Ca2+
1 mM, 12 h, 4°C, complete loss of activity
Cd2+
1 mM, 12 h, 4°C, 93% loss of activity
Cu2+
1 mM, 12 h, 4°C, complete loss of activity
D-glyceraldehyde
slight substrate inhibition, 25% inhibition at 2 mM
Hg2+
1 mM, 12 h, 4°C, 99% loss of activity
Mg2+
1 mM, 12 h, 4°C, 24% loss of activity
Mn2+
1 mM, 12 h, 4°C, 44% loss of activity
Ni2+
1 mM, 12 h, 4°C, 58% loss of activity
Zn2+
1 mM, 12 h, 4°C, 46% loss of activity