3HYE:
reference: Snapshots of the fluorosalinosporamide/20S complex offer mechanistic insights for fine tuning proteasome inhibition., Groll M, McArthur KA, Macherla VR, Manam RR, Potts BC, J Med Chem. 2009 Sep 10;52(17):5420-8. PMID: 19678642

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