1PIO:
reference: An engineered Staphylococcus aureus PC1 beta-lactamase that hydrolyses third-generation cephalosporins., Zawadzke LE, Smith TJ, Herzberg O, Protein Eng 1995 Dec;8(12):1275-85. PMID: 8869640

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