2.4.2.27	Co2+	as effective as Mg2+	637788	
2.4.2.27	Mg2+	Mn2+ or Mg2+ required, maximal activity with 10 mM Mg2+	637788	
2.4.2.27	Mn2+	Mn2+ or Mg2+ required, maximal activity with 3 mM Mn2+	637788