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EC Number
pH Minimum
pH Maximum
Commentary
Reference
3.1.1.53
5
8
pH 5: 16% of the activity, pH 8: 80% of the activity
94417
3.1.1.53
6
-
negligible activity below
750708
3.1.1.53
6.8
8.2
HEPES buffer
701059
3.1.1.53
7
-
60% lower activity compared to optimum
698132
3.1.1.53
7
8.5
using 4-nitrophenyl acetate as substrate
94420
3.1.1.53
7.5
9
-
674296
3.1.1.53
7.5
9
below pH 5.7 enzymatic activity is almost negligible. By increasing the pH from pH 7.5 to alkaline values, enzyme activity reaches its maximum value at pH 8.7, followed by a drastic decrease at pH 9.0 with a residual activity of 32.8%
750712
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