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EC Number
pH Minimum
pH Maximum
Commentary
Reference
2.4.1.18
3
9
-
705085
2.4.1.18
4.5
6
-
703793
2.4.1.18
5
9
more than 60% of enzyme activity remains when assayed at pH 5.0-9.0
757910
2.4.1.18
5
9
pH 5.0: about 40% of maximal activity, pH 9.0: about 50% of maximal activity
657731
2.4.1.18
5.5
7
the enzyme shows more than 70% activity between pH 5.5 and 7.0
756764
2.4.1.18
5.5
7.5
the enzyme shows at least 80% of maximal activity from pH 5.5 to pH 7.5. The enzyme activity decreases rapidly at pH values lower than 5.5 and higher than 9.0
758278
2.4.1.18
5.5
8.5
active at
736108
2.4.1.18
6.5
11
about 60% activity at pH 6.5, about 80% activity at pH 7.0, 100% activity at pH 7.5, more than 90% between pH 8.0, and 11.0
756961
2.4.1.18
7
9
iodine assay
701786
2.4.1.18
8
10
isozyme BE2 shows nearly half of the maximum activity at pH 10.0
735716
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