5J0C:
reference: Tricking a Protein To Swap Strands., Wang H, Lang L, Logan DT, Danielsson J, Oliveberg M, J Am Chem Soc. 2016 Dec 7;138(48):15571-15579. Epub 2016 Nov 22. PMID: 27783493

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