Pierce™ Recombinant Protein G

Supplier: Paul Schöndorf Metallwaren GmbH
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21193 77675 77676
PI21193EA 266.95 USD
PI21193 PI77675 PI77676
Pierce™ Recombinant Protein G
Proteins and Peptides

Purified (unconjugated) Thermo Scientific Pierce™ Recombinant Protein G is useful as the basis for preparing various kinds of probes or affinity media for detection or purification of rabbit and human antibodies, especially IgG isotypes, in immunoassays and antibody purification protocols.


  • Contains two Fc-binding domains per protein
  • Does not bind human IgM, IgD or IgA
  • More efficient than protein A for mouse (IgG1), human (IgG3) and rat, goat and cow antibodies
  • Less efficient than protein A for guinea pig, pig, dog and cat


Protein G is a bacterial cell wall protein isolated from group G Streptococci. DNA sequencing of native protein G identifies two IgG-binding domains and sites for albumin and cell surface binding. The albumin and cell surface binding domains have been eliminated from recombinant protein G to reduce non specific binding and, therefore, can be used to separate IgG from crude samples. Optimal binding occurs at pH 5, although binding is also effective at pH 7.0 to 7.2.


Properties of Recombinant Protein G:
Source: E. coli
Molecular Weight:


21,600 (Apparent MW by SDS-PAGE: 32,000)
Form: salt-free powder
A280 of 0.1% solution: 1.0
Isoelectric point (pI): 4.5


Caution: For Research Use Only. Not for use in diagnostic procedures.

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