I found this statement in my study materials in the section of Staphylococcus
The AG structure:
- protein AG (species specific);
- polysaccharide AG (serotype specific).
I know what is Protein A/G, a recombinant fusion protein that combines IgG binding domains of both Protein A and Protein G.
What is the point of this AG structure thing in the contex of Staphylococcus? Can we say that staphylococcus have AG structure? I think it has properties related to protein A\G and also to polysaccharide A\G. I know very little about polysaccharide A\G and not sure how it is related to serotype specificity in the context of staphylococcus.
Extension to the question
Antigenic structure of Steptococcus pyogenes: the group AG is unique, placing streptococcus in group A.
What is the AG here?