2CC1:
reference: Crystal structure of the Mycobacterium fortuitum class A beta-lactamase: structural basis for broad substrate specificity., Sauvage E, Fonze E, Quinting B, Galleni M, Frere JM, Charlier P, Antimicrob Agents Chemother. 2006 Jul;50(7):2516-21. PMID: 16801434

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