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S4881

Sigma-Aldrich

Staphylococcal enterotoxin B from Staphylococcus aureus

Synonym(s):

Enterotoxin B, Staphylococcal, SEB

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About This Item

CAS Number:
11100-45-1
MDL number:
MFCD00082017
UNSPSC Code:
12352202
NACRES:
NA.25
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contains

sodium phosphate buffer as balance

Quality Level

300

composition

Protein, ~25% Lowry

availability

not available in USA

impurities

Staphylococcal enterotoxin A (SEA), essentially free

application(s)

metabolomics
vitamins, nutraceuticals, and natural products

storage temp.

2-8°C

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Application

Staphylococcal enterotoxin B (SEB) which binds to MHC class II molecules and specific Vβ regions of T cell receptors (TCR), resulting in the activation of both monocytes/macrophages and T lymphocytes may be used as a superantigen and immune system activator. SEB may be used as a reference material in the development of SEB detection systems.

Biochem/physiol Actions

A superantigen for T-lymphocytes. Activator of the immune system that binds to major histocompatibility complex (MHC) antigens[1] and CD28.[2]

Packaging

Package size based on protein content.

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Product No.
Description
Pricing

Pictograms

Skull and crossbones
GHS06

Signal Word

Danger

Hazard Classifications

Acute Tox. 1 Dermal - Acute Tox. 1 Inhalation - Acute Tox. 1 Oral - Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
0000103755
0000209972
0000103755
11181129
0000209972

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Clarifying the mechanism of superantigen toxicity.
John D Fraser
PLoS biology, 9(9), e1001145-e1001145 (2011-09-21)
Winnie Bergstedt et al.
PloS one, 5(6), e11277-e11277 (2010-07-02)
Tuberculin is still the only available skin test reagent for the diagnosis of mycobacterial infection. The product has a remarkable sensitivity, but poor specificity. Previous studies, including two human phase I clinical trials, have indicated that rdESAT-6 has a potential
Oliver G Weingart et al.
Sensors (Basel, Switzerland), 12(2), 2324-2339 (2012-03-23)
Prevalent incidents support the notion that toxins, produced by bacteria, fungi, plants or animals are increasingly responsible for food poisoning or intoxication. Owing to their high toxicity some toxins are also regarded as potential biological warfare agents. Accordingly, control, detection
Bacterial superantigens
Proft, T. and Fraser, J.D.
Clinical and Experimental Immunology, 133, 299-299 (2008)
Iria Gomez-Tourino et al.
Nature communications, 8(1), 1792-1792 (2017-11-28)
Defects in T cell receptor (TCR) repertoire are proposed to predispose to autoimmunity. Here we show, by analyzing >2 × 10
View All Related Papers

Questions

1–3 of 3 Questions  

  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  3. こんにちは、この商品の容量をお聞きしたいのですが、1MGと表記されている場合、1miligramということでしょうか？ 溶かしてから調剤したいのですが。 溶かして調剤する際のプロトコルはあるのでしょうか？

    1 answer

    1. Yes, the 1MG does stand for one milligram. The product is soluble in water at 4 mg/ml. It may also be dissolved in an aqueous buffer such as PBS. See the link below to the product information sheet for additional solution stability information:
      https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/product/documents/126/857/s4881pis.pdf

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