3E47:
reference: Inhibitor-binding mode of homobelactosin C to proteasomes: new insights into class I MHC ligand generation., Groll M, Larionov OV, Huber R, de Meijere A, Proc Natl Acad Sci U S A. 2006 Mar 21;103(12):4576-9. Epub 2006 Mar 13. PMID: 16537370

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