5VHT:
reference: Generation of an Orthogonal Protein-Protein Interface with a Noncanonical Amino Acid., Koh M, Nasertorabi F, Han GW, Stevens RC, Schultz PG, J Am Chem Soc. 2017 Apr 26;139(16):5728-5731. doi: 10.1021/jacs.7b02273. Epub, 2017 Apr 17. PMID: 28413876

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