• NatureNative
  • SourceNative
  • Amino Acid Sequence
    • Additional sequence informationPrepared from plasma


Our Abpromise guarantee covers the use of ab90285 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

  • Biological activityShown to be non reactive for HbsAG, anti-HCV, anti-HBc, and negative for anti-HIV 1 and 2 by FDA approved tests.
  • Applications


  • Purity> 95 % SDS-PAGE.

  • FormLiquid
  • Additional notes

    Protein Determination: Extinction Coefficient (E) 0.1% at 280nm =1.46.


    The IgG fc fragment does not bind antigen; however, it does contain the classic antigenic determinants and biological activity with respect to cytotrophic reactions, binding of complement and catabolic rate control.


    Shown to be non reactive for HbsAG, anti-HCV, anti-HBc, and negative for anti-HIV 1 and 2 by FDA approved tests.

  • Concentration information loading...

Preparation and Storage

  • Stability and Storage

    Shipped at 4°C. Upon delivery aliquot and store at -20°C. Avoid freeze / thaw cycles.

    Preservative: 0.05% Sodium Azide
    Constituents: 50mM Tris HCl, 200mM Sodium chloride, pH 8.0

General Info

  • RelevanceThe Fc region is the constant region on an immunoglobulin molecule, the area that is exactly the same on all antibodies. The Fc region is found on the heavy chains and is not involved in binding antigens.

References for Native Human IgG FC fragment protein (ab90285)

This product has been referenced in:
  • Kusuda T  et al. Kawasaki disease-specific molecules in the sera are linked to microbe-associated molecular patterns in the biofilms. PLoS One 9:e113054 (2014). Read more (PubMed: 25411968) »
  • DeLelys ME  et al. Relationship between ABO genotype and A antigen expression on platelets. Transfusion 53:1763-71 (2013). Read more (PubMed: 23145947) »

See all 3 Publications for this product

Product Wall

We prepare IgG, FC Fragment from polyclonal IgG.

We do not know the glycosylation status of the IgG FC fragment as we do not test for this as part of our final QC analysis. We do not actively attempt to deglycosylate the FC as part of the purification procedure. I am including a general description o...

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Unfortunately, we do not have information on the structure of the protein.

For the recent batch we sell, ab90285 lot# GR90653 is 2.1 mg/ml.

Thank you for your reply.

I am confident that the reference ab90285 is a suitable negative control for ab108557.
Furthermore, I have just been informed about the price of the new Fc fragments which is $424.00 for 100µg, therefore I w...

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Thank you for contacting us.

The lab let me know that they have not measured the endotoxin levels for this product.
Also, they do not know whether or not it could be used a s a control in cell culture.

However, if you would li...

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Thank you for your reply.

While we don't have an exact figure for how sensitive the immunoelectrophoresis is, we do not believe the protein will contain 1% contamination with F(ab). I hope this helps, please let me know if you need any other ...

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Thank you for contactingus.

This Fc fragment protein shows no reaction to F(ab) on immunoelectrophoresis. We will guarantee this product to be free from F(ab) fragment contamination. Unfortunately, we do not currently have any other purified ...

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