85-2067-47　Protein G, Recombinant (Agarose) 2ml　209159

特徴

• Protein A is a cell wall protein deriving from Staphylococcus aureus which exhibits unique binding properties for IgG from a variety of mammalian species and for some IgM and IgA as well. It binds with the Fc region of immunoglobulins through interaction with the heavy chain. It couples to a wide variety of reporter molecules including fluorescent dyes, enzyme markers, biotin, colloidal gold and radioactive iodine without affecting the antibody binding site. Recombinant Protein A was developed to increase the specificity of the molecule for IgG and is widely used both in research and bioprocessing.
• Protein G is a bacterial cell wall protein isolated from group G Streptococci. Native Protein G contains two IgG-binding domains and sites for albumin and cell surface binding. The albumin and cell surface binding domains have been eliminated from purified Recombinant Protein G to reduce nonspecific binding and, therefore, can be used to separate IgG from crude samples. Optimal binding occurs at pH 5, although binding is also good at pH 7.0-7.2. Protein G has greater affinity than Protein A for most mammalian IgGs, it may be used for the purification of mammalian IgGs that do not bind well to Protein A. Protein G does not bind to human IgM, IgD and IgA.
• Source:Recombinant protein corresponding to Protein-A and Protein G, coupled to agarose using a unique immobilization chemistry that retains the maximum IgG-binding capacity and minimum Protein-A leaching (~5ng protein/ml).
• Applications:Suitable for use in Immunoprecipitation. Other applications not tested.
• Recommended Dilution:Immunoprecipitation: 20-50ul suspensionOptimal dilutions to be determined by the researcher.
• Specificity:Protein G-agarose is suitable for IP of mouse IgG1, IgG2a, IgG2b and IgG3; rat IgG1, IgG2a, IgG2b and IgG2c; rabbit and goat polyclonal Abs; human IgG1, IgG2, IgG3 and IgG4.
• Storage and Stability:May be stored at 4°C. For long-term storage, aliquot and store at 4°C. Do not freeze. For maximum recovery of product, centrifuge the original vial prior to removing the cap. Further dilutions can be made in assay buffer.