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Literature summary for 2.2.1.1 extracted from

  • Sprenger, G.A.; Schoerken, U.; Sprenger, G.; Sahm, H.
    Transketolase A of Escherichia coli K12. Purification and properties of the enzyme from recombinant strains (1995), Eur. J. Biochem., 230, 525-532.
    View publication on PubMed

Inhibitors

Inhibitors Comment Organism Structure
D-arabinose 5-phosphate competitive inhibition Escherichia coli
EDTA
-
Escherichia coli

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.09
-
D-erythrose 4-phosphate
-
Escherichia coli
0.16
-
D-xylulose 5-phosphate
-
Escherichia coli
1.1
-
fructose 6-phosphate
-
Escherichia coli
1.4
-
D-ribose 5-phosphate
-
Escherichia coli
2.1
-
D,L-glyceraldehyde 3-phosphate
-
Escherichia coli
4
-
sedoheptulose 7-phosphate
-
Escherichia coli
10
-
D,L-glyceraldehyde
-
Escherichia coli
14
-
glycolaldehyde
-
Escherichia coli
18
-
Hydroxypyruvate
-
Escherichia coli
31
-
formaldehyde
-
Escherichia coli
150
-
D-erythrose
-
Escherichia coli

Metals/Ions

Metals/Ions Comment Organism Structure
Ca2+
-
Escherichia coli
Mg2+
-
Escherichia coli

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
73000
-
alpha2, 2 * 73000, SDS-PAGE Escherichia coli
145000
-
gel filtration Escherichia coli

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
D-xylulose 5-phosphate + D-ribose 5-phosphate Escherichia coli
-
sedoheptulose 7-phosphate + D-glyceraldehyde 3-phosphate
-
?

Organism

Organism UniProt Comment Textmining
Escherichia coli
-
K12
-

Purification (Commentary)

Purification (Comment) Organism
-
Escherichia coli

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
50.4
-
-
Escherichia coli

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
D-erythrose + ?
-
Escherichia coli ?
-
?
D-erythrose 4-phosphate + ?
-
Escherichia coli ?
-
?
D-xylulose 5-phosphate + D-ribose 5-phosphate
-
Escherichia coli sedoheptulose 7-phosphate + D-glyceraldehyde 3-phosphate
-
?
D-xylulose 5-phosphate + D-ribose 5-phosphate
-
Escherichia coli sedoheptulose 7-phosphate + D-glyceraldehyde 3-phosphate
-
r
DL-glyceraldehyde + ?
-
Escherichia coli ?
-
?
DL-glyceraldehyde 3-phosphate + ?
-
Escherichia coli ?
-
?
formaldehyde + ?
-
Escherichia coli ?
-
?
fructose 6-phosphate + ?
-
Escherichia coli ?
-
?
glycolaldehyde + ?
-
Escherichia coli ?
-
?
hydroxypyruvate + ?
-
Escherichia coli ?
-
?
sedoheptulose 7-phosphate + ?
-
Escherichia coli ?
-
?

Subunits

Subunits Comment Organism
dimer alpha2, 2 * 73000, SDS-PAGE Escherichia coli

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
30
-
assay at Escherichia coli

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
8 8.5
-
Escherichia coli

Cofactor

Cofactor Comment Organism Structure
thiamine diphosphate
-
Escherichia coli