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Literature summary for 2.4.2.19 extracted from

  • Iwai, K.; Shibata, K.; Taguchi, H.; Itakura, T.
    Properties of crystalline quinolinate phosphoribosyltransferase from Alcaligenes eutrophus nov. Subsp. Quinolinicus (1979), Agric. Biol. Chem., 43, 345-350.
No PubMed abstract available

Inhibitors

Inhibitors Comment Organism Structure
H2PO4-
-
Cupriavidus necator

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.111
-
5-phospho-alpha-D-ribose 1-diphosphate
-
Cupriavidus necator
0.133
-
quinolinate
-
Cupriavidus necator

Metals/Ions

Metals/Ions Comment Organism Structure
Mg2+ absolute requirement for a divalent metal ion, Mg2+ is most effective, optimal activity at 1.5 mM Cupriavidus necator
Mn2+ at 1 mM, 80% of the activation with Mg2+ Cupriavidus necator

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
27500
-
8 * 27500, SDS-PAGE Cupriavidus necator
210000
-
gel filtration Cupriavidus necator

Organism

Organism UniProt Comment Textmining
Cupriavidus necator
-
nov. subsp. quinolinicus
-

Reaction

Reaction Comment Organism Reaction ID
beta-nicotinate D-ribonucleotide + diphosphate + CO2 = pyridine-2,3-dicarboxylate + 5-phospho-alpha-D-ribose 1-diphosphate formation of a ternary complex comprising the enzyme, quinolinate and 5-phosphoribosyl-1-diphosphate Cupriavidus necator

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
pyridine-2,3-dicarboxylate + 5-phospho-alpha-D-ribose 1-diphosphate
-
Cupriavidus necator nicotinate D-ribonucleotide + diphosphate + CO2
-
?

Subunits

Subunits Comment Organism
octamer 8 * 27500, SDS-PAGE Cupriavidus necator

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
60
-
-
Cupriavidus necator

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
8.5 9
-
Cupriavidus necator