2.1.2.4	485762	A tetrahydro-folic acid linked formimino transfer enzyme	Clostridium acidi-urici	
2.1.2.4	485761	Formation, isolation and properties of 5-formiminotetrahydrofolic acid	Clostridium cylindrosporum	
2.1.2.4	34311	Formimino-tetrahydrofolic acid and methenyltetrahydrofolic acid as intermediates in the formation of N10-formyltetrahydrofolic acid	Clostridium cylindrosporum