1.1.1.103 4 11 the purified enzyme is very stable from pH 6.0 to pH 11.0 in the glycine-KOH system, the enzyme is unstable in sodium acetate buffer, pH 4.0-5.0, and Na2CO3-NaHCO3 buffer, pH 10.0-11.0 721272 1.1.1.103 4.5 9.5 purified recombinant enzyme, 20 min, 50°C, no loss in activity 722747 1.1.1.103 5 8 - 729112 1.1.1.103 5.5 7.5 activity at pH 5.5 is 50% of that at pH 7.5 698526