4.5
7.5
the enzyme shows a steep decrease by 90% of activity within 1.5 pH units on both sides of the optimum at pH 6.0 for the reduction reaction
4.7
7.5
sharp increase in activity at pH 4.7, half-maximal activity at pH 7.5, inactive at pH 9.0, recombinant enzyme, reduction reaction
5.8
7.8
50% of maximal activity at pH 5.8 and at pH 7.8, formation of (7S)-salutaridinol
8.5
10
50% of maximal activity at pH 5.8 and at pH 7.8, formationof salutaridine
9
10
maximal activity at pH 9.5, sharp decline in activity at pH 10.0, oxidation reaction, recombinant enzyme