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Literature summary for 2.7.7.9 extracted from

  • Nakano, K.; Omura, Y.; Tagaya, M.; Fukui, T.
    UDP-glucose pyrophosphorylase from potato tuber: purification and characterization (1989), J. Biochem., 106, 528-532.
    View publication on PubMed

Activating Compound

Activating Compound Comment Organism Structure
additional information no activation by 3-phosphoglycerate Solanum tuberosum

General Stability

General Stability Organism
no reducing agent required for stability Solanum tuberosum
stable to dilution to the order of mg/l Solanum tuberosum

Inhibitors

Inhibitors Comment Organism Structure
alpha-D-glucose 1-phosphate product inhibition Solanum tuberosum
UTP free form Solanum tuberosum

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.1 0.2 UTP pH 8.0, 30°C Solanum tuberosum
0.11 0.13 diphosphate pH 8.0, 30°C Solanum tuberosum
0.12 0.18 UDP-glucose pH 8.0, 30°C Solanum tuberosum
0.14 0.18 alpha-D-glucose 1-phosphate pH 8.0, 30°C Solanum tuberosum

Metals/Ions

Metals/Ions Comment Organism Structure
Mg2+ requirement Solanum tuberosum
Mg2+ MgUTP is the actual substrate Solanum tuberosum
Mg2+ Mg-diphosphate is the actual substrate Solanum tuberosum

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
47000
-
gel filtration Solanum tuberosum
53000
-
1 * 53000, SDS-PAGE Solanum tuberosum

Organism

Organism UniProt Comment Textmining
Solanum tuberosum
-
-
-

Purification (Commentary)

Purification (Comment) Organism
243fold to near homogeneity Solanum tuberosum

Source Tissue

Source Tissue Comment Organism Textmining
tuber
-
Solanum tuberosum
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
899
-
purified enzyme Solanum tuberosum

Storage Stability

Storage Stability Organism
4°C, Tris-HCl buffer, pH 7.5, several months Solanum tuberosum

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
additional information no activity with ADP-glucose Solanum tuberosum ?
-
?
UTP + alpha-D-glucose 1-phosphate
-
Solanum tuberosum diphosphate + UDP-glucose
-
r

Subunits

Subunits Comment Organism
monomer 1 * 53000, SDS-PAGE Solanum tuberosum

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
30
-
assay at Solanum tuberosum