1.5.1.5	methylenetetrahydrofolate dehydrogenase (NADP+)	formate assimilation into 5,10-methylenetetrahydrofolate	
3.5.4.9	methenyltetrahydrofolate cyclohydrolase	formate assimilation into 5,10-methylenetetrahydrofolate	
6.3.4.3	formate-tetrahydrofolate ligase	formate assimilation into 5,10-methylenetetrahydrofolate