4.99.1.4	Biosynthesis of secondary metabolites	-	01110	-	
4.99.1.4	heme metabolism	heme metabolism	-	-	
4.99.1.4	Metabolic pathways	-	01100	-	
4.99.1.4	Porphyrin and chlorophyll metabolism	-	00860	-	
4.99.1.4	siroheme biosynthesis	-	-	PWY-5194