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Literature summary 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

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

Inhibitors

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

Localization

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

Metals/Ions

EC Number Metals/Ions Comment Organism Structure
3.1.4.11 Ca2+ enzyme requires a bivalent cation, Ca2+ being the most effective activator Apium graveolens Dulce Group
3.1.4.11 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
3.1.4.11 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
3.1.4.11 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

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

Source Tissue

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

Specific Activity [micromol/min/mg]

EC Number Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
3.1.4.11 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)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
3.1.4.11 additional information no detectable activity against phosphatidylcholine or phosphatidylethanolamine Apium graveolens Dulce Group ?
-
 ?
3.1.4.11 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

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

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
3.1.4.11 5.9 6.6
-
 Apium graveolens Dulce Group