2.4.2.9 -15°C, partially purified enzyme, loss of 10% activity within 2 weeks 2.4.2.9 -20°C, 20 mM Hepes-KOH, pH 7.4, 1 mM DTT, stable for 3 days 2.4.2.9 -70°C, 20 mM Hepes-KOH, pH 7.4, 1-2 months without loss of activity 2.4.2.9 0°C, enzyme concentration 0.001 mg/ml, 50% loss of activity in 1 h 2.4.2.9 4°C for 13 days or 1 year at -70°C, ethylene glycol, significantly increases stability with virtually no loss of activity 2.4.2.9 4°C, 10 mM Tris-HCl, pH 7.5, 10 mM MgCl2, 2 mM 2-mercaptoethanol, 44% loss of activity after 8 d 2.4.2.9 4°C, concentrated enzyme is stable for several months, on dilution occurs rapid loss of activity 2.4.2.9 4°C, purified detagged recombinant enzyme, in Tris-NaCl buffer, stable for at least 1 week 2.4.2.9 4°C, purified enzyme, TMD50 buffer, stable for at least 1 week 2.4.2.9 4°C, rapid loss of activity when stored in presence of Mg2+ 2.4.2.9 4°C, Tris-HCl, pH 8.0, 1 mM EDTA, 2 mM DTT, 1 mM UMP, loss of 40% activity in 1 week 2.4.2.9 4°C, Tris-HCl, pH 8.0, 1 mM EDTA, 2 mM DTT, loss of 70% activity in 4 days