5DPF:
reference: Thermodynamics of protein-ligand interactions as a reference for computational analysis: how to assess accuracy, reliability and relevance of experimental data., Krimmer SG, Klebe G, J Comput Aided Mol Des. 2015 Sep;29(9):867-83. doi: 10.1007/s10822-015-9867-y., Epub 2015 Sep 16. PMID: 26376645

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