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Literature summary for 2.7.7.9 extracted from

  • Smart, E.L.; Pharr, D.M.
    Separation and characteristics of galactose-1-phosphate and glucose-1-phosphate uridyltranferase from fruit peduncles of cucumber (1981), Planta, 153, 370-375.
    View publication on PubMed

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.32
-
UTP pH 7.2, 30°C Cucumis sativus
0.33
-
diphosphate pH 7.2, 30°C Cucumis sativus
0.33
-
diphosphate diphosphate in form of Mg-diphosphate Cucumis sativus
0.68 1 alpha-D-glucose 1-phosphate pH 7.2, 30°C Cucumis sativus

Organism

Organism UniProt Comment Textmining
Cucumis sativus
-
cv. Calypiso
-

Purification (Commentary)

Purification (Comment) Organism
partial Cucumis sativus

Source Tissue

Source Tissue Comment Organism Textmining
fruit peduncle
-
Cucumis sativus
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
3.9
-
partially purified enzyme Cucumis sativus

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
diphosphate + UDP-glucose
-
Cucumis sativus UTP + alpha-D-glucose 1-phosphate
-
r
UTP + alpha-D-galactose 1-phosphate no activity Cucumis sativus diphosphate + UDP-galactose
-
?
UTP + alpha-D-glucose 1-phosphate specific for alpha-D-glucose 1-phosphate Cucumis sativus diphosphate + UDP-glucose
-
r

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
56
-
2.5 min: 80% loss of activity in crude desalted extracts Cucumis sativus

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
6 7.5 broad Cucumis sativus