3UHC:
reference: Cooperative macromolecular device revealed by meta-analysis of static and time-resolved structures., Ren Z, Srajer V, Knapp JE, Royer WE Jr, Proc Natl Acad Sci U S A. 2011 Dec 14. PMID: 22171006

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