1IGC:
reference: The third IgG-binding domain from streptococcal protein G. An analysis by X-ray crystallography of the structure alone and in a complex with Fab., Derrick JP, Wigley DB, J Mol Biol 1994 Nov 11;243(5):906-18. PMID: 7966308

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).