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Literature summary for 2.7.1.19 extracted from

  • MacElroy, R.D.; Mack, H.M.; Johnson, E.J.
    Properties of phosphoribulokinase from Thiobacillus neapolitanus (1972), J. Bacteriol., 112, 532-538.
    View publication on PubMedView publication on EuropePMC

Activating Compound

Activating Compound Comment Organism Structure
alpha-glycerophosphate activation Halothiobacillus neapolitanus
D-glucose 6-phosphate activation Halothiobacillus neapolitanus
glyceraldehyde 3-phosphate activation Halothiobacillus neapolitanus
glycine activation Halothiobacillus neapolitanus

Inhibitors

Inhibitors Comment Organism Structure
phosphoenolpyruvate
-
Halothiobacillus neapolitanus

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.24
-
D-ribulose 5-phosphate 30°C Halothiobacillus neapolitanus
0.71
-
ATP 30°C Halothiobacillus neapolitanus

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
D-ribulose 5-phosphate + ATP Halothiobacillus neapolitanus
-
D-ribulose 1,5-diphosphate + ADP
-
?

Organism

Organism UniProt Comment Textmining
Halothiobacillus neapolitanus
-
-
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
50 125
-
Halothiobacillus neapolitanus

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
D-ribulose 5-phosphate + ATP
-
Halothiobacillus neapolitanus D-ribulose 1,5-diphosphate + ADP
-
?

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
7.9
-
-
Halothiobacillus neapolitanus
8.4
-
presence of phosphoenolpyruvate Halothiobacillus neapolitanus

pH Range

pH Minimum pH Maximum Comment Organism
7 9.2 no activity above and below Halothiobacillus neapolitanus

Cofactor

Cofactor Comment Organism Structure
NADH activation Halothiobacillus neapolitanus