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Literature summary for 3.2.1.28 extracted from

  • Killick, K.A.
    Trehalase from the cellular slime mold Dictyostelium discoideum: purification and characterization of the homogeneous enzyme from myxamoebae (1983), Arch. Biochem. Biophys., 222, 561-573.
    View publication on PubMed

General Stability

General Stability Organism
stable for at least 4 successive freeze-thaw cycles Dictyostelium discoideum

Inhibitors

Inhibitors Comment Organism Structure
Ca2+ 1.0 mM CaCl2, 9% loss of activity Dictyostelium discoideum
Cu2+ 1.0 mM CuSO4, 13% loss of activity Dictyostelium discoideum
Hg2+ 1 mM, 58% inhibition Dictyostelium discoideum
Mg2+ 1.0 mM MgCl2, 13% loss of activity Dictyostelium discoideum
Tris 100 mM, 28% inhibition Dictyostelium discoideum
Urea 10 mM, 6% inhibition Dictyostelium discoideum

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
1.2
-
trehalose
-
Dictyostelium discoideum

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
95000
-
1 * 95000, SDS-PAGE Dictyostelium discoideum
100000
-
disc gel electrophoresis Dictyostelium discoideum
105000
-
gel filtration Dictyostelium discoideum

Organism

Organism UniProt Comment Textmining
Dictyostelium discoideum
-
-
-

Posttranslational Modification

Posttranslational Modification Comment Organism
glycoprotein
-
Dictyostelium discoideum

Purification (Commentary)

Purification (Comment) Organism
-
Dictyostelium discoideum

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
104
-
-
Dictyostelium discoideum

Storage Stability

Storage Stability Organism
-12°C, stable for at least 2 months Dictyostelium discoideum
4°-10°C, stable for at least 2-4 days Dictyostelium discoideum

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
trehalose + H2O absolute specificity Dictyostelium discoideum D-glucose
-
?

Subunits

Subunits Comment Organism
monomer 1 * 95000, SDS-PAGE Dictyostelium discoideum

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
50
-
-
Dictyostelium discoideum

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
45 50 5 min, stable Dictyostelium discoideum
55
-
5 min, 19% loss of activity Dictyostelium discoideum
60
-
5 min, 72% loss of activity Dictyostelium discoideum

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
5.5
-
-
Dictyostelium discoideum