Protoxin II (ProTx II)

Catalog No. ABIN1540119

Product Details

Target: Protoxin II

Application: Blocking Reagent (BR)

Purpose: ProTx-2 is a Nav1.7 channel selective blocker

Sequence: Tyr-Cys2-Gln-Lys-Trp-Met-Trp-Thr-Cys9-Asp-Ser-Glu-Arg-Lys-Cys15-Cys16-Glu-Gly-Met-Val-Cys21-Arg-Leu-Trp-Cys25-Lys-Lys-Lys-Leu-Trp-OHDisulfid e bonds between Cys2-Cys16, Cys9-Cys21and Cys15-Cys25

Application Details

Restrictions: For Research Use only

Handling

Target Details

Target: Protoxin II

Background: Protoxin II is a toxin that was originally isolated from Thrixopelma pruriens (Peruvian green velvet tarantula). Protoxin II inhibits voltage-gated calcium and sodium channels (site 4). This toxin inhibits activation by shifting the voltage-dependence of channel activation to more positive potentials. The toxin potently inhibits all sodium channel subtypes tested (Nav1.2/SCN2A, Nav1.5/SCN5A, Nav1.7/SCN9A, and Nav1.8/SCN10A). It is approximately 15-fold more potent on Nav1.7/SCN9A than on Nav1.5/SCN5A channels and acts on Cav3.1/CACNA1G and interacts more weakly with the related T-Type channel Cav3.2/CACNA1H but potently inhibits the L-type calcium channel Cav1.2/CACNA1C. Protoxin II also binds to phospholipids. ProTx-II, a selective inhibitor of Nav1.7 sodium channels,blocks action potential propagation in nociceptors.

Molecular Weight: 3828 Da

CAS-No: 484598-36-9