5KVA:
reference: Determination of the structure and catalytic mechanism of Sorghum bicolor caffeoyl-CoA O-methyltransferase., Walker AM, Sattler SA, Regner MR, Jones JP, Ralph J, Vermerris W, Sattler SE, Kang C, Plant Physiol. 2016 Jul 25. pii: pp.00845.2016. PMID: 27457122

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