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A7294

Sigma-Aldrich

Avidin–Alkaline Phosphatase

buffered aqueous solution

Synonym(s):

Avidin–AP

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About This Item

MDL number:
UNSPSC Code:
12352203
NACRES:
NA.46

biological source

avidin from egg white
enzyme from bovine (calf) intestine

Quality Level

conjugate

alkaline phosphatase conjugate

form

buffered aqueous solution

technique(s)

direct ELISA: 1:70,000
western blot: 1:150,000-1:300,000 using using β-actin in total cell extract of HeLa cells (5-10 μg per lane

shipped in

wet ice

storage temp.

2-8°C

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General description

Avidin is homotetrameric protein (66 kDa) obtained from egg whites and binds strongly to biotin. It has four identical subunits of 16,400 Daltons each. It is an attractive adaptor protein, that is resistant to denaturation. This glycoprotein is present in avian, reptilian and amphibian egg white. The product is affinity purified egg white avidin (acitivity 10-15 units/mg protein) conjugated to alkaline phosphatase using a 0.2% glutaraldehyde method.
Avidin-biotin association has been utilized in immunoassays to detect the localization of antigens in tissues. The use of avidin-biotin immunoassay enhances the sensitivity of the technique and facilitates the detection of antigens in low quantities.

Application

Avidin-Alkaline Phosphatase has been used for ELISA. The product can also be used for western blot at 1:150,000-1:300,000 dilutions.
Avidin-Alkaline Phosphatase has been used in enzyme-linked immunosorbent assay (ELISA).
Cytokine ELISA Assays were performed using a biotinylated anti-IL-2 antibody and alkaline phosphatase avidin.

Biochem/physiol Actions

Avidin-biotin association has been utilized in immunoassays to detect the localization of antigens in tissues. The use of avidin-biotin immunoassay enhances the sensitivity of the technique and facilitates the detection of antigens in low quantities. Avidin is a fatty acid biosynthesis regulator. It participates in terminal cell differentiation by weakening the multiplication of cell without affecting the differentiation process.

Physical form

Solution in 0.05 M Tris buffer, pH 8.0, containing 1% bovine serum albumin, 1 mM MgCl2 and 15 mM sodium azide.

Preparation Note

Affinity purified protein conjugated to alkaline phosphatase using 0.2% glutaraldehyde.

Disclaimer

Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

Storage Class Code

10 - Combustible liquids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Alana M Thackray et al.
The Biochemical journal, 381(Pt 1), 221-229 (2004-04-09)
The distribution of prion infectivity and PrPSc between peripheral lymphoid tissues suggests their possible haematogenic spread during the progression of natural scrapie in susceptible sheep. Since ovine PBMCs (peripheral blood mononuclear cells) express PrPC, they have the potential to carry
Ana Maria Marassá et al.
Revista da Sociedade Brasileira de Medicina Tropical, 39(2), 183-186 (2006-05-16)
Lutzomyia longipalpis and Lutzomyia almerioi, phlebotomine species from the fauna of Serra da Bodoquena, in the State of Mato Grosso do Sul, Brazil, have been studied, particularly due to the fact of their abundance and occurrence, the Guaicurus settlement, focus
A S MacDonald et al.
Journal of immunology (Baltimore, Md. : 1950), 160(3), 1304-1312 (1998-05-07)
Loss of T lymphocyte proliferation and the emergence of a host response that is dominated by a Th2-type profile are well-established features of human filariasis. We have previously reported that adherent peritoneal exudate cells (PEC) from mice transplanted with adult
Observations on the feeding habits of Lutzomyia longipalpis (Lutz \& Neiva, 1912)(Diptera: Psychodidae: Phlebotominae) in Campo Grande, an endemic area of visceral leishmaniasis in Mato Grosso do Sul, Brazil
de Oliveira AG, et al.
Acta Tropica, 107(3), 238-241 (2008)
Cell-specific siRNA delivery by peptides and antibodies
Methods in Enzymology, 502, 91-122 (2012)

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