• Product name

  • Expression system

  • Protein length

    Full length protein
  • Animal free

  • Nature

  • Conjugation

    FITC. Ex: 493nm, Em: 528nm


Our Abpromise guarantee covers the use of ab7459 in the following tested applications.

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

  • Applications

    Flow Cytometry


  • Form

  • Additional notes

    Molecular Weight (protein G): 33,000 daltons Extinction Coefficient: 1% at 280 nm is 9.5(E0.1% of 9.5)
  • 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.

    pH: 7.20
    Preservative: 0.01% Sodium azide
    Constituents: 0.42% Potassium phosphate, 0.87% Sodium chloride, 1% BSA

  • Reconstitution
    Reconstitute product with 0.5 ml of deionized water (or equivalent).

General Info

  • Alternative names

    • IgG binding protein G
    • IgG-binding protein G
    • Immunoglobulin G binding protein G [Precursor]
    • spg
    • spg immunoglobulin G-binding protein
    • SPG2_STRSG
    see all
  • Relevance

    Protein G is a bacterial protein derived from the cell wall of certain strains of b-hemolytic Streptococcci. It binds with high affinity to the Fc portion of various classes and subclasses of immunoglobulins from a variety of species. Protein G binds to all IgG subclasses from human, mouse and rat species. It also binds to total IgG from guinea pig, rabbit, goat, cow, sheep, and horse. Protein G binds preferentially to the Fc portion of IgG, but can also bind to the Fab region, making it useful for purification of F(ab') fragments of IgG. Due to it's affinity for the Fc region of many mammalian immunoglobulins, protein G is considered a universal reagent in biochemistry and immunology.
  • Cellular localization

    Cell Wall and Secreted


This product has been referenced in:

  • He B  et al. Group A Rotaviruses in Chinese Bats: Genetic Composition, Serology, and Evidence for Bat-to-Human Transmission and Reassortment. J Virol 91:N/A (2017). IF . Read more (PubMed: 28381569) »
See 1 Publication for this product

Customer reviews and Q&As

1-3 of 3 Abreviews or Q&A


I can confirm that the Protein G protein (FITC) ab7459, should be reconstituted in 500 µl of deionized water. This provides a 0.5 mg/ml solution of the protein in a buffer of 0.02M Potassium Phosphate, 0.15M NaCl, 0.01% Sodium Azide, pH7.2. This also contains 10 mg/mL Bovine Serum Albumin as a stabilizer.

Read More


Thank you very much for having patience.

My colleague has tried to source these products form our collaborator supplier however due to non availability of these product we are unable to add these in catalogue.

You can however use the following kits to conjugate the protein yourselves. Please check the following products

ab102851, ab102849, ab102850, ab102848

ab102912, ab102870

Please click the below given link for full list;

We unfortunately do not have recombinant anti human IgG1 antibody available.

I hope this information will be helpful. Should you have any question please do not hesitate to contact me.

Read More


Thank you for contacting us.

I can confirm that I have forwarded your inquiry to my colleague, who is protein product manager at Abcam. She is now looking into the requested product line and will be contacting me with updates soon.

I will get back to you, as soon as I get a reply from her.

Thank you very much for having patience!

Read More

For licensing inquiries, please contact

Sign up