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Key Documents

P8651

Sigma-Aldrich

Protein A–Peroxidase from Staphylococcus aureus/horseradish

lyophilized powder

Synonym(s):

Peroxidase–Protein A

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About This Item

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

conjugate

peroxidase conjugate

Quality Level

100
200

form

lyophilized powder

technique(s)

direct ELISA: 1:80,000 using human IgG

storage temp.

−20°C

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General description

Protein A is a cell wall constituent of Staphylococcus aureus, with a molecular weight of 56kDa. It possesses five binding domains which interact with heavy chains of immunoglobulins at the Fc or Fab fragment. In response to protein A, the complement system, interferon production, hypersensitivity reactions and cell-mediated cytotoxicity get activated. Horseradish peroxidase is a heme-containing enzyme. In the presence of hydrogen peroxide, the enzyme catalyzes the oxidation of luminol.

Specificity

Binds IgG only from most mammals, except rat, goat, sheep.

Application

Protein A–Peroxidase from Staphylococcus aureus/horseradish has been used in enzyme-linked immunosorbent assay (ELISA).

Packaging

Package size based on protein content.

Physical form

Lyophilized powder containing sodium citrate buffer salt. Protein determined by A205.

Preparation Note

Protein A, extracellular, coupled to Peroxidase, Type VI, by a modification of the procedure of O′Sullivan, M.J., et al., FEBS Lett., 95, 311 (1978), which favors low molecular weight conjugates.

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

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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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