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Literature summary for 2.7.1.18 extracted from

  • Alpers, J.B.
    Phosphoribokinase from Pseudomonas saccharophila (1975), Methods Enzymol., 42, 120-123.
    View publication on PubMed

Inhibitors

Inhibitors Comment Organism Structure
ATP above 2 mM Pelomonas saccharophila
EDTA reversed by Mg2+ Pelomonas saccharophila
ribose 5-phosphate above 2 mM Pelomonas saccharophila

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
1
-
ATP cosubstrate: ribose 5-phosphate, pH 9.1, 37°C Pelomonas saccharophila
1
-
ribose 5-phosphate cosubstrate: ATP, pH 9.1, 37°C Pelomonas saccharophila

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
ATP + D-ribose 5-phosphate Pelomonas saccharophila
-
D-ribose 1,5-bisphosphate + ADP
-
?

Organism

Organism UniProt Comment Textmining
Pelomonas saccharophila
-
-
-

Purification (Commentary)

Purification (Comment) Organism
-
Pelomonas saccharophila

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
9.86
-
-
Pelomonas saccharophila

Storage Stability

Storage Stability Organism
-56°C, 33 mM sodium phosphate buffer, pH 7.0, 6 months, 25% loss of activity Pelomonas saccharophila

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
ATP + D-ribose 5-phosphate
-
Pelomonas saccharophila D-ribose 1,5-bisphosphate + ADP
-
?
ATP + D-ribose 5-phosphate adenosine tetraphosphate can substitute for ATP with 25% residual activity Pelomonas saccharophila D-ribose 1,5-bisphosphate + ADP
-
?
additional information no substrates: ribose 1-phosphate, glucose 6-phosphate, glucose 1-phosphate, ITP, UTP, ADP, 3',5'-cAMP Pelomonas saccharophila ?
-
?

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
9.1
-
-
Pelomonas saccharophila