Fig. 3From: The Warburg effect modulates DHODH role in ferroptosis: a reviewRole of DHODH and complex III in tumor growth. DHODH-catalyzed reaction is the rate-limiting step in de novo pyrimidine nucleotide biosynthesis. It catalyzes the conversion of dihydroorotate to orotate used for nucleic acid biosynthesis. This reaction needs the activity of complex III of the ETC and it involves the conversion of ubiquinol (COQ-e-) to ubiquinone (COQ)Back to article page