Succinate <=> Fumarate (with FAD redox reaction on enzyme) EC Number: 1.3.5.1 Pubmed16143825 Reactome Database ID Release 4370994 Reactome, http://www.reactome.org ReactomeREACT_1667 The succinate dehydrogenase complex, associated with the inner mitochondrial membrane, catalyzes the dehydrogenation of succinate to fumarate, reducing the FAD cofactor bound to the enzyme. This redox potential is then used in the electron transfer chain to drive a proton motive force to generate ATP.