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Literature summary for 2.5.1.54 extracted from

  • Ray, J.M.; Bauerle, R.
    Purification and properties of tryptophan-sensitive 3-deoxy-D-arabino-heptulosonate-7-phosphate synthase from Escherichia coli (1991), J. Bacteriol., 173, 1894-1901.
    View publication on PubMedView publication on EuropePMC

Cloned(Commentary)

Cloned (Comment) Organism
gene aroG, Phe-sensitive isozyme, overexpression in strain gene aroH, Trp-sensitive isozyme, overexpression in deficient strain AB3248 Escherichia coli

Inhibitors

Inhibitors Comment Organism Structure
1,10-phenanthroline activity is restored by Fe2+ or Zn2+ Escherichia coli
EDTA activity is restored by Fe2+ or Zn2+ Escherichia coli
Phe Phe-sensitive isozyme Escherichia coli

Metals/Ions

Metals/Ions Comment Organism Structure
Fe2+ stimulates Escherichia coli
Mn2+ stimulates Escherichia coli
additional information no effect by Ca2+, Co2+, Cu2+, Fe3+, Mg2+ Escherichia coli
Zn2+ stimulates Escherichia coli

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
39000
-
2 * 39000, recombinant Trp-sensitive isozyme, SDS-PAGE Escherichia coli
69000
-
gel filtration Escherichia coli

Organism

Organism UniProt Comment Textmining
Escherichia coli
-
tryptophan-sensitive isozyme
-

Purification (Commentary)

Purification (Comment) Organism
5-6fold to homogeneity Escherichia coli
recombinant from overexpressing strain Escherichia coli

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
13.1
-
-
Escherichia coli

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
phosphoenolpyruvate + D-erythrose 4-phosphate + H2O
-
Escherichia coli 2-dehydro-3-deoxy-D-arabino-heptonate 7-phosphate + phosphate
-
?

Subunits

Subunits Comment Organism
dimer 2 * 39000, recombinant Trp-sensitive isozyme, SDS-PAGE Escherichia coli

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
25
-
assay at Escherichia coli