1.14.13.81	Fe2+	a ferritin-like, diiron-carboxylate protein, ion ions have a catalytic function in the enzyme	744039	
1.14.13.81	Fe2+	required	765584	
1.14.13.81	Fe2+	required, presence of a diiron cluster in AcsF	765462	
1.14.13.81	Fe2+	required, the aerobic cyclase belongs to the family of diiron carboxylate-bridged proteins characterized by the iron-binding motif E-Xn-E-X-X-H-Xn-E-Xn-E-X-X-H	765638	
1.14.13.81	Fe2+	requirement	636329	
1.14.13.81	FeSO4	when added with 1,10-phenanthroline	636329	
1.14.13.81	Mg2+	required	676645, 676791, 687758, 689645, 765638