2R5V:
reference: Two roads diverged: the structure of hydroxymandelate synthase from Amycolatopsis orientalis in complex with 4-hydroxymandelate., Brownlee J, He P, Moran GR, Harrison DH, Biochemistry. 2008 Feb 19;47(7):2002-13. Epub 2008 Jan 24. PMID: 18215022

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