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2.4.1.19: cyclomaltodextrin glucanotransferase

This is an abbreviated version!
For detailed information about cyclomaltodextrin glucanotransferase, go to the full flat file.

Word Map on EC 2.4.1.19

Reaction

alpha-D-glucopyranosyl-(1-4)-alpha-D-glucopyranosyl-(1-4)-alpha-D-glucopyranosyl-(1-4)-alpha-D-glucopyranosyl-(1-4)-alpha-D-glucopyranosyl-(1-4)-alpha-D-glucopyranosyl-(1-4)-alpha-D-glucopyranose
=
alpha-cyclodextrin
 +
alpha-D-glucose

Synonyms

1,4-alpha-D-glucopyranosyl transferase, Akrilex C cyclodextrin glycosyltransferase, alpha-1,4-glucan 4-glycosyltransferase, cyclizing, alpha-cgt, alpha-CGTase, alpha-cyclodextrin glucanotransferase, alpha-cyclodextrin glucosyltransferase, alpha-cyclodextrin glycosyltransferase, Bacillus macerans amylase, beta-CGTase, beta-cyclodextrin glucanotransferase, beta-cyclodextrin glucosyltransferase, beta-cyclodextrin glycosyltransferase, beta-cyclodextrinase, BMA, C-CGTase, CD glucanotransferase, CGT, CGT13, CGTase, cgtS, CGTse ET1, CGT_TK, cyclodextrin beta-glucanotransferase, cyclodextrin glucanotransferase, cyclodextrin glucosyltransferase, cyclodextrin glycosyl transferase, cyclodextrin glycosyltransferase, cyclodextrin-glycosyltransferase, cyclodextrinase, cyclomaltodextrin glucanyltransferase, cyclomaltodextrin glucotransferase, cyclomaltodextrin glycanotransferase, cyclomaltodextrin glycosyltransferase, gamma-CGTase, gamma-cyclodextrin glycosyltransferase, konchizaimu, M-CGTase, More, neutral-cyclodextrin glycosyltransferase, PFCGT, Toruzyme

ECTree

     2 Transferases
         2.4 Glycosyltransferases
             2.4.1 Hexosyltransferases
                2.4.1.19 cyclomaltodextrin glucanotransferase

pH Range

pH Range on EC 2.4.1.19 - cyclomaltodextrin glucanotransferase

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pH RANGE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
3.5 - 9.5
4 - 10
-
ATCC 21783
4 - 11
-
activity range, about 60% of maximal activity at pH 4.5-9.0
4 - 6
4 - 8.5
4 - 9
-
enzyme immobilized on glyoxyl-agarose and free enzyme present similar pH/activities profiles, with two peaks at pH values of 5.5 and 7 and a minimum at pH 6.0-6.5 in both amylolytic and CGTase activities. Activities decrease after these two maximum values. The glyoxyl CGTase retains 30% of amylase activity at pH 4 and 50% at pH 9. The soluble enzyme retains 10% and 30%, respectively. In synthetic activities differences are not significant
4 - 9.5
-
loss of cyclization activity above and below
4.5 - 10
-
activity range, about 20% of maximal activity at pH 4.5, and 40% at pH 10.0
4.5 - 6.7
-
more than 80% activity in the range 5.0-6.7
4.5 - 9.5
-
No. 5 strain
5 - 10
5 - 11
5 - 7
5 - 8
5 - 9
5 - 9.5
-
INMIA 3849
6 - 10
-
there is no enzyme activity at pH lower than 6.0, but gradually increases with pH and then, after reaching its maxima pH 9.0 enzyme activity declines at pH 10 and lastly is lost as pH reaches to 11.0
6 - 9
-
strain 1011, wild-type and mutant enzymes retain 80% activity
8 - 10
-
most active