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Literature summary for 2.7.7.15 extracted from

  • Wang, X.; Moore, T.S.
    Partial purification and characterization of CTP:cholinephosphate cytidylyltransferase from castor bean endosperm (1989), Arch. Biochem. Biophys., 274, 338-347.
    View publication on PubMed

Inhibitors

Inhibitors Comment Organism Structure
ATP extent of inhibition is dependent on preincubation time, temperature and Mg2+ and Ca2+ concentration Ricinus communis
phosphate 50% loss of activity at 10 mM Ricinus communis

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.37
-
CTP pH 7.6, 30°C Ricinus communis
1.1
-
choline phosphate pH 7.6, 30°C Ricinus communis

Metals/Ions

Metals/Ions Comment Organism Structure
Ca2+
-
Ricinus communis
Mg2+ required Ricinus communis
Mg2+ optimum concentration around 2 mM Ricinus communis

Organism

Organism UniProt Comment Textmining
Ricinus communis
-
castor bean, L- var. Hale
-

Purification (Commentary)

Purification (Comment) Organism
-
Ricinus communis

Source Tissue

Source Tissue Comment Organism Textmining
endosperm postgermination Ricinus communis
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
0.6024
-
-
Ricinus communis

Storage Stability

Storage Stability Organism
-20°C, stable for more than 1 month in presence of 20% glycerol Ricinus communis
4°C, 30% loss of activity after 1 week Ricinus communis

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
CTP + choline phosphate
-
Ricinus communis diphosphate + CDPcholine
-
?

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
35
-
-
Ricinus communis

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
6.3
-
assay at Ricinus communis
7 9
-
Ricinus communis