Question about Protein A purification of IgG

[Christophe Pichon]

aeon a écrit :

> I am a Med.Sci. student who is really desiring the answers to these two
> questions for an upcoming report.
>
> 1. What is the molecular basis for the selective binding of IgG by protein
> A?

It is an affinity chromatography by hydrophobic interaction of antibody Fc and
protein A.


>
> 2. What is the difference between Protein A and Protein G in relation to
> their Ig class binding specificities?

Complexe,often the protein G is used to purifie mouse Ig ( low affinity in
comparaison with other species, eg rabbit, horse, human, rat,) and espacially
Ig G1 ( with hight salt buffer ).

>
>
> Thank you for your response.
>
> Aeon

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