1Y3X:
reference: A simple protocol to estimate differences in protein binding affinity for enantiomers without prior resolution of racemates., Fokkens J, Klebe G, Angew Chem Int Ed Engl. 2006 Jan 30;45(6):985-9. PMID: 16374786

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