5TQM:
reference: Structural and Biochemical Characterization of Cinnamoyl-CoA Reductases., Sattler SA, Walker AM, Vermerris W, Sattler SE, Kang C, Plant Physiol. 2017 Feb;173(2):1031-1044. doi: 10.1104/pp.16.01671. Epub 2016 Dec, 12. PMID: 27956488

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