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Ligand 1-phosphatidyl-1D-myo-inositol 4-phosphate

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Basic Ligand Information

Molecular Structure
Picture of 1-phosphatidyl-1D-myo-inositol 4-phosphate (click for magnification)
Molecular Formula
BRENDA Name
InChIKey
Molfile
C17H30O16P2R2
1-phosphatidyl-1D-myo-inositol 4-phosphate
Synonyms:
1-phosphatidyl-1D-myo-inositol-4-phosphate, D-myo-phosphatidylinositol 4-phosphate, phosphatidylinositol-4-monophosphate, phosphatidylinositol-4-phosphate, phosphatidylinositol 4-monophosphate, phosphatidylinositol 4-phosphate, phosphatidylinositol phosphate

Related pathways

Pathway Source
Pathways
MetaCyc
3-phosphoinositide biosynthesis, 3-phosphoinositide degradation, D-myo-inositol (1,4,5)-trisphosphate biosynthesis

Roles as Enzyme Ligand

In Vivo Substrate in Enzyme-catalyzed Reactions (8 results)

EC NUMBER
PROVEN IN VIVO REACTION
REACTION DIAGRAM
LITERATURE
ENZYME 3D STRUCTURE
ATP + phosphatidylinositol-4-phosphate = ADP + phosphatidylinositol-3,4-bisphosphate
show the reaction diagram
-
ATP + 1-phosphatidyl-1D-myo-inositol 4-phosphate = ADP + 1-phosphatidyl-1D-myo-inositol 4,5-bisphosphate
show the reaction diagram
-
ATP + 1-phosphatidyl-1D-myo-inositol 4-phosphate = ADP + 1-phosphatidyl-1D-myo-inositol 3,4-bisphosphate
show the reaction diagram
-
ATP + 1-phosphatidyl-1D-myo-inositol 4-phosphate = ADP + 1-phosphatidyl-1D-myo-inositol 3,4-bisphosphate
show the reaction diagram
-
phosphatidylinositol 4-phosphate + H2O = phosphatidylinositol + phosphate
show the reaction diagram
-
1-phosphatidyl-1D-myo-inositol 4-phosphate + H2O = 1D-myo-inositol 1,4-bisphosphate + diacylglycerol
show the reaction diagram
-

In Vivo Product in Enzyme-catalyzed Reactions (7 results)

EC NUMBER
PROVEN IN VIVO REACTION
REACTION DIAGRAM
LITERATURE
ENZYME 3D STRUCTURE
ATP + 1-phosphatidyl-1D-myo-inositol = ADP + 1-phosphatidyl-1D-myo-inositol 4-phosphate
show the reaction diagram
-
-
1-(3-sn-phosphatidyl)-L-myo-inositol 4,5-bisphosphate + H2O = phosphatidylinositol 4-phosphate + phosphate
show the reaction diagram
646393, -
-
phosphatidylinositol-3,4-bisphosphate + H2O = phosphatidylinositol 4-phosphate + phosphate
show the reaction diagram
-
1-phosphatidyl-1D-myo-inositol 4,5-bisphosphate + H2O = 1-phosphatidyl-1D-myo-inositol 4-phosphate + phosphate
show the reaction diagram
-
-
1-phosphatidyl-1D-myo-inositol 3,4-bisphosphate + H2O = 1-phosphatidyl-1D-myo-inositol 4-phosphate + phosphate
show the reaction diagram
-
-

Substrate in Enzyme-catalyzed Reactions (22 results)

EC NUMBER
REACTION
REACTION DIAGRAM
LITERATURE
ENZYME 3D STRUCTURE
ATP + 1-phosphatidyl-1D-myo-inositol 4-phosphate = ADP + 1-phosphatidyl-1D-myo-inositol 4,5-bisphosphate
show the reaction diagram
-
ATP + 1-phosphatidyl-1D-myo-inositol 4-phosphate = ADP + 1-phosphatidyl-1D-myo-inositol 4,5-bisphosphate
show the reaction diagram
-
phosphatidylinositol 4-phosphate + H2O = phosphatidylinositol + phosphate
show the reaction diagram
-
phosphatidylinositol 4-phosphate + H2O = phosphatidylinositol + phosphate
show the reaction diagram
-
phosphatidylinositol 4-phosphate + H2O = ?
show the reaction diagram
-

Product in Enzyme-catalyzed Reactions (25 results)

EC NUMBER
REACTION
REACTION DIAGRAM
LITERATURE
ENZYME 3D STRUCTURE
phosphatidylinositol 3,4-bisphosphate + H2O = phosphatidylinositol 4-phosphate + phosphate
show the reaction diagram
-
1-phosphatidyl-1D-myo-inositol 3,4-bisphosphate + H2O = 1-phosphatidyl-1D-myo-inositol 4-phosphate + phosphate
show the reaction diagram
-
-

Activator in Enzyme-catalyzed Reactions (7 results)

EC NUMBER
COMMENTARY
LITERATURE
ENZYME 3D STRUCTURE
0.01 mM, isoform SphK2, 89% of initial activity, isoform SphK1, 175% of initial activity
-
phosphatidylinositol 4-phosphate increases myotubularin-related protein 6 activity in the presence of myotubularin-related protein 9 in 100% phosphatidylserine
-
activates
-
433% stimulation of activity at 1 mM
-
the enzyme is activated after the binding of phosphatidylinositol 4-phosphate and release of the autoinhibitory domain
-

Inhibitor in Enzyme-catalyzed Reactions (9 results)

EC NUMBER
COMMENTARY
LITERATURE
ENZYME 3D STRUCTURE
0.01 mM, isoform SphK2, 89% of initial activity, isoform SphK1, 175% of initial activity
-
inhibits Sec2p phosphorylation by Yck2p
-
55% inhibition at 1 mol%
-
inhibition at low micromolar concentrations
-

Enzyme Kinetic Parameters

KM Value (18 results)

EC NUMBER
KM VALUE [MM]
KM VALUE MAXIMUM [MM]
COMMENTARY
LITERATURE
0.025
-
pH 7.5, 30°C, in presence of phosphatidylserine
0.031
-
-

Ki Value (2 results)

EC NUMBER
KI VALUE [MM]
KI VALUE MAXIMUM [MM]
COMMENTARY
LITERATURE

References & Links

Links to other databases for 1-phosphatidyl-1D-myo-inositol 4-phosphate

EXTERNAL LINKS