1.17.1.10	formate dehydrogenase (NADP+)	reductive acetyl coenzyme A pathway I (homoacetogenic bacteria)	-	-	CODH-PWY	
1.2.7.4	anaerobic carbon-monoxide dehydrogenase	reductive acetyl coenzyme A pathway I (homoacetogenic bacteria)	-	-	CODH-PWY	
1.5.1.5	methylenetetrahydrofolate dehydrogenase (NADP+)	reductive acetyl coenzyme A pathway I (homoacetogenic bacteria)	-	-	CODH-PWY	
1.5.1.54	methylenetetrahydrofolate reductase (NADH)	reductive acetyl coenzyme A pathway I (homoacetogenic bacteria)	-	-	CODH-PWY	
1.5.7.1	methylenetetrahydrofolate reductase (ferredoxin)	reductive acetyl coenzyme A pathway I (homoacetogenic bacteria)	-	-	CODH-PWY	
2.1.1.258	5-methyltetrahydrofolate:corrinoid/iron-sulfur protein Co-methyltransferase	reductive acetyl coenzyme A pathway I (homoacetogenic bacteria)	-	-	CODH-PWY	
2.3.1.169	CO-methylating acetyl-CoA synthase	reductive acetyl coenzyme A pathway I (homoacetogenic bacteria)	-	-	CODH-PWY	
3.5.4.9	methenyltetrahydrofolate cyclohydrolase	reductive acetyl coenzyme A pathway I (homoacetogenic bacteria)	-	-	CODH-PWY	
6.3.4.3	formate-tetrahydrofolate ligase	reductive acetyl coenzyme A pathway I (homoacetogenic bacteria)	-	-	CODH-PWY