5CCC:
reference: Cofactor-Mediated Conformational Dynamics Promote Product Release From Escherichia coli Dihydrofolate Reductase via an Allosteric Pathway., Oyen D, Fenwick RB, Stanfield RL, Dyson HJ, Wright PE, J Am Chem Soc. 2015 Jul 29;137(29):9459-68. doi: 10.1021/jacs.5b05707. Epub 2015 , Jul 14. PMID: 26147643

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