Status Description Organism Genes References
fumarate reductase flavoprotein subunit Siccibacter turicensis frdA
fumarate reductase subunit D Chromobacterium violaceum frdD
fumarate reductase subunit C Chromobacterium violaceum frdC
fumarate reductase flavoprotein subunit Desulfovibrio vulgaris GHS0-128
fumarate reductase flavoprotein subunit Desulfovibrio vulgaris fdrA
fumarate reductase flavoprotein subunit Enterococcus durans G10WH-1899
fumarate reductase flavoprotein subunit Enterococcus hirae GLCW-232
succinate dehydrogenase cytochrome B subunit, b558 family Fibrobacter succinogenes frdC
succinate dehydrogenase or fumarate reductase, flavoprotein subunit Fibrobacter succinogenes fdrA
succinate dehydrogenase and fumarate reductase iron-sulfur protein Fibrobacter succinogenes fdrB