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Literature summary for 2.7.1.68 extracted from

  • Moritz, A.; Westerman, J.; De Graan, P.N.E.; Wirtz, K.W.A.
    Phosphatidylinositol 4-kinase and phosphatidylinositol-4-phosphate 5-kinase from bovine brain membranes (1992), Methods Enzymol., 209, 202-211.
    View publication on PubMed

General Stability

General Stability Organism
sucrose and PEG 20000 in the assay medium are required to stabilize the enzyme during phosphorylation reaction Bos taurus

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.005
-
1-phosphatidyl-1D-myo-inositol 4-phosphate
-
Bos taurus
0.019
-
ATP
-
Bos taurus

Localization

Localization Comment Organism GeneOntology No. Textmining
membrane
-
Bos taurus 16020
-

Organism

Organism UniProt Comment Textmining
Bos taurus
-
-
-

Purification (Commentary)

Purification (Comment) Organism
-
Bos taurus

Source Tissue

Source Tissue Comment Organism Textmining
brain
-
Bos taurus
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
0.171
-
-
Bos taurus

Storage Stability

Storage Stability Organism
-20°C, 50 MM Tris-HCl, pH 8.0, 1 mM EDTA, 0.25 M sucrose, 0.3% v/v 2-mercaptoethanol, 0.1% Triton X-100, 0.1% PEG 20000, 0.05 mM ATP, 0.1 mM PMSF, stable for several months Bos taurus

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
ATP + 1-phosphatidyl-1D-myo-inositol 4-phosphate
-
Bos taurus ADP + 1-phosphatidyl-1D-myo-inositol 4,5-bisphosphate
-
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