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Protein A/G Sepharose Bead

IP, Purif Protein A,Protein G Sepharose beads 90 µm
Pubmed (3)
Catalog No. ABIN412444
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  • Target
    Protein A/G
    Immunoprecipitation (IP), Purification (Purif)
    Protein A/G Sepharose can be used for purification of monoclonal and polyclonal antibodies.
    Protein A/G Sepharose is prepared by covalently coupling recombinant Protein A/G (contains five Ig-binding regions of protein A and three Ig-binding regions of protein G, ABIN412503) to 6 % cross-linked sepharose beads. The coupling was optimized to give a high binding capacity for IgG. The capacity of IgG binding could be greater than 10 mg of human IgG per mL of wet gel.
    Bead Ligand
    Protein A,Protein G
    Bead Matrix
    Sepharose beads
    Bead Size
    90 µm
  • Comment

    Binding capacity greater than 20 mg/ml of wet gel
    High flow rate
    Low falling off of rProtein A/G
    pH stability 2-10.

    Reagent Preparation

    Binding buffer: 0.05 M sodium borate, 0.15 M sodium chloride pH 8.0
    Elution buffer: 0.1 M citric acid, pH 2.75

    Assay Procedure

    Procedure Example:
    1. Wash column with ddH2O to remove air bubbles.
    2. Fill column with protein A/G beads.
    3. Wash the column with 5X volume of Binding Buffer.
    4. Dilute serum sample with Binding Buffer (1:1 ratio).
    5. Invert the diluted serum sample to mix well. Make sure no bubbles in the solution.
    6. Pour the solution onto the column.
    7. Collect the solution and repeat step 6 & 7 for 10 times.
    8. Wash the column 4 – 5 times with Binding Buffer containing 0.5 M NaCl
    9. Wash the column 4 - 5 times with the Binding Buffer.
    10. Add Elution Buffer to elute IgG (0.5-1 ml each time).
    11. Collect the eluent using microcentrifuge tube.
    12. Assay protein concentration and combine the fractions containing sufficient amount of IgG.
    13. To regenerate/store column:
    a. Wash with 3 volumes of elution buffer.
    b. Wash with 3 volumes of distilled water.
    c. Store column in 20 % Ethanol/H2O.

    For Research Use only
  • Format
    Supplied as 50% slurry in 20 % Ethanol/H2O. >1.5mg Protein A/G per ml Sepharose beads
    Handling Advice
    Do not freeze!
    4 °C
    Expiry Date
    12 months
  • Zhou, Chen, Arora, Hyams, Kozlowski: "Complement C1 esterase inhibitor levels linked to infections and contaminated heparin-associated adverse events." in: PLoS ONE, Vol. 7, Issue 4, pp. e34978, 2012 (PubMed).

    Kundakovic, Chen, Guidotti, Grayson: "The reelin and GAD67 promoters are activated by epigenetic drugs that facilitate the disruption of local repressor complexes." in: Molecular pharmacology, Vol. 75, Issue 2, pp. 342-54, 2009 (PubMed).

    Dong, Nelson, Grayson, Costa, Guidotti: "Clozapine and sulpiride but not haloperidol or olanzapine activate brain DNA demethylation." in: Proceedings of the National Academy of Sciences of the United States of America, Vol. 105, Issue 36, pp. 13614-9, 2008 (PubMed).

  • Target
    Protein A/G
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