4.6.1.21	Ca2+	stimulating	134566	
4.6.1.21	Cd2+	reverses EDTA- and o-phenanthroline-induced inhibition	134569	
4.6.1.21	Co2+	reverses EDTA- and o-phenanthroline-induced inhibition	134569	
4.6.1.21	Co2+	reverses poly(A)-induced inhibition	134565	
4.6.1.21	Mg2+	reverses EDTA- and o-phenanthroline-induced inhibition	134569	
4.6.1.21	Mg2+	reverses poly(A)-induced inhibition at a concentration of 0.05 mM	134565	
4.6.1.21	Mg2+	stimulating	134566	
4.6.1.21	Mn2+	reverses EDTA- and o-phenanthroline-induced inhibition	134569	
4.6.1.21	Ni2+	inhibitory even at low concentrations	134565