2ZC7:
reference: Structure of the plasmid-mediated class C beta-lactamase ACT-1., Shimizu-Ibuka A, Bauvois C, Sakai H, Galleni M, Acta Crystallogr Sect F Struct Biol Cryst Commun. 2008 May 1;64(Pt, 5):334-7. Epub 2008 Apr 5. PMID: 18453698

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