4XP7:
reference: From bacterial to human dihydrouridine synthase: automated structure determination., Whelan F, Jenkins HT, Griffiths SC, Byrne RT, Dodson EJ, Antson AA, Acta Crystallogr D Biol Crystallogr. 2015 Jul 1;71(Pt 7):1564-71. doi:, 10.1107/S1399004715009220. Epub 2015 Jun 30. PMID: 26143927

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