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Literature summary for 2.7.1.6 extracted from

  • Zou, Y.; Wang, W.; Cai, L.; Chen, L.; Xue, M.; Zhang, X.; Shen, J.; Chen, M.
    Substrate specificity of galactokinase from Streptococcus pneumoniae TIGR4 towards galactose, glucose, and their derivatives (2012), Bioorg. Med. Chem. Lett., 22, 3540-3543.
    View publication on PubMed

Cloned(Commentary)

Cloned (Comment) Organism
expressed in Escherichia coli Streptococcus pneumoniae

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
15.76
-
N-acetyl-D-galactosamine pH 8.0, 45°C Streptococcus pneumoniae
37.23
-
D-galactose pH 8.0, 45°C Streptococcus pneumoniae
49.37
-
D-glucose pH 8.0, 45°C Streptococcus pneumoniae

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
37000
-
calculatd from cDNA Streptococcus pneumoniae

Organism

Organism UniProt Comment Textmining
Streptococcus pneumoniae
-
-
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
ATP + D-galactose
-
Streptococcus pneumoniae ADP + alpha-D-galactose 1-phosphate
-
?
ATP + D-glucose
-
Streptococcus pneumoniae ADP + alpha-D-glucose 1-phosphate
-
?
ATP + N-acetyl-D-galactosamine
-
Streptococcus pneumoniae ADP + N-acetyl-alpha-D-galactosamine 1-phosphate
-
?

Synonyms

Synonyms Comment Organism
galactokinase
-
Streptococcus pneumoniae
GalKSpe4
-
Streptococcus pneumoniae

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
45
-
-
Streptococcus pneumoniae

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
55
-
nearly inactive at 55°C Streptococcus pneumoniae

Turnover Number [1/s]

Turnover Number Minimum [1/s] Turnover Number Maximum [1/s] Substrate Comment Organism Structure
0.36
-
N-acetyl-D-galactosamine pH 8.0, 45°C Streptococcus pneumoniae
1.1
-
D-glucose pH 8.0, 45°C Streptococcus pneumoniae
2.61
-
D-galactose pH 8.0, 45°C Streptococcus pneumoniae

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
8
-
-
Streptococcus pneumoniae

pH Range

pH Minimum pH Maximum Comment Organism
3 11
-
Streptococcus pneumoniae

kcat/KM [mM/s]

kcat/KM Value [1/mMs-1] kcat/KM Value Maximum [1/mMs-1] Substrate Comment Organism Structure
0.022
-
N-acetyl-D-galactosamine pH 8.0, 45°C Streptococcus pneumoniae
0.023
-
D-glucose pH 8.0, 45°C Streptococcus pneumoniae
0.07
-
D-galactose pH 8.0, 45°C Streptococcus pneumoniae