2VBD:
reference: The crystal structure of an LLL-configured depsipeptide substrate analogue bound to isopenicillin N synthase., Ge W, Clifton IJ, Stok JE, Adlington RM, Baldwin JE, Rutledge PJ, Org Biomol Chem. 2010 Jan 7;8(1):122-7. doi: 10.1039/b910170e. Epub 2009 Oct 29. PMID: 20024142

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