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Literature summary extracted from

  • Combes, A.; Lefleuriel, J.; Le Floc'h, F.
    the inosine-guanosine kinase activity of mitochondria in tubers of Jerusalem artichoke (1989), Plant Physiol. Biochem., 27, 729-736.
No PubMed abstract available

Activating Compound

EC Number Activating Compound Comment Organism Structure
2.7.1.73 K+ increases activity, optimum concentration: 40 mM Helianthus tuberosus
2.7.1.73 Mg2+ reaction is dependent on presence of divalent cation Helianthus tuberosus

General Stability

EC Number General Stability Organism
2.7.1.73 very low stability Helianthus tuberosus

Inhibitors

EC Number Inhibitors Comment Organism Structure
2.7.1.73 guanosine inhibits phosphorylation of inosine Helianthus tuberosus
2.7.1.73 Inosine inhibits phosphorylation of guanosine Helianthus tuberosus

KM Value [mM]

EC Number KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
2.7.1.73 0.014
-
 guanosine
-
 Helianthus tuberosus
2.7.1.73 0.07
-
 Inosine
-
 Helianthus tuberosus
2.7.1.73 1.45
-
 ATP ATP in form of MgATP2- Helianthus tuberosus

Localization

EC Number Localization Comment Organism GeneOntology No. Textmining
2.7.1.73 mitochondrion intermembrane space Helianthus tuberosus 5739
-

Organism

EC Number Organism UniProt Comment Textmining
2.7.1.73 Helianthus tuberosus
-
-
-

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
2.7.1.73 ATP + guanosine
-
 Helianthus tuberosus ADP + GMP
-
 ?
2.7.1.73 ATP + inosine
-
 Helianthus tuberosus ADP + 5'-IMP
-
 ?
2.7.1.73 ATP + inosine
-
 Helianthus tuberosus ADP + IMP
-
 ?

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
2.7.1.73 6.8 7.6
-
 Helianthus tuberosus