1LKX:
reference: Crystal structure of the motor domain of a class-I myosin., Kollmar M, Durrwang U, Kliche W, Manstein DJ, Kull FJ, EMBO J 2002 Jun 3;21(11):2517-25. PMID: 12032065

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