1HLU:
reference: The structure of an open state of beta-actin at 2.65 A resolution., Chik JK, Lindberg U, Schutt CE, J Mol Biol 1996 Nov 8;263(4):607-23. PMID: 8918942

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