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2.4.1.10: levansucrase

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

Word Map on EC 2.4.1.10

Reaction

sucrose
+
[6)-beta-D-fructofuranosyl-(2->]n alpha-D-glucopyranoside
=
D-glucose
+
[6)-beta-D-fructofuranosyl-(2->]n+1 alpha-D-glucopyranoside

Synonyms

(2,6)-beta-D-fructan:D-glucose 6-fructosyltransferase, 6-SFT, 6G-FFT2, beta-2,6-fructan: D-glucose-1-fructosyltransferase, beta-2,6-fructan:D-glucose 1-fructosyltransferase, beta-2,6-fructosyltransferase, endolevanase, fructansucrase, fructosyltransferase, sucrose 6-, FTF, Lev, LEV-Y, levanase-sucrase, levansucrase, LevB1, LevB1SacB, LevJ, LEVS, LevU, Lsc, Lsc-3, Lsc2, Lsc3, LscA, LscrA, LSD, LsdA, LvnS, m1ft, M1FT protein, SacB, sucrose 6-fructosyltransferase, sucrose: 2, 6-beta-D-fructan 6-beta-Dfructosyltransferase, sucrose:2,6-beta-D-fructan:6-beta-D-fructosyltransferase, sucrose:fructan 6-fructosyltransferase, T1-LS, T2-LS, type 1 levansucrase

ECTree

     2 Transferases
         2.4 Glycosyltransferases
             2.4.1 Hexosyltransferases
                2.4.1.10 levansucrase

pH Range

pH Range on EC 2.4.1.10 - levansucrase

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pH RANGE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
3 - 10
-
almost no activity under pH 3.0 and above pH 10.0
3 - 7.5
-
50% of the maximal activity are detected at pH 3 and pH 5.5, residual activity is measured at pH 7.5
3.5 - 8.3
pH 3.5: about 55% of maximal activity, pH 8.3: about 60% of maximal activity, levan synthesis
4 - 6
4 - 6.2
pH 4.0: about 50% of the optimal activity, pH 6.2: about 50% of maximal activity. A pH above 7 leads to a complete inhibition of the levansucrase
4 - 7
-
the enzyme activity is greatly reduced at pH below 4.0 or above pH 7.0
4 - 8
-
activity range, free and immobilized enzymes
4 - 8.5
-
native and recombinant enzymes, 50% of maximal activity at pH 4.0 and pH 8.5
4 - 9
-
pH activity profile, overview
4.2 - 9.2
-
26% and 18% decrease in levansucrase activity is noticed at pH 4.2 and 9.2, respectively
4.4 - 6.8
-
activity range of free and immobilized enzymes, with higher activity of the immobilized enzyme, profiles, overview
4.8 - 6.8
-
about half-maximal activity at pH 4.8 and pH 6.8
5 - 7
5 - 8.4
Q60114
recombinant enzyme
5.5 - 6.5
the best pH range for activity is between 5.5 and 6.5. Above pH 8.0 the enzyme shows an almost complete inhibition
5.5 - 8
-
activity range, profile overview
5.5 - 8.5
more than 50% activity between pH 5.5 and 8.5
5.6 - 7.6
6 - 8.5
-
the enzyme remains relative activity in the pH range of from 6.5 to 8.0. The enzyme retains more than 80% of initial activity when pH varying from 6.0 to 7.5 at 45°C, but loses almost 60% transfructosylation activity when the pH shifts to lower than 5.5 or higher than 8.0
additional information