2.8.2.24	Mg2+	51% activation at 10 mM	643824	
2.8.2.24	Mg2+	slight activation	643825	
2.8.2.24	Mn2+	23% activation at 1 mM, 10 mM inhibits by 53%	643824, 643825	
2.8.2.24	additional information	no absolute requirement for cations	643825	
2.8.2.24	additional information	not affected by FeCl3, FeCl2, CaCl2, CoCl2	643824