3KKI:
reference: The Vibrio cholerae quorum-sensing autoinducer CAI-1: analysis of the biosynthetic enzyme CqsA., Kelly RC, Bolitho ME, Higgins DA, Lu W, Ng WL, Jeffrey PD, Rabinowitz JD, Semmelhack MF, Hughson FM, Bassler BL, Nat Chem Biol. 2009 Dec;5(12):891-5. Epub 2009 Oct 18. PMID: 19838203

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