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Literature summary for 3.2.1.52 extracted from

  • Bouquelet, S.; Spik, G.
    Characterization and localization of four forms of N-acetyl-beta-D-hexosaminidase from fenugreek (Trigonella foenum graecum) germinated seeds (1976), FEBS Lett., 63, 95-101.
    View publication on PubMed

Inhibitors

Inhibitors Comment Organism Structure
N-acetyl-beta-D-galactosaminolactone
-
Trigonella foenum-graecum
N-acetyl-beta-D-glucosaminolactone
-
Trigonella foenum-graecum

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.04
-
p-nitrophenyl-beta-2-acetamido-2-deoxy-D-glucopyranoside form I Trigonella foenum-graecum
0.04
-
p-nitrophenyl-beta-2-acetamido-2-deoxy-D-galactopyranoside form IV Trigonella foenum-graecum
0.08
-
p-nitrophenyl-beta-2-acetamido-2-deoxy-D-glucopyranoside form III Trigonella foenum-graecum
0.09
-
p-nitrophenyl-beta-2-acetamido-2-deoxy-D-galactopyranoside form III Trigonella foenum-graecum
0.15
-
p-nitrophenyl-beta-2-acetamido-2-deoxy-D-galactopyranoside form I Trigonella foenum-graecum
0.37
-
p-nitrophenyl-beta-2-acetamido-2-deoxy-D-glucopyranoside form IV Trigonella foenum-graecum
0.55
-
p-nitrophenyl-beta-2-acetamido-2-deoxy-D-galactopyranoside form II Trigonella foenum-graecum
0.62
-
p-nitrophenyl-beta-2-acetamido-2-deoxy-D-glucopyranoside form II Trigonella foenum-graecum

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
N-acetyl-beta-D-hexosaminides + H2O Trigonella foenum-graecum
-
N-acetyl-D-hexosamines
-
?

Organism

Organism UniProt Comment Textmining
Trigonella foenum-graecum
-
-
-

Purification (Commentary)

Purification (Comment) Organism
form I: 185fold, form II: 670fold, form III: 20880fold, form IV: 4740fold Trigonella foenum-graecum

Reaction

Reaction Comment Organism Reaction ID
(N-acetyl-D-glucosamine)4 + 3 H2O = 4 2-(acetylamino)-2-deoxy-beta-D-glucopyranose same active site for N-glucosaminidase and N-galactosaminidase activities Trigonella foenum-graecum

Source Tissue

Source Tissue Comment Organism Textmining
cotyledon forms I and II Trigonella foenum-graecum
-
embryo forms III and IV Trigonella foenum-graecum
-
endosperm form II Trigonella foenum-graecum
-
seed germinating seeds Trigonella foenum-graecum
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
additional information
-
-
Trigonella foenum-graecum

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
N-acetyl-beta-D-hexosaminides + H2O
-
Trigonella foenum-graecum N-acetyl-D-hexosamines
-
?
p-nitrophenyl-beta-2-acetamido-2-deoxy-D-galactopyranoside + H2O
-
Trigonella foenum-graecum 2-acetamido-2-deoxy-D-galactose + p-nitrophenol
-
?
p-nitrophenyl-beta-2-acetamido-2-deoxy-D-glucopyranoside + H2O
-
Trigonella foenum-graecum 2-acetamido-2-deoxy-D-glucose + p-nitrophenol
-
?