3OIT:
reference: Crystal structure of curcuminoid synthase CUS from Oryza sativa., Miyazono K, Um J, Imai FL, Katsuyama Y, Ohnishi Y, Horinouchi S, Tanokura M, Proteins. 2011 Feb;79(2):669-73. doi: 10.1002/prot.22888. PMID: 21117241

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