| 1PGA: reference: Two crystal structures of the B1 immunoglobulin-binding domain of streptococcal protein G and comparison with NMR., Gallagher T, Alexander P, Bryan P, Gilliland GL, Biochemistry 1994 Apr 19;33(15):4721-9. PMID: 8161530 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).