3WC4:
reference: Crystal structure of UDP-glucose:anthocyanidin 3-O-glucosyltransferase from Clitoria ternatea., Hiromoto T, Honjo E, Tamada T, Noda N, Kazuma K, Suzuki M, Kuroki R, J Synchrotron Radiat. 2013 Nov;20(Pt 6):894-8. doi: 10.1107/S0909049513020712., Epub 2013 Sep 29. PMID: 24121335

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