1.1.1.103	-20°C	
1.1.1.103	-20°C, 10 mM potassium phosphate, pH 7.0, 30% sucrose, 0.1 mM NAD+, 5 mM L-threonine, several months, no loss of activity	
1.1.1.103	-20°C, 14 mM 2-mercaptoethanol, 20% glycerol, at least 1 month, little loss of activity	
1.1.1.103	4°C, 50 mM Tris-HCl, pH 8.4, 1 mM 2-mercaptoethanol, 2 months, no loss of activity	
1.1.1.103	50 mM Tris–HCl buffer, pH 8.0