3PG8:
reference: Tyrosine latching of a regulatory gate affords allosteric control of aromatic amino acid biosynthesis., Cross PJ, Dobson RC, Patchett ML, Parker EJ, J Biol Chem. 2011 Mar 25;286(12):10216-24. Epub 2011 Jan 30. PMID: 21282100

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