2.8.1.6	Ca2+	enhances activity	645589	
2.8.1.6	Fe2+	enhances activity	645589, 645605	
2.8.1.6	Fe2+	highly stimulates	645610	
2.8.1.6	Fe2+	required	645585	
2.8.1.6	FeCl3	-	645587, 645595	
2.8.1.6	FeCl3	binds 1 [Fe4-S4] cluster per monomer	645615	
2.8.1.6	FeCl3	enhances activity 3-4fold at 0.1 mM	645587	
2.8.1.6	FeCl3	required for formation of mixed [Fe-S] cluster state	645613	
2.8.1.6	FeCl3	sulfur of the iron-sulfur cluster is provided by cysteine desulfurase EC 2.8.1.7	645614, 645615	
2.8.1.6	Iron	1 [2Fe-2S] and 1 [4Fe-4S] cluster per monomer are essential for optimal activity	645595