4.1.1.71	Ca2+	2 mM, 1.8fold increase in activity	747943	
4.1.1.71	Ca2+	about 1.8fold increase of activity at 2 mM	747943	
4.1.1.71	Ca2+	can partially replace Mg2+ in activation	648364	
4.1.1.71	Ca2+	no effect	648365	
4.1.1.71	Co2+	can partially replace Mg2+ in activation	648364	
4.1.1.71	Co2+	no effect	648365	
4.1.1.71	Fe2+	dependent on	714093	
4.1.1.71	Mg2+	2 mM, 2.3fold increase in activity. Km value 0.059 mM	747943	
4.1.1.71	Mg2+	best stimulant, about 2.3fold increase of activity at 2 mM (used in assay conditions)	747943	
4.1.1.71	Mg2+	strictly required, Km-value 0.196 mM	666725