4PA0:
reference: Structural basis for drug-induced allosteric changes to human beta-cardiac myosin motor activity., Winkelmann DA, Forgacs E, Miller MT, Stock AM, Nat Commun. 2015 Aug 6;6:7974. doi: 10.1038/ncomms8974. PMID: 26246073

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