15
30
xanthine
30°C, pH 7.4, value depending on preparation, enzyme isolated from Aspergillus nidulans
32
-
xanthine
pH 7.4, 25°C, mutant enzyme C357A
34
-
xanthine
pH 7.4, 25°C, mutant enzyme D138A
35
-
xanthine
pH 7.4, 25°C, mutant enzyme Q356A
38
-
xanthine
pH 7.4, 25°C, mutant enzyme N358A
40
-
xanthine
pH 7.4, 25°C, mutant enzyme E137A
60
-
xanthine
pH 7.4, 25°C, mutant enzyme K122A
71.4
-
xanthine
25°C, pH 7.4, recombinant enzyme isolated from Escherichia coli
72
-
xanthine
pH 7.4, 25°C, wild-type enzyme