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Literature summary for 2.4.1.5 extracted from

  • Devi, N.; Azmi, W.
    Alginate immobilized dextransucrase of Leuconostoc lactis KU665298 for the biocatalytic synthesis of dextran polymer in a bioreactor (2018), Trends Carbohydr. Res., 10, 30-43 .
No PubMed abstract available

Application

Application Comment Organism
industry the enzyme immobilized on calcium alginate as entrapment matrix can be utilized for synthesis of dextran and can be easily separated from the product, resulting in high purity of dextran Leuconostoc lactis

General Stability

General Stability Organism
Ca2+ is required for stability Leuconostoc lactis
immobilization on calcium alginate as entrapment matrix increases heat stability of the enzyme Leuconostoc lactis

Inhibitors

Inhibitors Comment Organism Structure
Cu2+
-
Leuconostoc lactis
dithiothreitol
-
Leuconostoc lactis
EDTA
-
Leuconostoc lactis
Hg2+
-
Leuconostoc lactis
SDS
-
Leuconostoc lactis
Zn2+
-
Leuconostoc lactis

Metals/Ions

Metals/Ions Comment Organism Structure
Ca2+ required for optimal activity Leuconostoc lactis

Organism

Organism UniProt Comment Textmining
Leuconostoc lactis
-
-
-
Leuconostoc lactis KU665298
-
-
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
61.7
-
enzyme immobilized on agar, pH and temperature not specified in the publication Leuconostoc lactis
282
-
enzyme immobilized on carrageenan, pH and temperature not specified in the publication Leuconostoc lactis
393
-
enzyme immobilized on calcium alginate, pH and temperature not specified in the publication Leuconostoc lactis

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
sucrose
-
Leuconostoc lactis D-fructose + dextran
-
?
sucrose
-
Leuconostoc lactis KU665298 D-fructose + dextran
-
?

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
30
-
soluble enzyme Leuconostoc lactis
35
-
enzyme immobilized on calcium alginate as entrapment matrix Leuconostoc lactis

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
5.5
-
soluble and immobilized enzyme Leuconostoc lactis