6.3.2.12	Fe2+	divalent cation requirement is satisfied by Mg2+, Mn2+ or Fe2+	1015	
6.3.2.12	K+	K+ is most effective	1019	
6.3.2.12	K+	Km: 7 mM	1015	
6.3.2.12	K+	maximal activity at 80 mM	1007	
6.3.2.12	K+	monovalent cation required	1010	
6.3.2.12	K+	monovalent cation required, 200 mM K+ is most effective	1008	
6.3.2.12	K+	monovalent cation requirement is satisfied by K+ or NH4+	1007, 1021	
6.3.2.12	K+	monovalent cation requirement is satisfied by K+, Rb+ or NH4+	1010, 1015, 1019	
6.3.2.12	K+	optimal concentration is 50 mM	1015	
6.3.2.12	K+	required	1016	
6.3.2.12	Mg2+	divalent cation required, Mg2+ or Mn2+	1007, 1012	
6.3.2.12	Mg2+	divalent cation requirement is satisfied by Mg2+, Mn2+ or Fe2+	1015	
6.3.2.12	Mg2+	Km: 1.1 mM	1019	
6.3.2.12	Mg2+	maximal activity at 5 mM, inhibition at higher concentration	1015	
6.3.2.12	Mg2+	optimal concentration: 5.0 mM	1012	
6.3.2.12	Mg2+	required	1016, 1021, 726690, 744052	
6.3.2.12	Mn2+	143% as effective as Mg2+	1012	
6.3.2.12	Mn2+	divalent cation required	1007, 1012, 1019	
6.3.2.12	Mn2+	divalent cation requirement is satisfied by Mg2+, Mn2+ or Fe2+	1015	
6.3.2.12	Mn2+	Km: 0.063 mM	1019	
6.3.2.12	Mn2+	optimal concentration: 0.5 mM	1012	
6.3.2.12	NH4+	-	1019	
6.3.2.12	NH4+	monovalent cation required, K+ or NH4+, maximal activity at 20 mM	1007	
6.3.2.12	NH4+	monovalent cation requirement is satisfied by K+, Rb+ or NH4+	1010, 1015	
6.3.2.12	Rb+	maximal activity at 100 mM, Km: 13 mM	1015	
6.3.2.12	Rb+	monovalent cation requirement is satisfied by K+, Rb+ or NH4+	1010, 1015, 1019