succinate dehydrogenase (ubiquinone)

succinic dehydrogenase

complex II

menaquinol: fumarate oxidoreductase

fumarate reductase complex (i.e. FRD, involved in anaerobic respiration, repressed in aerobic respiration)

succinate dehydrogenase complex (i. e. SDH, involved in aerobic respiration, repressed in anaerobic respiration)

1.3.5.1