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Literature summary for 3.2.1.28 extracted from

  • Morin, P.R.; Potier, M.
    Intestinal and renal origin of trehalase activity in rabbit amniotic fluid (1987), Biochim. Biophys. Acta, 923, 371-380.
    View publication on PubMed

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
3.15
-
trehalose enzyme form kidney, intestine and amniotic fluid Oryctolagus cuniculus

Localization

Localization Comment Organism GeneOntology No. Textmining
brush border
-
Oryctolagus cuniculus 5903
-

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
48500
-
enzyme form amniotic fluid, protein part of the enzyme, radiation inactivation Oryctolagus cuniculus
49000
-
enzyme form kidney and intestine, protein part of the enzyme, radiation inactivation Oryctolagus cuniculus
66300 72000 depending on the amount of sugar bound to the enzyme, enzyme from amniotic fluid, calculation from hydrodynamic parameters Oryctolagus cuniculus
91000
-
enzyme from amniotic fluid, gel filtration Oryctolagus cuniculus
170000
-
enzyme from kidney and intestine, gel filtration in presence of 1% Triton Oryctolagus cuniculus

Organism

Organism UniProt Comment Textmining
Oryctolagus cuniculus
-
-
-

Source Tissue

Source Tissue Comment Organism Textmining
amniotic fluid early in gestation amniotic fluid enzyme activity originates exclusively from the fetal kidney, but more and more intestinal enzyme is released into the amniotic cavity as the fetus develops Oryctolagus cuniculus
-
intestine brush-border membrane Oryctolagus cuniculus
-
kidney brush border membrane Oryctolagus cuniculus
-

Storage Stability

Storage Stability Organism
-60°C, intestinal, renal and amniotic fluid enzyme retain full activity for at least 6 months Oryctolagus cuniculus

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
trehalose + H2O
-
Oryctolagus cuniculus D-glucose
-
?

Subunits

Subunits Comment Organism
?
-
Oryctolagus cuniculus

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
55
-
1 h, stable Oryctolagus cuniculus
60
-
t1/2: 30 min, in presence of 1% v/v Triton t1/2 is 12 min Oryctolagus cuniculus

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
6
-
-
Oryctolagus cuniculus