1DOR:
reference: The crystal structure of the flavin containing enzyme dihydroorotate dehydrogenase A from Lactococcus lactis., Rowland P, Nielsen FS, Jensen KF, Larsen S, Structure 1997 Feb 15;5(2):239-52. PMID: 9032071

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