Verotoxin II-B subunit (Shiga-like, SLT-2b)

Supplier:

United States Biological

Cat no: V2121-70A

Verotoxin II-B subunit (Shiga-like, SLT-2b)

Shiga-like toxins, also called verotoxins, inhibit protein synthesis in eukaryotic cells. These toxins play a role in hemorrhagic colitis and hemolytic uremic syndrome. They damage endothelial cells in both kidney and brain, causing renal failure and neurological complications. The protein structure consists of two domains: the A polypeptide confers the activity, and the B polypeptide pentamer confers the receptor-specific binding. The A polypeptide has an N-glycosidase activity that cleaves an adenine from the 28S rRNA of the 60S cytoplasmic ribosome. This activity renders the 28S rRNA unable to interact with the elongation factors EF-1 and EF-2, thus inhibiting protein synthesis. The B polypeptide forms a pentamer that binds to the eukaryotic cell receptor globotriaosylceramide (Gb3). Shiga-like toxins then enter the cells by receptor-mediated endocytosis. The effects of shiga-like toxin 1 and shiga-like toxin 2 have been shown to vary with cell type because Gb3 receptors are present in certain tissues, particularly sensory neurons and renal cells. In those cell types, the receptor concentration and binding is modulated by factors such as tumor necrosis factor (TNF), interleukins, and fatty acid content of the membranes. Shiga-like toxin 1 and shiga-like toxin 2 differ in their effects on various tissues. They have both been shown to induce apoptosis in several different cell types. In addition to inhibiting protein synthesis, shiga- like toxins induce cytokines such as interleukin-1, interleukin-6, and interleukin-8. They have also been shown to induce expression of tumor necrosis factor (TNF), induce F-actin depolymerization, and activate a src kinase. Shiga-like toxin 1 and 2 are from E. coli. Shiga-like toxins are very toxic and should be handled with extreme caution.\n\nApplications: \nSuitable for use in ELISA and Neutralization. Other applications not tested.\n\nRecommended Dilutions:\nELISA: 1:20-1:200\nOptimal dilutions to be determined by the researcher.\n\nStorage and Stability:\nMay be stored at 4 degrees C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20 degrees C. Aliquots are stable for 12 months after receipt. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.

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SPECIFICATIONS

Catalog Number

V2121-70A

Size

1ml

Applications

ELISA

Hosts

Mouse

Form

Supplied as a liquid in PBS, pH 7.2, 0.1% sodium azide. No stabilizing proteins added.

P Type

Mab

Purity

Purified by Protein A affinity chromatography (>90%).

Isotype

IgG

Additional Info

Recognizes Verotoxin II-B subunit (SLT-2b). Neutralizes Verotoxin.

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SUPPLIER INFO

United States Biological

Address:

4 Technology Way, Salem, MA 01970, US

Phone:

+1 800 520 3011

Website:

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