3QWD:
reference: A Conformational Switch Underlies ClpP Protease Function., Geiger SR, Bottcher T, Sieber SA, Cramer P, Angew Chem Int Ed Engl. 2011 May 4. doi: 10.1002/anie.201100666. PMID: 21544912

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