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Invitrogen
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For reconstitution, add sterile, distilled water to achieve a final antibody concentration of 1 mg/mL. Gently shake to solubilize the protein completely. Do not vortex. Reconstituted products should be stored at -80 °.
Shiga toxin 2 (Stx2) is another variant of the Shiga toxins produced by certain strains of Shigella dysenteriae and Escherichia coli. Structurally, like Shiga toxin 1, Stx2 is an AB5 toxin composed of one A subunit and five B subunits. The A subunit has an N-glycosidase activity that disrupts protein synthesis by cleaving a specific adenine residue from the 28S rRNA of the 60S ribosomal subunit, leading to cell death. The B subunits form a pentamer that binds to the glycosphingolipid receptor Gb3 (globotriaosylceramide) on the surface of host cells, facilitating the entry of the A subunit into the cells. Functionally, Stx2 is highly cytotoxic and plays a crucial role in the pathogenicity of the bacterial strains that produce it, leading to severe diseases such as hemolytic uremic syndrome (HUS), which is characterized by acute kidney failure, hemolytic anemia, and thrombocytopenia. Stx2 is known to be more potent and associated with more severe disease outcomes compared to Stx1.
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