5FSR:
reference: The Redundancy of Peptidoglycan Carboxypeptidases Ensures Robust Cell Shape Maintenance in Escherichia coli., Peters K, Kannan S, Rao VA, Biboy J, Vollmer D, Erickson SW, Lewis RJ, Young KD, Vollmer W, MBio. 2016 Jun 21;7(3). pii: e00819-16. doi: 10.1128/mBio.00819-16. PMID: 27329754

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