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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 1 (Stx1) is produced by certain strains of Shigella dysenteriae and Escherichia coli, including strains that cause severe gastrointestinal diseases such as dysentery and hemorrhagic colitis. Structurally, Stx1 is an AB5 toxin, composed of one enzymatically active A subunit and five identical B subunits. The A subunit contains the N-glycosidase enzyme that inactivates the 28S ribosomal RNA, thereby halting protein synthesis and leading to cell death. The B subunits form a pentameric ring that binds to the glycolipid receptor Gb3 (globotriaosylceramide) on the surface of host cells, facilitating the entry of the A subunit into the cell. Functionally, Stx1 is highly cytotoxic and contributes to the pathogenicity of bacterial strains that produce it, leading to serious conditions such as hemolytic uremic syndrome (HUS) characterized by kidney failure, hemolytic anemia, and thrombocytopenia.
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