Comparison

GsAF-II European Partner

Item no. ALO-STG-350-5mg
Manufacturer Alomone
Amount 5 mg
Quantity options 0.1 mg 0.25 mg 0.5 mg 10 mg 1 g 50 ug 5 mg
Category
Type Molecules
Format Lyophilized
Specific against other
Purity ≥98% (HPLC)
Formula Lyophilized from double distilled water (ddH2O). May contain TFA as a residual counter ion.
Sequence YCQKWMWTCDEERKCCEGLVCRLWCKKKIEW-OH
ECLASS 10.1 32169090
ECLASS 11.0 32169090
UNSPSC 12000000
Shipping Condition Room temperature
Available
Manufacturer - Type
Non Antibodies
Manufacturer - Applications
Electrophysiology
Manufacturer - Category
Proteins
Manufacturer - Targets
TTX-sensitive NaV, KV11.1 channels
Country of Origin
Israel
Shipping Temperature
The product is shipped as a lyophilized powder at room temperature. Upon receipt, store the product at -20°C. Protect from moisture.
Storage Conditions
Storage as Solution: 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. - 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. - 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.
Molecular Weight
3979.8 Da
Manufacturer - Format
Lyophilized
Short description
A Blocker of TTX-Sensitive NaV and KV11.1 Channels
Description
Kappa-theraphotoxin-Gr2c, κ-TRTX-Gr2c, GsAF II, GsAFII, Mechanotoxin-α - A Blocker of TTX-Sensitive NaV and KV11.1 Channels
Reconstitution
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.
Specificity

A Blocker of TTX-Sensitive NaV and KV11.1 Channels

PH
7, 4
UNSPSC
12352202
Origin
Grammostola rosea (Chilean rose tarantula) (Grammostola spatulata)
Modifications
Disulfide bonds between: Cys2-Cys16, Cys9-Cys21 and Cys15-Cys25
Effective Concentration
1 - 24 µM
Activity
GsAF-II is a blocker of TTX-sensitive NaV and KV11.1 channels1.
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.
Sterile endotoxin free
no
Bioassay tested
yes
Scientific Background
The tetrodotoxin (TTX)-sensitive Na+ channels are differentially distributed in the central and peripheral nervous system, in skeletal muscle, and in cardiac muscle1. Several venom-derived peptides are known to modify the gating properties of ion channels, and the study of their mechanisms of action is expected to contribute to the elucidation of the molecular motions associated with channel gating2.Tarantula venoms are a library of interesting compounds, some of which are exquisite modulators of many types of ion channels. A large number of spider toxins have been demonstrated to modulate NaV channels3.GsAF-II (also termed κ-theraphotoxin-Gr2c) is a peptidyl toxin originally isolated from the venom of Grammostola rosea spider. This toxin has antinociceptive and antiarrhythmic effects in mammals. The peptide is reported to block the following voltage-gated Na+ channels: NaV1.1, NaV1.2, NaV1.3, NaV1.4, NaV1.6 and NaV1.7 with IC50 values of 5.7, 12, 24, 4, 6.6 and 1.3 µM, respectively. This peptide also blocks hERG1 with an IC50 value of 4.7 µM4.

Note: The presented information and documents (Manual, Product Datasheet, Safety Datasheet and Certificate of Analysis) correspond to our latest update and should serve for orientational purpose only. We do not guarantee the topicality. We would kindly ask you to make a request for specific requirements, if necessary.

All products are intended for research use only (RUO). Not for human, veterinary or therapeutic use.

Amount: 5 mg
Available: In stock
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