product summary
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company name :
Alomone Labs
product type :
chemical
product name :
ω-Conotoxin CVIA
catalog :
STC-750
more info or order :
citations: 1
image
image 1 :

Peptide (C)GHSRLLNDTSAPHLE corresponding to amino acid residues 348 - 362 of rat KV1.4 (AccessionP15385). 1stextracellular loop.
image 2 :

Alomone Labs?-Conotoxin CVIA inhibits CaV2.2 channels expressed inXenopusoocytes. - A. Time course of?-Conotoxin CVIA(#STC-750) action on maximum CaV2.2 channels (?1B + ?2?1 + ?1) current elicited in 2 mM Ba2+. Peak 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 step to 50 mV. 50 nM ?-Conotoxin CVIA was 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 ?-Conotoxin CVIA (taken from the experiment in A).
product information
cat :
STC-750
SKU :
STC-750_0.1 mg
Product Name :
ω-Conotoxin CVIA
Group Type :
Non Antibodies
Product Type :
Proteins
Accession :
P58917
Accession Number :
https://www.uniprot.org/uniprotkb/P58917/entry
Applications :
Electrophysiology
Formulation :
Lyophilized from double distilled water (ddH2O). May contain TFA as a residual counter ion.
Storage After Reconstitution :
The reconstituted solution can be stored at 4°C for up to 1 week. For longer periods (up to 6 months), small aliquots should be stored at -20°C. We do not recommend storing the product in working solutions for longer than a few days. Avoid multiple freeze-thaw cycles.
Reconstitution and Solubility :
Centrifuge the vial (10,000 × g for 5 minutes) before adding solvent to spin down all the powder to the bottom of the vial. The lyophilized product may be difficult to visualize. Add solvent directly to the centrifuged vial. Gently tap, tilt, and roll the vial to aid dissolution. Avoid vigorous vortexing; light vortexing for up to 3 seconds is acceptable if needed. The product is soluble in pure water at high micromolar concentrations (100 µM - 1 mM). For long-term storage in solution, we recommend preparing a stock solution by dissolving the product in double-distilled water (ddH2O) at a concentration between 100-1000x of the final working concentration. Divide the stock solution into small aliquots and store at -20°C. Before use, thaw the relevant vial(s) and dilute to the desired working concentration in your working buffer. Centrifuge all product preparations before use. It is recommended to prepare fresh solutions in working buffers just before use. Avoid multiple freeze-thaw cycles to maintain biological activity.
Solubility :
Centrifuge the vial before adding solvent (10,000 x g for 5 minutes) to spin down all the powder to the bottom of the vial. The lyophilized product may be difficult to visualize. Add solvent directly to the centrifuged vial. Tap the vial to aid in dissolving the lyophilized product. Tilt and gently roll the liquid over the walls of the vial. Avoid vigorous vortexing. Light vortexing for up to 3 seconds is acceptable if needed. The product is soluble in pure water at high micromolar concentrations (100 µM - 1 mM). For long-term storage in solution, we recommend preparing a stock solution by dissolving the product in double-distilled water (ddH2O) at a concentration between 100-1000x of the final working concentration. Divide the stock solution into small aliquots and store at -20°C. Before use, thaw the relevant vial(s) and dilute to the desired working concentration in your working buffer. Centrifuge all product preparations before use. It is recommended to prepare fresh solutions in working buffers just before use. Avoid multiple freeze-thaw cycles to maintain biological activity.
Storage Before Reconstitution :
The product is shipped as a lyophilized powder at room temperature. Upon receipt, store the product at -20°C. Protect from moisture.
Origin :
Conus catus (Cat cone)
Source :
Synthetic peptide
Gene ID :
CACNA1B
Product Page - Scientific background :
CaV channels mediate Ca2+ influx through cell membrane as a response to membrane depolarization. N-type channels require strong depolarization for activation and are mostly expressed in neurons where they initiate neurotransmission in fast synapses and mediate Ca2+ entry into cell bodies and dendrites1.ω-conotoxin CVIA is a 27 amino acid neuropeptide2 belonging to a class of four new ω-conotoxins (CVIA-D) extracted from the venom of the Conus Catus snail. These peptides inhibit neuronal voltage sensitive Ca2+ channels in mammals. Interestingly, unlike other ω-conotoxins CVID has a loop 4 sequence and has the highest affinity to N-type channels over other types of Ca2+ channels while CVIA shows a lower affinity to N-type channels.CVIA is efficient in the management of severe pain, has clinical potential in ischemic brain injury and was also found to inhibit the contraction of electrically stimulated rat vas deferens with an IC50 of 205 nM3.
Supplier :
Alomone Labs
Target :
CaV2.2 channels
Long Description :
A Blocker of N-Type CaV Channels
Short Description :
A Blocker of N-Type CaV Channels
MW :
2642 Da
Synonyms :
Omega-conotoxin CVIA
Modifications :
Disulfide bonds between: Cys1-Cys16, Cys8-Cys20 and Cys15-Cys25 C25 - C-terminal amidation
Molecular formula :
C97H161N39O36S6
Effective Concentration :
50 - 200 nM
Activity :
ω-Conotoxin CVIA is an N-type Ca2+ channel blocker1.
Storage of solutions :
The reconstituted solution can be stored at 4°C for up to 1 week. For longer periods (up to 6 months), small aliquots should be stored at -20°C. We do not recommend storing the product in working solutions for longer than a few days. Avoid multiple freeze-thaw cycles.
Lead Time :
1-2 Business Days
Country of origin :
Israel/IL
Purity :
≥99% (HPLC)
Form :
Lyophilized
Comment :
Contact Alomone Labs for technical support and product customization
Sequence :
CKSTGASCRRTSYDCCTGSCRSGRC-NH2
Is Toxin :
Yes
UNSPSC :
12352202
Bioassay Tested :
yes
Steril endotoxin free :
no
more info or order :
company information

Alomone Labs
Jerusalem BioPark (JBP), Hadassah Ein Kerem
P.O. Box 4287
Jerusalem 9104201
P.O. Box 4287
Jerusalem 9104201
info@alomone.com
http://www.alomone.com972 2 531 8002
headquarters: Israel
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