5TG5:
reference: Exploring the potential of boronic acids as inhibitors of OXA-24/40 beta-lactamase., Werner JP, Mitchell JM, Taracila MA, Bonomo RA, Powers RA, Protein Sci. 2016 Dec 20. doi: 10.1002/pro.3100. PMID: 27997706

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