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Literature summary for 3.2.1.31 extracted from

  • Diez, T.; Cabezas, J.A.
    Properties of two molecular forms of beta-glucuronidase from the mollusc Littorina littorea L (1979), Eur. J. Biochem., 93, 301-311.
    View publication on PubMed

General Stability

General Stability Organism
freezing, inactivation due to dissociation Littorina littorea

Inhibitors

Inhibitors Comment Organism Structure
ascorbic acid
-
Littorina littorea
Cu2+
-
Littorina littorea
D-glucaro-1,4-lactone
-
Littorina littorea
glucuronic acid
-
Littorina littorea
heparin
-
Littorina littorea
Hg2+
-
Littorina littorea
Ni2+
-
Littorina littorea
Tris
-
Littorina littorea

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.018 3.08 phenolphthalein beta-D-glucuronide dependency on form of enzyme Littorina littorea
0.041 1.3 4-methylumbelliferyl beta-D-glucuronide
-
Littorina littorea
0.13 2.9 p-nitrophenyl-beta-D-glucuronide
-
Littorina littorea

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
113500
-
sedimentation equilibrium centrifugation of form I Littorina littorea
250000 310000 Littorina littorea, gel filtration Littorina littorea

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
additional information Littorina littorea
-
?
-
?

Organism

Organism UniProt Comment Textmining
Littorina littorea
-
marine mollusc
-

Purification (Commentary)

Purification (Comment) Organism
2 forms Littorina littorea

Source Tissue

Source Tissue Comment Organism Textmining
liver
-
Littorina littorea
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
additional information
-
-
Littorina littorea

Storage Stability

Storage Stability Organism
4°C, at least 1 month Littorina littorea

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
4-methylumbelliferyl beta-D-glucuronide + H2O
-
Littorina littorea 4-methylumbelliferone + beta-D-glucuronic acid
-
?
4-nitrophenyl beta-D-glucuronide + H2O
-
Littorina littorea 4-nitrophenol + D-glucuronic acid
-
?
additional information
-
Littorina littorea ?
-
?
phenolphthalein beta-D-glucuronide + H2O
-
Littorina littorea phenolphthalein + D-glucuronic acid
-
?
phenolphthalein-beta-D-glucuronide + H2O
-
Littorina littorea phenolphthalein + D-glucuronic acid
-
?

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
60
-
form I: 60 min, form II: 5 min Littorina littorea

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
3.4
-
form II Littorina littorea
4.1
-
form II Littorina littorea
4.4
-
form I Littorina littorea