5N6A:
reference: Mechanistic and structural basis for activation of cardiac myosin force production by omecamtiv mecarbil., Planelles-Herrero VJ, Hartman JJ, Robert-Paganin J, Malik FI, Houdusse A, Nat Commun. 2017 Aug 4;8(1):190. doi: 10.1038/s41467-017-00176-5. PMID: 28775348

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