. Superimposed examples of CaV2.2 channel maximum peak current in the absence (control) and presence (green) of 50 nM ω-Conotoxin CVIC (taken from the experiment in A).
Scientific background ω-Conotoxin CVIC is a peptide toxin originally isolated from the cat cone (Conus Catus). It is a blocker of voltage-gated N-,P- and Q-type CaV channels. CVIC has an effective concentration of 10-50 nM with an IC50 of 7.6 nM for N-type channels and 31 nM for P- and Q-type channels. Compared to other ω-conotoxins, CVIC is a fairly poor inhibitor of N-type channels and only a moderate inhibitor of P- and Q-type channels. Cloning and sequencing of mRNA transcripts from the venom ducts of the sea-snail failed to isolate CVIC’s mRNA transcript thus suggesting that this ω-conotoxin is not found abundantly in the Conus Catus species and may be found in other species of the cone snail family1.
Target N-, P/Q-type channels
Peptide Content: 100%
For research purposes only, not for human use
Last Update: 10/04/2023