This product is shipped at ambient temperature and is stable at ambient temperature for up to two weeks. For long term storage refrigerated temperature is recommended.
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Fortfahren mit
Biologische Quelle
bovine
Assay
≥98%
Form
lyophilized powder
Mol-Gew.
~66 kDa
Aufgereinigt durch
heat shock fractionation
Ursprung
USA origin
Konzentration
≥95% protein
Gehalt an freien Fettsäuren
≤0.02%
Methode(n)
ELISA: suitable
blood typing: suitable
ligand binding assay: suitable
Verunreinigungen
essentially globulin free
Verlust
≤5%
pH-Wert
7
Löslichkeit
water: soluble (40 mg/ml)
UniProt-Hinterlegungsnummer
Fremdaktivität
protease ≤0.005 U/mg
Lagertemp.
2-8°C
Angaben zum Gen
bovine ... ALB(280717)
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Dieser Artikel | A4919 | A8022 | A9056 |
|---|---|---|---|
| assay ≥98% | assay ≥98% | assay ≥96% | assay ≥96% (agarose gel electrophoresis) |
| origin USA origin | origin USA origin | origin USA origin | origin USA origin |
| technique(s) ELISA: suitable, ligand binding assay: suitable, blood typing: suitable | technique(s) cell culture | mammalian: suitable | technique(s) ELISA: suitable, blocking: suitable, electrophoresis: suitable, western blot: suitable | technique(s) cell culture | mammalian: suitable |
| biological source bovine | biological source bovine | biological source bovine | biological source bovine |
| Quality Level 300 | Quality Level 200 | Quality Level 300 | Quality Level 200 |
| form lyophilized powder | form lyophilized powder | form lyophilized powder | form lyophilized powder |
Allgemeine Beschreibung
Anwendung
- als Bestandteil von Medien zur Differenzierung humaner pluripotenter Stammzellen[4]
- im Enzym-Immunoassay (ELISA) und Sandwich-ELISA [5]
- zur Permeabilisierung fetaler Kortikalzellen[6]
Dieses A7030 BSA wurde spezifisch als eine Komponente von Blockierungspuffer in einem Peptid-basierten ELISA zur Analyse von COVID-19/SARS-CoV-2-Proben eingesetzt (Poh, C.K. et al., Nat. Commun., 11(1), 2806 (2020)).
Biochem./physiol. Wirkung
Leistungsmerkmale und Vorteile
- Hitzeschockfraktioniert
- Protease-frei
- Fettsäuren-frei
- Weitgehend Globulin-frei
Angaben zur Herstellung
Ähnliches Produkt
Lagerklassenschlüssel
11 - Combustible Solids
WGK
WGK 1
Flammpunkt (°F)
Not applicable
Flammpunkt (°C)
Not applicable
Persönliche Schutzausrüstung
Eyeshields, Gloves
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If this material was inadvertently stored at room temperature, what is the room temperature stability?
1 Antwort-
Hilfreich?
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How long would a 20% BSA solution be stable in water stored at 4C?
1 Antwort-
If stored at 2-8 °C, a filter sterilized 20% BSA solution in water or aqueous buffer is generally stable for a minimum of 2.5 - 3 years.
Hilfreich?
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Is it possible that BSA contains ions such as Mg2+? I am considering adding it to the buffer, but I am concerned that it might activate the enzyme.
1 Antwort-
The magnesium content of this material is not routinely tested, but historical data indicates that three lots contained between 10-20 parts per million. Water is used as the pre-lyophilization solvent.
Hilfreich?
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Is product number A7030, Bovine Serum Albumin (BSA) glycosylated?
1 Antwort-
Unfortunately, there is currently no information available regarding the glycosylation status of BSA product A7030.
Hilfreich?
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How does protease content determined? With this value all proteases are included? Or only refers to plasmatic proteases.
1 Antwort-
The specific method used to test this material for protease activity is considered proprietary. However, it is based on the enzymatic cleavage of FITC-Casein. See the link below to review the FITC-Casein Enzymatic Assay to demonstrate the principal of this method.
https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/product/documents/353/850/c3777enz.pdfHilfreich?
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what is the expiry of this product?
1 Antwort-
This product is not assigned an expiration date. It is assigned a recommended retest date of 5 years after the quality release date. The recommended retest date is the period of time during which the product is expected to remain within established stability specifications, provided that it has been stored under defined conditions. After the Retest Date, product samples should be examined to ensure that the product is still in compliance with the established specifications. For more information, you may access the "Product Dating Information" document under "ADDITIONAL USEFUL DOCUMENTS ABOUT OUR PRODUCTS" at the bottom of the Quality Services page with this link: https://www.sigmaaldrich.com/US/en/life-science/quality-and-regulatory-management/quality-services.
Hilfreich?
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What is the extinction coefficient of this product?
1 Antwort-
The extinction coefficient for item A7030 has not been determined.
Hilfreich?
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is it suitable for cell culture?
1 Antwort-
This product has not been tested for suitability in cell culture. The end user would have to determine suitability. Please see the link below for a cell culture tested version of heat shock fractionated BSA:
https://www.sigmaaldrich.com/product/sigma/a4161Hilfreich?
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My BSA product is not sterile (open outside BSC hood)--- Can I filter-sterilize with 0.2um filter to use with viable cells solution?
1 Antwort-
Yes, prepared solutions of bovine serum albumin may be filter sterilized for use in cell culture by using a 0.22 um filter membrane.
Hilfreich?
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What is the Department of Transportation shipping information for this product?
1 Antwort-
Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
Hilfreich?
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