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3.2.1.24: alpha-mannosidase

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

Word Map on EC 3.2.1.24

Reaction

2-O-alpha-D-mannopyranosyl-D-mannopyranose
+
H2O
= 2 alpha-D-mannopyranose

Synonyms

1,2-alpha-D-mannosidase, 1,2-alpha-mannosidase, acid alpha-mannosidase, acidic alpha-mannosidase, alpha 1,2-mannosidase, Alpha mannosidase 6A8B, alpha-1,2-mannosidase, alpha-1,3 mannosidase, alpha-1,4 mannosidase, alpha-D-mannopyranosidase, alpha-D-mannosidase, Alpha-D-mannoside mannohydrolase, alpha-man, alpha-mann, alpha-mannosidase, alpha-mannosidase C, alpha-mannosidase E-II, alpha-mannosidase I, alpha-mannosidase IA, alpha-mannosidase II, alpha-mannosidase III, alpha1,2-mannosidase, AMAN, class II alpha-mannosidase, CpGH125, ER-alpha-mannosidase, ER-mannosidase II, exo-alpha-mannosidase, GH38 alpha-mannosidase, GH38 alpha-mannosidase II, GH38 class II alpha-mannosidase, GH38 enzyme, Golgi alpha-mannosidase II, Golgi mannosidase IA, Golgi mannosidase IB, Laman, Lysosomal acid alpha-mannosidase, lysosomal alpha-D-mannosidase, lysosomal alpha-mannosidase, Man1p, MAN2B1, Man2C1, Man2C1 alpha-mannosidase, ManA, mannanase, MGG_00994.6, More, neutral alpha-mannosidase, neutral/cytosol mannosidase, p-nitrophenyl-alpha-mannosidase, SpGH125, SpGH38, Ssa-man, SSO3006, TM1851, TMM, velmanase alfa

ECTree

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

pH Range

pH Range on EC 3.2.1.24 - alpha-mannosidase

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pH RANGE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
3 - 8
-
fluorescence studies over a pH range show tryptophan in highly hydrophobic environment, pH change does not change the tryptophan environment
4 - 5.8
-
about half-maximal activity at pH 4 and 5.8, 0.1 M acetate buffer
4.2 - 6
pH 4.2: about 35% of maximal activity, pH 6.0: about 40% of maximal activity, wild-type enzyme
4.3 - 6
5 - 8
-
pH 5.0: about 80% of maximal activity, pH 8.0: about 50% of maximal activity
5.6
-
half maximal activity
5.7 - 6.7
-
pH 5.7: about 35% of maximal activity, pH 6.5-6.7: optimum
8
-
23% of maximum activity