3W8K:
reference: Crystal structure of Mox-1, a unique plasmid-mediated class C beta-lactamase with hydrolytic activity towards moxalactam., Oguri T, Furuyama T, Okuno T, Ishii Y, Tateda K, Bonomo RA, Shimizu-Ibuka A, Antimicrob Agents Chemother. 2014 Jul;58(7):3914-20. doi: 10.1128/AAC.02363-13., Epub 2014 Apr 28. PMID: 24777102

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