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Literature summary extracted from

  • Kombrink, E.; Kruger, N.J.
    Inhibition by metabolic intermediates of pyrophosphate:D-fructose 6-phosphate phosphotransferase from germinating castor bean endosperm (1984), Z. Pflanzenphysiol., 114, 443-453.
No PubMed abstract available

Activating Compound

EC Number Activating Compound Comment Organism Structure
2.7.1.90 D-fructose 2,6-bisphosphate
-
 Ricinus communis
2.7.1.90 D-glucose 1-phosphate no activation Ricinus communis
2.7.1.90 additional information no activation by glucose 6-phosphate, UDPglucose, glucose, D-fructose, sucrose, pyruvate, malate, succinate or glycolate Ricinus communis

Inhibitors

EC Number Inhibitors Comment Organism Structure
2.7.1.90 3-phospho-D-glycerate predominantly a competitive inhibitor Ricinus communis
2.7.1.90 3-phosphoglycerate
-
 Ricinus communis
2.7.1.90 ADP
-
 Ricinus communis
2.7.1.90 AMP weak Ricinus communis
2.7.1.90 ATP
-
 Ricinus communis
2.7.1.90 citrate not relieved by Mg2+ Ricinus communis
2.7.1.90 D-glucose 6-phosphate no inhibition Ricinus communis
2.7.1.90 malate no inhibition Ricinus communis
2.7.1.90 additional information no inhibition by glucose, glucose 1-phosphate, sucrose, D-fructose, glycolate, succinate, UDPglucose; no inhibition by pyruvate, malate Ricinus communis
2.7.1.90 nucleotides
-
 Ricinus communis
2.7.1.90 phosphate
-
 Ricinus communis
2.7.1.90 phosphoenolpyruvate
-
 Ricinus communis
2.7.1.90 Phosphoglycolate
-
 Ricinus communis

KM Value [mM]

EC Number KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
2.7.1.90 additional information
-
 additional information
-
 Ricinus communis

Metals/Ions

EC Number Metals/Ions Comment Organism Structure
2.7.1.90 Mg2+ requirement Ricinus communis

Natural Substrates/ Products (Substrates)

EC Number Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
2.7.1.90 diphosphate + D-fructose 6-phosphate Ricinus communis
-
 phosphate + D-fructose 1,6-bisphosphate
-
 ?

Organism

EC Number Organism UniProt Comment Textmining
2.7.1.90 Ricinus communis
-
 var. Hale
-

Purification (Commentary)

EC Number Purification (Comment) Organism
2.7.1.90 over 500fold Ricinus communis
2.7.1.90 partial Ricinus communis

Source Tissue

EC Number Source Tissue Comment Organism Textmining
2.7.1.90 endosperm
-
 Ricinus communis
-
2.7.1.90 seed germinating Ricinus communis
-

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
2.7.1.90 diphosphate + D-fructose 6-phosphate
-
 Ricinus communis phosphate + D-fructose 1,6-bisphosphate
-
 ?
2.7.1.90 diphosphate + D-fructose 6-phosphate specific for diphosphate as phosphor donor Ricinus communis phosphate + D-fructose 1,6-bisphosphate
-
 ?

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
2.7.1.90 7.5
-
 assay at Ricinus communis

Ki Value [mM]

EC Number Ki Value [mM] Ki Value maximum [mM] Inhibitor Comment Organism Structure
2.7.1.90 0.25
-
 3-phosphoglycerate pH 7.5 Ricinus communis