coenzyme F420 hydrogenase
coenzyme-M-7-mercaptoheptanoylthreonine-phosphate-heterodisulfide hydrogenase
deleted, this was a system comprising two enzymes and not a single enzyme, as was thought
hydrogen:quinone oxidoreductase
N5,N10-methenyltetrahydromethanopterin hydrogenase
3,4-dihydroxyquinoline 2,4-dioxygenase