Reaction catalyzed by phosphoribosylaminoimidazolecarboxamide formyltransferase (2.1.2.3)

		+			=			+
	N10-formyltetrahydropteroylmonoglutamate	+		5'-phosphoribosyl-5-formamino-4-imidazole carboxamide ribonucleotide	=		tetrahydropteroylmonoglutamate	+		5'-phosphoribosyl-5-formamido-4-imidazole carboxamide ribonucleotide