2V1Z:
reference: Engineering an Allosteric Binding Site for Aminoglycosides into TEM1-beta-Lactamase., Volkov AN, Barrios H, Mathonet P, Evrard C, Ubbink M, Declercq JP, Soumillion P, Fastrez J, Chembiochem. 2011 Apr 11;12(6):904-13. doi: 10.1002/cbic.201000568. Epub, 2011 Mar 18. PMID: 21425229

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