Reaction catalyzed by DNA-formamidopyrimidine glycosylase (3.2.2.23)

	DNA containing formamidopyrimidine-guanine residues	+		H2O	=			+
	DNA containing formamidopyrimidine-guanine residues	+		H2O	=		4,6-diamino-5-formamidopyrimidine	+		DNA