1.2.1.89 Ca2+ 1 mM, 12 h, 4°C, complete loss of activity 15 1.2.1.89 Cd2+ 1 mM, 12 h, 4°C, 93% loss of activity 52 1.2.1.89 Cu2+ 1 mM, 12 h, 4°C, complete loss of activity 19 1.2.1.89 D-glyceraldehyde slight substrate inhibition, 25% inhibition at 2 mM 639 1.2.1.89 Hg2+ 1 mM, 12 h, 4°C, 99% loss of activity 33 1.2.1.89 Mg2+ 1 mM, 12 h, 4°C, 24% loss of activity 6 1.2.1.89 Mn2+ 1 mM, 12 h, 4°C, 44% loss of activity 11 1.2.1.89 Ni2+ 1 mM, 12 h, 4°C, 58% loss of activity 38 1.2.1.89 Zn2+ 1 mM, 12 h, 4°C, 46% loss of activity 14