5KQJ:
reference: Effect of solvent and protein dynamics in ligand recognition and inhibition of aminoglycoside adenyltransferase 2''-Ia., Bacot-Davis VR, Bassenden AV, Sprules T, Berghuis AM, Protein Sci. 2017 Sep;26(9):1852-1863. doi: 10.1002/pro.3224. Epub 2017 Jul 21. PMID: 28734024

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