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Literature summary extracted from

  • Verpoorte, J.A.
    Isolation and characterization of the major beta-N-acetyl-D-glucosaminidase from human plasma (1974), Biochemistry, 13, 793-799.
    View publication on PubMed

Activating Compound

EC Number Activating Compound Comment Organism Structure
3.2.1.52 bovine serum albumin
-
Homo sapiens
3.2.1.52 cysteine prevents inhibition by Hg2+-ions Homo sapiens
3.2.1.52 cysteine prevents inhibition by Ag2+-ions Homo sapiens
3.2.1.52 Human serum albumin
-
Homo sapiens

Inhibitors

EC Number Inhibitors Comment Organism Structure
3.2.1.52 acetate with 0.02 M 49% of activity remains Homo sapiens
3.2.1.52 Ag+ enzyme incubated before addition of substrate: with 0.0025 mM 18% of activity remains Homo sapiens
3.2.1.52 ascorbate only in presence of Cu2+ Homo sapiens
3.2.1.52 Cu2+ only in presence of ascorbate Homo sapiens
3.2.1.52 Fe2+ with 0.2 mM 28% of activity remains, citrate buffer, not inhibitory in succinate or acetate buffer Homo sapiens
3.2.1.52 Hg2+ added with substrate: with 0.0025 mM 45% of activity remains, enzyme incubated before addition of substrate: with 0.0025 mM 25% of activity remains Homo sapiens

KM Value [mM]

EC Number KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
3.2.1.52 0.108
-
4-methylumbelliferyl-2-acetamido-2-deoxy-beta-D-galactopyranoside
-
Homo sapiens
3.2.1.52 0.17
-
p-nitrophenyl-beta-2-acetamido-2-deoxy-D-galactopyranoside
-
Homo sapiens
3.2.1.52 0.555
-
4-methylumbelliferyl-2-acetamido-2-deoxy-beta-D-glucopyranoside with 0.01% bovine or human serum albumin Homo sapiens
3.2.1.52 0.58
-
4-methylumbelliferyl-2-acetamido-2-deoxy-beta-D-glucopyranoside
-
Homo sapiens
3.2.1.52 0.83
-
p-nitrophenyl-beta-2-acetamido-2-deoxy-D-glucopyranoside
-
Homo sapiens

Molecular Weight [Da]

EC Number Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
3.2.1.52 105000
-
sedimentation equilibrium using untreated enzyme, carboxymethylated enzyme in 6 M guanidine-HCl, meniscus depletion experiments with fresh enzyme prepatation at pH 11.5 Homo sapiens
3.2.1.52 107000
-
gel filtration Homo sapiens
3.2.1.52 120000
-
enzyme after dialysis and freeze-drying, 6 M guanidine-HCl, pH 7.2 Homo sapiens
3.2.1.52 260000
-
pH 2.5, fresh enzyme prepatation, meniscus depletion experiments Homo sapiens

Natural Substrates/ Products (Substrates)

EC Number Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
3.2.1.52 N-acetyl-beta-D-hexosaminides + H2O Homo sapiens
-
N-acetyl-D-hexosamines
-
?

Organism

EC Number Organism UniProt Comment Textmining
3.2.1.52 Homo sapiens
-
-
-

Posttranslational Modification

EC Number Posttranslational Modification Comment Organism
3.2.1.52 glycoprotein glucosaminylation Homo sapiens
3.2.1.52 glycoprotein sialylation Homo sapiens
3.2.1.52 glycoprotein galactosylation Homo sapiens

Purification (Commentary)

EC Number Purification (Comment) Organism
3.2.1.52 195fold to homogeneity Homo sapiens

Source Tissue

EC Number Source Tissue Comment Organism Textmining
3.2.1.52 serum
-
Homo sapiens
-

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
3.2.1.52 4-methylumbelliferyl-2-acetamido-2-deoxy-beta-D-galactopyranoside + H2O
-
Homo sapiens 4-methylumbelliferone + 2-acetamido-2-deoxy-beta-D-galactopyranoside
-
?
3.2.1.52 4-methylumbelliferyl-2-acetamido-2-deoxy-beta-D-glucopyranoside + H2O
-
Homo sapiens 4-methylumbelliferone + 2-acetamido-2-deoxy-beta-D-glucopyranoside
-
?
3.2.1.52 N-acetyl-beta-D-hexosaminides + H2O
-
Homo sapiens N-acetyl-D-hexosamines
-
?
3.2.1.52 p-nitrophenyl-beta-2-acetamido-2-deoxy-D-galactopyranoside + H2O
-
Homo sapiens 2-acetamido-2-deoxy-D-galactose + p-nitrophenol
-
?
3.2.1.52 p-nitrophenyl-beta-2-acetamido-2-deoxy-D-glucopyranoside + H2O
-
Homo sapiens 2-acetamido-2-deoxy-D-glucose + p-nitrophenol
-
?

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
3.2.1.52 4.5 5
-
Homo sapiens