5N8Q:
reference: Structural Evidence for the Dopamine-First Mechanism of Norcoclaurine Synthase., Lichman BR, Sula A, Pesnot T, Hailes HC, Ward JM, Keep NH, Biochemistry. 2017 Sep 20. doi: 10.1021/acs.biochem.7b00769. PMID: 28915025

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