Sequence Cluster id id2 desc organism isHeteromeric 1 Cluster1 BRENDA::D2RIQ2 butanoyl-CoA dehydrogenase (NAD+, ferredoxin) (subunit 3/3) (EC 1.3.1.109) Acidaminococcus fermentans heteromer 2 Cluster1 BRENDA::Q18AQ6 butanoyl-CoA dehydrogenase (NAD+, ferredoxin) (subunit 2/3) (EC 1.3.1.109) Clostridioides difficile heteromer