5NPS:
reference: Thio-Linked UDP-Peptide Conjugates as O-GlcNAc Transferase Inhibitors., Rafie K, Gorelik A, Trapannone R, Borodkin VS, van Aalten DMF, Bioconjug Chem. 2018 May 10. doi: 10.1021/acs.bioconjchem.8b00194. PMID: 29723473

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