3CVU:
reference: Crystal Structure and Mechanism of a DNA (6-4) Photolyase., Maul MJ, Barends TR, Glas AF, Cryle MJ, Domratcheva T, Schneider S, Schlichting I, Carell T, Angew Chem Int Ed Engl. 2008 Oct 27. PMID: 18956392

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