5LT2:
reference: The structural switch of nucleotide-free kinesin., Cao L, Cantos-Fernandes S, Gigant B, Sci Rep. 2017 Feb 14;7:42558. doi: 10.1038/srep42558. PMID: 28195215

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