4.99.1.4	sirohydrochlorin + Fe2+	-	
4.99.1.4	sirohydrochlorin + Fe2+	CysG, siroheme biosynthesis	
4.99.1.4	sirohydrochlorin + Fe2+	Met8p catalyzes ferrochelation during the biosynthesis of siroheme	
4.99.1.4	sirohydrochlorin + Fe2+	Met8p catalyzes the final two steps in the biosynthesis of siroheme involving a beta-NAD+-dependent dehydrogenation of precorrin-2 to generate sirohydrochlorin followed by ferrochelation to yield siroheme	
4.99.1.4	sirohydrochlorin + Fe2+	SirB is responsible for the final step in siroheme synthesis