has participant hydrogen acceptor hydrogen donor fumarate(2-) succinate(2-) succinate dehydrogenase activity https://github.com/geneontology/go-ontology/issues/17091 succinodehydrogenase activity succinyl dehydrogenase activity RHEA:16357 fumaric hydrogenase activity GO:0019739 succinic acid dehydrogenase activity succinate oxidoreductase activity fumarate reductase activity molecular_function fumarate dehydrogenase activity Catalysis of the reaction: succinate + acceptor = fumarate + reduced acceptor. succinic dehydrogenase activity GO:0000104 KEGG_REACTION:R00412 oxidoreductase activity, acting on the CH-CH group of donors