1.2.99.6	carboxylate reductase	Clostridium formicaceticum	
1.3.1.6	fumarate reductase (NADH)	Clostridium formicaceticum	
1.5.1.15	methylenetetrahydrofolate dehydrogenase (NAD+)	Clostridium formicaceticum	
1.5.1.20	methylenetetrahydrofolate reductase [NAD(P)H]	Clostridium formicaceticum	
1.5.7.1	methylenetetrahydrofolate reductase (ferredoxin)	Clostridium formicaceticum	
2.3.3.13	2-isopropylmalate synthase	Clostridium formicaceticum	
3.5.4.9	methenyltetrahydrofolate cyclohydrolase	Clostridium formicaceticum	
6.3.4.3	formate-tetrahydrofolate ligase	Clostridium formicaceticum