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3.2.1.113: mannosyl-oligosaccharide 1,2-alpha-mannosidase

This is an abbreviated version!
For detailed information about mannosyl-oligosaccharide 1,2-alpha-mannosidase, go to the full flat file.

Word Map on EC 3.2.1.113

Reaction

Man6GlcNAc2-[protein] (isomer 6A1,2,3)
+
H2O
=
Man5GlcNAc2-[protein]
 +
beta-D-mannopyranose

Synonyms

(alpha1,2)-mannosidase-I, 1,2-alpha-mannosidase, alpha-(1->2)-mannosidase I, alpha-1,2 mannosidase I, alpha-1,2-mannosidase, alpha-1,2-mannosidase IC, alpha-1,2-mannosidaseI, alpha-1-2-mannosidase, alpha-mannosidase, alpha1,2-mannosidase, alpha1,2-mannosidase I, alpha1-2-mannosidase I, At1g51590, At3g21160, class I endoplasmic reticulum 1,2-alpha-mannosidase, D2030.1, endoplasmic reticulum mannosidase I, ER alpha-1,2-mannosidase, ER-Man, exo-alpha-1,2-mannanase, FmanIBp, fungal alpha-1,2-mannosidase, glycoprotein processing mannosidase I, Golgi alpha-mannosidase I, Golgi alpha1,2-mannosidase I, Golgi alpha1,2-mannosidase IA, Golgi alpha1,2-mannosidase IB, Golgi alpha1,2-mannosidase IC, Golgi alpha1,2-mannosidase II, GolgiManI, HMIC, Man(9)-alpha-mannosidase, MAN1A1, MAN1A2, MAN1B1, MAN1C1, Man9 processing alpha-mannosidase, Man9-alpha-mannosidase, Man9-mannosidase, Man9GlcNAc2-specific processing alpha-mannosidase, manE, ManI, MANIa, ManIA2, MANIb, ManIC, mannose-9 processing alpha-mannosidase, mannosidase 1A, mannosidase 1B, mannosidase I, mannosidase, exo-1,2-alpha-, Mas1, MIa, MIa,b,c, MIb, MIc, MII, MIIx, MNS1, Mns1p, MNS2, msdC, N-glycan processing class I alpha-1,2-mannosidase, processing alpha-1,2-mannosidase IC

ECTree

     3 Hydrolases
         3.2 Glycosylases
             3.2.1 Glycosidases, i.e. enzymes that hydrolyse O- and S-glycosyl compounds
                3.2.1.113 mannosyl-oligosaccharide 1,2-alpha-mannosidase

pH Range

pH Range on EC 3.2.1.113 - mannosyl-oligosaccharide 1,2-alpha-mannosidase

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pH RANGE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
4.8 - 6.8
-
about half-maximal activity at pH 4.8 and 6.8
5.2 - 6.7
-
about half-maximal activity at pH 5.2 and 6.7
5.2 - 7.3
-
about half-maximal activity at pH 5.2 and 7.3, in the presence of egg yolk lyso-phosphatidylcholine
5.3 - 6.6
-
about half-maximal activity at pH 5.3 and 6.6
5.5 - 7
5.5 - 7.5
-
about half-maximal activity at pH 5.5 and 7.5, in the presence of soybean phosphatidylinositol
5.5 - 8
-
41% activity at pH 5.5, 100% activity at pH 7.0, and 18% activity at pH 8.0
6 - 6.8
-
50% of the enzyme activity remains at pH 6.0 and 6.8, and activity falls off rapidly above and below these values
6 - 8
the enzyme is active between pH 6.0 and 8.0