6EEV:
reference: New Crystallographic Snapshots of Large Domain Movements in Bacterial 3-Hydroxy-3-methylglutaryl Coenzyme A Reductase., Ragwan ER, Arai E, Kung Y, Biochemistry. 2018 Sep 19. doi: 10.1021/acs.biochem.8b00869. PMID: 30199631

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