2.1.1.14	Ca2+	can replace Mg2+	441326	
2.1.1.14	cadmium	Cd2+ may replace the Zn2+ ion in the active site	755889	
2.1.1.14	Mg2+	at low phosphate concentration, 0.1 mM, the Mg2+-stimulation is 4.5fold, smaller stimulation at higher concentrations of phosphate	441323	
2.1.1.14	Mg2+	no stimulation	441326, 441337	
2.1.1.14	Mg2+	required	441172	
2.1.1.14	Mg2+	stimulates	441322, 441323, 441326	
2.1.1.14	Mn2+	below 1 mM more effective than Mg2+, above 1 mM inhibitory	441172	
2.1.1.14	phosphate	-	441172, 441322, 441323, 441326, 441328, 441337	
2.1.1.14	Zinc	enzyme contains zinc	657437	
2.1.1.14	Zinc	required for activation and binding of L-homocysteine	660333	
2.1.1.14	Zinc	Zn2+ bound in the C-terminal domain exhibits tetrahedral coordination with the side chains of His652, Cys654, Glu676 and Cys737	755889	
2.1.1.14	Zn2+	-	441337, 720259	
2.1.1.14	Zn2+	1 equivalent per subunit	441332	
2.1.1.14	Zn2+	characterization of zinc site	441218	
2.1.1.14	Zn2+	requires zinc for activity	676741