6MPS:
reference: Substrate Preferences Establish the Order of Cell Wall Assembly in Staphylococcus aureus., Schaefer K, Owens TW, Kahne D, Walker S, J Am Chem Soc. 2018 Feb 21;140(7):2442-2445. doi: 10.1021/jacs.7b13551. Epub 2018, Feb 9. PMID: 29402087

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