6MV3:
reference: Structural Changes Induced by the Binding of the Calcium Desensitizer W7 to Cardiac Troponin., Cai F, Hwang PM, Sykes BD, Biochemistry. 2018 Nov 6. doi: 10.1021/acs.biochem.8b00882. PMID: 30376637

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