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Literature summary for 3.2.1.11 extracted from

  • Chen, L.; Yu, C.; Zhou, X.; Zhang, Y.
    Rational introduction of disulfide bond to enhance optimal temperature of Lipomyces starkeyi alpha-dextranase expressed in Pichia pastoris (2009), J. Microbiol. Biotechnol., 19, 1506-1513.
    View publication on PubMed

Cloned(Commentary)

Cloned (Comment) Organism
expressed in Pichia pastoris strain GS115 Lipomyces starkeyi

Protein Variants

Protein Variants Comment Organism
D279C/S289C the mutant shows a more than 13°C improvement on its optimal temperature compared to the wild type enzyme Lipomyces starkeyi
D279C/S289C the mutant shows a more than 3°C improvement on its optimal temperature compared to the wild type enzyme Lipomyces starkeyi
T245C/N248C the mutant shows a more than 3°C improvement on its optimal temperature compared to the wild type enzyme Lipomyces starkeyi

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
67200
-
calculated from amino acid sequence Lipomyces starkeyi

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
dextran + H2O Lipomyces starkeyi
-
oligosaccharides
-
?

Organism

Organism UniProt Comment Textmining
Lipomyces starkeyi
-
-
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
13.66
-
wild type enzyme, at pH 4.5, 30°C Lipomyces starkeyi
14.93
-
mutant enzyme D279C/S289C, at pH 4.5, 43°C Lipomyces starkeyi
25.6
-
mutant enzyme T245C/N248C, at pH 5.0, 33°C Lipomyces starkeyi
44.52
-
mutant enzyme D279C/S289C, at pH 5.0, 33°C Lipomyces starkeyi

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
dextran + H2O
-
Lipomyces starkeyi oligosaccharides
-
?

Synonyms

Synonyms Comment Organism
alpha-dextranase
-
Lipomyces starkeyi

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
30
-
-
Lipomyces starkeyi

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
4.5
-
-
Lipomyces starkeyi