2.1.3.2	Mg2+	required for synergistic inhibition of the enzyme by CTP and UTP, metal binding site in the allosteric regulatory site of ATCase, overview	718943	
2.1.3.2	additional information	no requirement for any metal ion	485866	
2.1.3.2	Zn2+	-	485881	
2.1.3.2	Zn2+	regulatory subunit contains 6 Zn2+ per 300000 Da protein, Zn2+ may be replaced by Hg2+ or Cd2+	485837	
2.1.3.2	Zn2+	the Zn domain, primarily involved in the binding of the zinc cofactor, of the regulatory chain is classified as rubredoxin-like with a metal (zinc or iron) bound that contains usually two CX(n)C motifs	718458