Recombinant Tityus serrulatus Alpha-mammal toxin Ts2

Alpha toxins bind voltage-independently at site-3 of sodium channels and inhibit the inactivation of the activated channels, thereby blocking neuronal transmission. This toxin acts on Nav1.2/SCN2A, Nav1.3/SCN3A, Nav1.5/SCN5A, Nav1.6/SCN8A and Nav1.7/SCN9A voltage-gated sodium channels, with the highest affinity for Nav1.3/SCN3A, followed by Nav1.6/SCN8A and Nav1.7/SCN9A which are affected almost equally. Interestingly, shows a significant shift of the voltage dependence of activation for Nav1.3/SCN3A that is characteristic of beta-toxins . In addition, in presence of LPS, this toxin inhibits the release of NO, IL-6 and TNF-alpha in J774.1 cells . Further, in the absence of LPS, it stimulates the production of the anti-inflammatory cytokine IL-10 . This toxin is active on mammals.

If the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0.

We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. Our default final concentration of glycerol is 50%. Customers could use it as reference.

"The beta-type toxin Ts II from the scorpion Tityus serrulatus: amino acid sequence determination and assessment of biological and antigenic properties." Mansuelle P., Martin-Eauclaire M.-F., Chavez-Olortegui C., de Lima M.E., Rochat H., Granier C. Nat. Toxins 1:119-125 (1992)

The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself. Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.