2.5.1.104	N1-aminopropylagmatine synthase	spermidine biosynthesis III	-	
3.5.3.24	N1-aminopropylagmatine ureohydrolase	spermidine biosynthesis III	-	
4.1.1.19	arginine decarboxylase	spermidine biosynthesis III	-	
4.1.1.50	adenosylmethionine decarboxylase	spermidine biosynthesis III	-