5.4.99.11 4.5 7 the yeast strain displaying recombinant enzyme PdSIase is stable throughout relatively broad ranges of pH values and temperatures 748342 5.4.99.11 4.5 8 the immobilized enzyme retains more than 80% of its relative activity at pH 4.5-8.0 746691 5.4.99.11 5 6 the enzymatic activity is significantly lower outside the optimal pH range of 5.0-6.0 implying that the enzyme is very sensitive to pH 704227 5.4.99.11 5 7 purified native enzyme, stable at 726847 5.4.99.11 5 7 recombinant enzyme displayed on Saccharomyces cerevisiae surface, stable at 727181 5.4.99.11 5 7 the enzyme retains more than 60% of its original activity over a range of pH 5.0-7.0 at 30°C for 24 h 714486 5.4.99.11 5 7.5 the free enzyme retains more than 80% of its relative activity at pH 5.0-7.5 746691 5.4.99.11 5 8 1 h, more than 80% residual activity 679557 5.4.99.11 5.1 6.7 highest stability 3468