The Third IgG-Binding Domain from Streptococcal Protein G

Protein G is a ceJl surface sociated protein from StreptooocC1 且也 at binds to IgG with highaffinity. We have determined the X-ray ~rys 也 al structures of the lird IgG-binding domain(domain 111) alone 盹&陀 solution of Ú Å-(final R-factor of1 9.3%), andin complex with anFab fragment to 2.6 Ä (final R- ctor of16.8%)...