Crystal structure of the C2 fragment of streptococcal protein G in complex with the Fc domain of human IgG.
Sauer-Eriksson, A.E., Kleywegt, G.J., Uhlen, M., Jones, T.A.(1995) Structure 3: 265-278
- PubMed: 7788293 
- PubMed Abstract: 
Streptococcal protein G comprises two or three domains that bind to the constant Fc region of most mammalian immunoglobulin Gs (IgGs). Protein G is functionally related to staphylococcal protein A, with which it shares neither sequence nor structural ...