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Literature summary for 2.7.1.48 extracted from

  • Fulchignoni-Lataud, M.C.; Tuilie, M.; Roux, J.M.
    Uridine--cytidine kinase from foetal and adult rat liver. Purification and study of some properties (1976), Eur. J. Biochem., 69, 217-222.
    View publication on PubMed

General Stability

General Stability Organism
ATP protects the enzyme completely for 30 min at 37°C in crude extract Rattus norvegicus

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.052
-
uridine 37°C, adult liver uridine kinase Rattus norvegicus
0.37
-
ATP 37°C, foetal liver uridine kinase Rattus norvegicus
0.37
-
ATP ATP in form of MgATP2- Rattus norvegicus
0.4
-
uridine 37°C, foetal liver uridine kinase Rattus norvegicus

Metals/Ions

Metals/Ions Comment Organism Structure
Mg2+ required for full activity Rattus norvegicus
Mg2+ optimal Mg2+ to ATP ratio at 12 mM ATP: 1.25 Rattus norvegicus

Organism

Organism UniProt Comment Textmining
Rattus norvegicus
-
2 forms of liver uridine kinase in foetus
-

Purification (Commentary)

Purification (Comment) Organism
streptomycin, ammonium sulfate, DEAE-cellulose Rattus norvegicus

Source Tissue

Source Tissue Comment Organism Textmining
liver foetal and adult Rattus norvegicus
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
0.06
-
uridine kinase from adult animal Rattus norvegicus
57.49
-
uridine kinase from foetal animal Rattus norvegicus

Storage Stability

Storage Stability Organism
-20°C, several weeks, no loss of activity Rattus norvegicus

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
ATP + uridine
-
Rattus norvegicus ADP + UMP
-
?

Temperature Stability [°C]

Temperature Stability Minimum [°C] Temperature Stability Maximum [°C] Comment Organism
additional information
-
ATP protects foetal liver uridine kinase completely for 30 min at 37°C in crude extract Rattus norvegicus
45
-
foetal liver uridine kinase, 50% loss of activity after 10 min, adult liver uridine kinase, no loss of activity after 10 min Rattus norvegicus