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Literature summary for 3.1.4.11 extracted from

  • Irvine, R.F.; Letcher, A.J.; Dawson, R.M.C.
    Phosphatidylinositol phosphodiesterase in higher plants (1980), Biochem. J., 192, 279-283.
    View publication on PubMedView publication on EuropePMC

Activating Compound

Activating Compound Comment Organism Structure
phosphatidic acid stimulating Apium graveolens Dulce Group

Inhibitors

Inhibitors Comment Organism Structure
EDTA addition of EDTA completely inhibits the activity Apium graveolens Dulce Group
additional information dialysis of the Apium graveolens var. dulce extract against water completely inhibits the activity Apium graveolens Dulce Group
phosphatidylcholine slightly inhibited, 30% at concentrations equimolar with phosphatidylinositol Apium graveolens Dulce Group

Localization

Localization Comment Organism GeneOntology No. Textmining
soluble
-
Apium graveolens Dulce Group
-
-

Metals/Ions

Metals/Ions Comment Organism Structure
Ca2+ enzyme requires a bivalent cation, Ca2+ being the most effective activator Apium graveolens Dulce Group
Mg2+ calcium, manganese, magnesium and zinc ions, in decreasing order of effectiveness, all partly restore the activity of the dialysed enzyme at a concentration of 2 mM. In each case 4 mM cation is less effective than 2 mM Apium graveolens Dulce Group
Mn2+ calcium, manganese, magnesium and zinc ions, in decreasing order of effectiveness, all partly restore the activity of the dialysed enzyme at a concentration of 2 mM. In each case 4 mM cation is less effective than 2 mM Apium graveolens Dulce Group
Zn2+ calcium, manganese, magnesium and zinc ions, in decreasing order of effectiveness, all partly restore the activity of the dialysed enzyme at a concentration of 2 mM. In each case 4 mM cation is less effective than 2 mM Apium graveolens Dulce Group

Organism

Organism UniProt Comment Textmining
Allium cepa
-
-
-
Apium graveolens Dulce Group
-
celery
-
Brassica oleracea var. botrytis
-
cauliflower
-
Narcissus pseudonarcissus
-
daffodil
-

Source Tissue

Source Tissue Comment Organism Textmining
flower tips of the flowers Brassica oleracea var. botrytis
-
leaf outer leaves Allium cepa
-
stem the elongating stem Narcissus pseudonarcissus
-
stem the lower regions of the stem Apium graveolens Dulce Group
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
additional information
-
at a substrate concentration of 50 microM the rate of hydrolysis is 0.3 nmol/h per mg of tissue (wet weight) at pH 6.6 Apium graveolens Dulce Group

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
additional information no detectable activity against phosphatidylcholine or phosphatidylethanolamine Apium graveolens Dulce Group ?
-
?
phosphatidylinositol + H2O
-
Apium graveolens Dulce Group diacylglycerol + 1D-myo-inositol 1-phosphate the lipoidal product of hydrolysis is diacylglycerol, the water-soluble products are 1D-myo-inositol 1,2-cyclic phosphate and 1D-myo-inositol 1-phosphate in the approximate proportions of 60% and 40%, respectively ?

Synonyms

Synonyms Comment Organism
phosphatidylinositol phosphodiesterase
-
Narcissus pseudonarcissus
phosphatidylinositol phosphodiesterase
-
Allium cepa
phosphatidylinositol phosphodiesterase
-
Brassica oleracea var. botrytis
phosphatidylinositol phosphodiesterase
-
Apium graveolens Dulce Group
phospholipase C-like phosphodiesterase
-
Apium graveolens Dulce Group

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
5.9 6.6
-
Apium graveolens Dulce Group