1BQB:
reference: Amino-acid sequence and three-dimensional structure of the Staphylococcus aureus metalloproteinase at 1.72 A resolution., Banbula A, Potempa J, Travis J, Fernandez-Catalan C, Mann K, Huber R, Bode W, Medrano F, Structure 1998 Sep 15;6(9):1185-93. PMID: 9753696

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