Protein G Sepharose Fast Flow is recombinant protein G coupled to Sepharose 4 Fast Flow resin.
- High binding capacity: approximately 20mg human IgG per mL resin
- Broad-spectrum: binds to a broad range of IgG species and subclasses
- Complements Protein A resins: unlike protein A, protein G binds all human and mouse IgG subclasses, including human IgG3 and mouse IgG1 as well as all rat IgG subclasses
- No specific albumin binding: recombinant protein G has been genetically engineered to remove the albumin binding region
- Minimal leaching: optimized coupling method minimizes leaching of recombinant protein G and improves binding capacity for IgG
- Wide range of formats: including loose resin packs from 5mL to 5L, for manual or automated antibody purification and immunoprecipitation procedures
IgG purification
Protein G Sepharose 4 Fast Flow is a good first choice for general-purpose capture of antibodies at laboratory scale. Compared to protein A-based resins, it binds a broader range of immunoglobulins from eukaryotic species and more classes of IgG.
Key applications include:
- isolation and purification of IgG from serum, ascites, and tissue culture media
- monoclonal antibody purification
- isolation of antibody-ligand immune complexes
- immunoprecipitation protocols
The recombinant protein G ligand binds strongly to the Fc-region from a variety of mammalian species. In addition, many antibodies also interact via the Fab region with a low affinity site on protein G. The ligand is immobilized via a multipoint coupling to the Sepharose 4 Fast Flow agarose matrix to minimize ligand leakage.
Protein G Sepharose 4 Fast Flow resin is part of Cytiva's BioProcess media (resins) range, which ensures security of supply and comprehensive technical and regulatory support.
This product has met the following criteria to qualify for the following awards: