1.12.98.1	coenzyme F420 hydrogenase	-	
1.12.98.2	5,10-methenyltetrahydromethanopterin hydrogenase	-	
1.12.98.3	Methanosarcina-phenazine hydrogenase	-	
1.12.98.4	sulfhydrogenase	-	
1.12.98.B1	hydrogen:sulfur oxidoreductase	preliminary BRENDA-supplied EC number