6QYI:
reference: Structure and functional characterization of 4-hydroxyphenylacetate 3-hydroxylase from Escherichia coli., Deng Y, Faivre B, Back O, Lombard M, Pecqueur L, Fontecave M, Chembiochem. 2019 Jun 2. doi: 10.1002/cbic.201900277. PMID: 31155821

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