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3.1.1.11: pectinesterase

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

Word Map on EC 3.1.1.11

Reaction

Pectin
+ n H2O = n methanol +
pectate

Synonyms

Ani-PME2, At1g23200, AtPME1, AtPME3, BcPME1, cell wall pectin methylesterase, CsPME, Cthe_2949, CtPME, HMS, hms-1, luPME, MICRO 2676, MICRO 2764, More, Nicotiana tabacum pollen tube PME1, Novoshape, NtPPME1, Ole e 11, Ole e 11.0101, Ole e 11.0102, P65, PE, PE2, pectase, pectin demethoxylase, pectin esterase, pectin methoxylase, pectin methyl esterase, pectin methyl-esterase, pectin methylesterase, pectin methylesterase 3, pectin methylesterase31, pectin methyltesterase, pectine methylesterase, pectinesterase, pectinesterase 31, pectinmethylesterase, pectinoesterase, pectofoetidin, PemB, PEST 1, PEST 2, PME, PME I, PME II, PME III, pme-zj5a, PME1, PME2, PME3, PME31, PME34, PME35, PME4, PME5, PME6, PME7, PME8, PME9, pmeA, pmeB, PMEP, PMEU1, PMT, pollen specific PME, psectin methylesterase, RIP, S6PE, Sal k 1, salt-dependent pectin methylesterase, Sl-PME, thermally tolerant pectin methylesterase, thermolabile pectin methylesterase, TL-PME, TT-PME, type I PME, Xoo, XOO2696

ECTree

     3 Hydrolases
         3.1 Acting on ester bonds
             3.1.1 Carboxylic-ester hydrolases
                3.1.1.11 pectinesterase

pH Range

pH Range on EC 3.1.1.11 - pectinesterase

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pH RANGE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
1 - 6
-
pH 1.0: about 75% of maximal activity, pH 6.0: about 35% of maximal activity, hydrolysis of low molecular pectic acid methyl ester
2 - 5
-
about 75% of maximal activity at pH 2.0 and at pH 5.0, hydrolysis of pectin
3 - 9
3.3 - 4.2
over 70% of maximal activity within this range
3.5 - 4.5
3.5 - 5.5
-
about 50% activity at pH 3.5 and pH 5.5
4 - 6.5
-
pH 4.0: about 45% of maximal activity, pH 6.5: about 50% of maximal activity, pectin hydrolase II
4 - 8
-
pH 4: 24% of maximal activity, pH 8: 98% of maximal activity, no activity at pH 9, isoenzyme PE II
4 - 9
-
very low activity at pH 4, sudden increase of activity at higher pH up to pH 7, slight decrease of activity at higher pH
4 - 9.5
-
-
4.5 - 5
-
about 90% activity at pH 4.5,4.6, and 4.8, 100% activity at pH 4.7, about 60% activity at pH 4.9, about 50% activity at pH 5.0
4.5 - 7.5
-
-
4.5 - 8
4.5 - 8.5
Acrocylindrium sp.
-
pH 4.5: about 75% of maximal activity, pH 8.5: about 80% of maximal activity
4.5 - 9
-
rapid increase of activity between pH 4.5-6.5, low loss of activity at pH values above 7.5, 83% of maximum activity at pH 9.0
4.5 - 9.5
4.7 - 9
-
pH 4.7: about 45% of maximal activity, pH 9.0: about 65% of maximal activity
4.8 - 6.8
-
about 55% of maximal activity at pH 4.8 and at pH 6.8, pectin hydrolase I
5 - 10
5 - 6
-
about 55% activity at pH 5-6
5 - 8.5
-
-
5 - 9
-
pH 5: 58% of maximal activity, pH 9: 64% of maximal activity, isoenzyme PE I
5.2 - 7.6
-
pH 5.2: about 75% of maximal activity, pH 7.6: about 70% of maximal activity
5.6 - 7.6
isoform alpha activity is similar at pH 5.6 and pH 7.6, isoform gamma activity is higher at pH 5.6
6 - 10
-
about 70% of maximal activity at pH 6.0 and at pH 10.0
6 - 7
Cucumis sativa
-
maximum stability
6 - 9
6 - 9.5
-
no enzyme activity below pH 6 at 50 mM NaCl, minimal level of activity at 10 mM NaCl between pH 7.5 and 9.5, no enzyme activity at 10 mM below pH 7.5
6.5 - 8.5
-
pH 6.5: about 50% of maximal activity, pH 8.5: about 60% of maximal activity
6.5 - 9
over 50% of maximal activity within this range
7 - 10
7 - 8
7.5 - 11
-
pH 7.5: about 50% of maximal activity, pH 11.0: about 85% of maximal activity
7.5 - 9.5
-
-
additional information