3UBC:
reference: Oxygen-bound Hell's gate globin I by classical versus LB nanotemplate method., Pechkova E, Scudieri D, Belmonte L, Nicolini C, J Cell Biochem. 2012 Mar 13. doi: 10.1002/jcb.24131. PMID: 22415930

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