1.2.1.19	Ca2+	no significant effect on the enzyme activity	
1.2.1.19	Mg2+	10% activation by 2 mM observed with 0.1 mM capronaldehyde as substrate	
1.2.1.19	Mn2+	no significant effect on the enzyme activity	
1.2.1.19	additional information	no requirement for bivalent cations