4Z0Z:
reference: Aurone synthase is a catechol oxidase with hydroxylase activity and provides insights into the mechanism of plant polyphenol oxidases., Molitor C, Mauracher SG, Rompel A, Proc Natl Acad Sci U S A. 2016 Mar 29;113(13):E1806-15. doi:, 10.1073/pnas.1523575113. Epub 2016 Mar 14. PMID: 26976571

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