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3.2.1.20: alpha-glucosidase

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

Word Map on EC 3.2.1.20

Reaction

maltotetraose
+ 3 H2O = 4 alpha-D-glucose

Synonyms

6-phospho-alpha-glucosidase, AAGR-1, AAGR-2, AAGR-3, AAGR-4, acid alpha-glucosidase, acid alpha-glucoside hydrolase, acid GAA, acid maltase, acidic alpha-glucosidase, AG, AgdB, AGL, AglA, aGlu, alglucosidase alfa, alpha-1,4-glucosidase, alpha-D-glucosidase, alpha-D-glucoside glucohydrolase, alpha-GD, alpha-glucopyranosidase, alpha-glucosid-specific GH4 enzyme, alpha-glucosidase, alpha-glucosidase B, alpha-glucosidase I, alpha-glucosidase II, alpha-glucosidase III, alpha-glucosidase MAL12, alpha-glucosidase MAL32, alpha-glucosidase type I, alpha-glucosidase type IV, alpha-glucoside glucohydrolase, alpha-glucoside hydrolase, alpha-transglucosidase, alphaGlu1, alphaGlu2, alphaGlu3, alphaGluFa, Amy112, CHEI, CWH41, exo-alpha-l, 4-glucosidase, exo-alpha-l,4-glucosidase, GAA, GH13 alpha-glucosidase, GluA, glucoamylase, glucoinvertase, glucosidoinvertase, glucosidosucrase, GlyFa1, GlyFa2, GSJ, HBG III, HBGase I, HBGase II, HBGase III, high pI alpha-glucosidase, intestinal alpha-glucosidase, intestinal maltase, JHGase I, MAL12, MAL2, MAL32, MalA, MalH, maltase, maltase glucoamylase, maltase-glucoamylase, maltodextrin glucosidase, MalZ, MGAM, More, myozyme, NAG, neutral alpha-glucosidase, PalH, Pars_2044, phospho-alpha-glucosidase, R-glucosidase, recombinant human GAA, rhGAA, Saci1160, st2525, Ta0298, TcaAG, TtGluA

ECTree

     3 Hydrolases
         3.2 Glycosylases
             3.2.1 Glycosidases, i.e. enzymes that hydrolyse O- and S-glycosyl compounds
                3.2.1.20 alpha-glucosidase

pH Range

pH Range on EC 3.2.1.20 - alpha-glucosidase

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pH RANGE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
1 - 4
pH 1.0: about 45% of maximal activity, pH 4.0: about 55% of maximal activity
1 - 7
-
pH 1: about 35% of maximal activity, pH 7: about 30% of maximal activity
1.5 - 5
pH 1.5: about 70% of maximal activity, pH 5.0: about 60% of maximal activity
1.5 - 6
pH 1.5: 74% of maximal activity, pH 2.0: 92% of maximal activity, pH 6.0: about 35% of maximal activity. No measurable activity is detected at pH values above 7.0 and below 1.0
2.3 - 5.5
-
pH 2.3: about 65% of maximal maltase activity, about 20% of maximal glucoamylase activity, pH 5.5: about 35% of maximal maltase activity, about 45% of maximal glucoamylase activity
2.5 - 5.5
2.5 - 7
-
activity range, profile, overview
3 - 5
-
pH 3.0: 90% of maximal activity, pH 5.0: about 65% of maximal activity, no activity at pH 6.5
3 - 6
-
pH 3.0: about 40% of maximal activity of alpha-glucosidase I, about 65% of maximal activity of alpha-glucosidase II, pH 6.0: about 45% of maximal activity of alpha-glucosidase I, about 50% of maximal activity of glucosidase II
3 - 7
3 - 8
-
increase of enzyme activity with pH increase, above 8 decrease of enzyme activity with increasing pH
3.4 - 7.3
Zea indurata
-
30°C, 20 h, stable
3.5 - 5
3.5 - 6.5
-
about 50% of maximal activity at pH 3.5 and at pH 6.5
3.5 - 8
-
pH 3.5: about 40% of maximal activity, pH 8.0: about 20% of maximal activity
4 - 6
more than 90% of maximum activity
4 - 6.5
Saccharomyces logos
-
pH 4.0: about 60% of maximal activity, pH 6.5: about 55% of maximal activity
4 - 6.75
4 - 7
4 - 7.5
Thermochaetoides thermophila
-
over 50% of maximal activity within this range, inactive at pH 4.0 and pH 8.0
4 - 8
4 - 9
4.5 - 6
4.5 - 6.2
-
pH 4.5: about 45% of maximal activity, pH 9.0: about 35% of maximal activity
4.5 - 7.3
-
pH 4.5: about 80% of maximal activity, pH 7.3: about 50% of maximal activity
4.5 - 9
-
pH 4.5: about 55% of activity with maltose as substrate, about 30% of activity with starch as substrate, pH 8.0: about 60% of activity with maltose as substrate, about 50% of activity with starch as substrate
5 - 7
-
about 70% of activity at pH 5.5 and pH 6.5, maltase and alpha-glucosidase
5.5 - 8.5
-
pH 5.5: about 25% of maximal activity, alpha-glucosidase AB. About 30% of maximal activity, alpha-glucosidase C. pH 8.5: about 45% of maximal activity, alpha-glucosidase AB. About 70% of maximal activity, alpha-glucosidase C
5.5 - 9
-
pH 5.5: about 35% of maximal activity of the intracellular enzyme, about 65% of maximal activity of the extracellular enzyme, pH 9.0: about 40% of maximal activity, intracellular enzyme and extracellular enzyme
6 - 8
6 - 9
6.2 - 7.4
the enzyme is active between pH 6.2 and 7.4
6.2 - 8.6
Alkalihalophilus pseudofirmus
over 50% of maximal activity within this range, profile overview
6.5 - 8.5
50% of maximal activity at pH 6.5 and pH 8.5
7 - 9.5
-
pH 7.0: optimum, pH 9.5: 15% of maximal activity, pH 10.0: no activity
additional information
pH-profile