3O9P:
reference: Compensating Stereochemical Changes Allow Murein Tripeptide to Be Accommodated in a Conventional Peptide-binding Protein., Maqbool A, Levdikov VM, Blagova EV, Herve M, Horler RS, Wilkinson AJ, Thomas GH, J Biol Chem. 2011 Sep 9;286(36):31512-21. Epub 2011 Jun 24. PMID: 21705338

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