2R3V:
reference: Biochemical and structural basis for feedback inhibition of mevalonate kinase and isoprenoid metabolism., Fu Z, Voynova NE, Herdendorf TJ, Miziorko HM, Kim JJ, Biochemistry. 2008 Mar 25;47(12):3715-24. Epub 2008 Feb 27. PMID: 18302342

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