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Protein A Agarose Suspension

Protein A Agarose Suspension designed for immunoprecipitation applications


slurry (Liquid)


≤0.1% sodium azide as preservative



storage condition

do not freeze

shipped in

wet ice

storage temp.


General description

Designed for immunoprecipitation applications. This product is blocked with BSA to reduce non-specific binding and cannot be used for purification; best for mouse IgG2a and IgG2b and rabbit IgG.
Protein A conjugated to agarose.


1.5 ml in Plastic ampoule


Toxicity: Standard Handling (A)

Physical form


Other Notes

Agarose solutions are supplied ready-to-use for immunoprecipitation. Use 15 µl suspension/µg primary antibody. Protein A-Agarose is recommended for use in immunoprecipitation assays using rabbit polyclonal antibodies or unmodified mouse IgG2a or IgG2b monoclonal antibodies. Mouse IgG1 or IgG3 and all rat antibodies bind poorly to Protein A. As an alternative, use Protein G PLUS, Protein G PLUS/Protein A, or rabbit second-step antibodies to bridge these antibodies to Protein A. Preclearing will minimize extra bands resulting from nonspecific precipitation. To preclear, add to the sample 20 µl of agarose conjugate and 1 µg of normal IgG from the same species as the immunoprecipitating antibody. When immunoblotting is used for detection, some secondary antibodies can react nonspecifically with BSA or other proteins present at high concentrations in the sample. This can be eliminated by reducing the concentration of secondary antibody.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class Code

11 - Combustible Solids



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

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Certificate of Quality

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