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Protein A (ProA, Staphylococcus A Protein) (Biotin)

Cat no: 168448


Supplier: United States Biological
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Protein A is a surface protein (approximately 56kD in size) originally discovered within the cell wall of Staphylococcus aureus. While important for bacterial survival, Protein A has beneficial uses in immunology for its high affinity binding to immunoglobulins (especially the IgG isotype). This high affinity property makes Protein A essential in the large scale purification. Source: This product was prepared from chromatographically pure Protein A. Assay by immunoelectrophoresis resulted in a single precipitin arc against anti-biotin and anti-Protein A. Applications: Suitable for use in ELISA, Western Blot and Immunohistochemistry. Other applications not tested. Recommended Dilution: ELISA: 1:20,000-1:200,000 Western Blot: 1:10,000-1:40,000 Immunohistochemistry: 1:1000-1:5000 Optimal dilutions to be determined by the researcher. Storage and Stability: Lyophilized powder may be stored at -20 degrees C. Stable for 12 months at -20 degrees C. Reconstitute with sterile buffer or dH2O. Aliquot to avoid repeated freezing and thawing. Store at -20 degrees C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
Catalogue number: 168448
Applications: ELISA, Immunohistochemistry, Western Blot
Conjugates: Biotin
Size: 500ug
Form: Supplied as a lyophilized powder in PBS, 0.02M potassium phosphate, 0.15M sodium chloride, pH 7.2, 0.01% sodium azide, 10mg/ml BSA. Reconstitute with sterile dH2O or PBS. Labeled with Biotin.
Purity: Purified by Protein A affinity chromatography.

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