3O40:
reference: Broad Distribution of Energetically Important Contacts across an Extended Protein Interface., Johnson LM, Horne WS, Gellman SH, J Am Chem Soc. 2011 Jul 6;133(26):10038-41. Epub 2011 Jun 14. PMID: 21644542

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