6.2.1.1	Ca2+	10 mM, can replace Mg2+ in activation, with 30% of the efficiency relative to Mg2+	553	
6.2.1.1	Ca2+	about 30% of the activation with Mg2+ or Mn2+	671665	
6.2.1.1	Ca2+	about 70% of the activation with Mg2+ or Mn2+, AF-ACS2	671665	
6.2.1.1	Ca2+	can replace Mg2+ in activation, with 50% of the efficiency relative to MgCl2	568	
6.2.1.1	Ca2+	Km for CaCl2 is 1.2 mM	568	
6.2.1.1	Ca2+	two types of divalent metal ion requirement, 1. Mg2+, Mn2+, Fe2+, Co2+ or Ca2+ required for the formation of the enzyme-bound acetyl adenylate, 2. Ni2+, Cd2+, Fe2+ or Cu2+ required for adenylate binding	563	
6.2.1.1	Cd2+	two types of divalent metal ion requirement, 1. Mg2+, Mn2+, Fe2+, Co2+ or Ca2+ required for the formation of the enzyme-bound acetyl adenylate, 2. Ni2+, Cd2+, Fe2+ or Cu2+ required for adenylate binding	563	
6.2.1.1	Co2+	about 70% of the activation with Mg2+ or Mn2+, AF-ACS2	671665	
6.2.1.1	Co2+	about 80% of the activation with Mg2+ or Mn2+	671665	
6.2.1.1	Co2+	can replace Mg2+ in activation, 50% as effective as MgCl2, Km for CoCl2 is 0.2 mM	568