2P4N:
reference: The beginning of kinesin's force-generating cycle visualized at 9-A resolution., Sindelar CV, Downing KH, J Cell Biol. 2007 May 7;177(3):377-85. Epub 2007 Apr 30. PMID: 17470637

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