2YYJ:
reference: Crystal Structure of the Oxygenase Component (HpaB) of the 4-Hydroxyphenylacetate 3-Monooxygenase from Thermus thermophilus HB8., Kim SH, Hisano T, Takeda K, Iwasaki W, Ebihara A, Miki K, J Biol Chem. 2007 Nov 9;282(45):33107-17. Epub 2007 Sep 5. PMID: 17804419

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