4WHM:
reference: Structural basis for acceptor-substrate recognition of UDP-glucose: Anthocyanidin 3-O-glucosyltransferase from Clitoria ternatea., Hiromoto T, Honjo E, Tamada T, Noda N, Kazuma K, Suzuki M, Blaber M, Kuroki R, Protein Sci. 2014 Dec 30. doi: 10.1002/pro.2630. PMID: 25556637

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