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Literature summary for 3.2.2.3 extracted from

  • Jung, B.; Hoffmann, C.; Moehlmann, T.
    Arabidopsis nucleoside hydrolases involved in intracellular and extracellular degradation of purines (2011), Plant J., 65, 703-711.
    View publication on PubMed
Search for more literature for 3.2.2.3

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.44
-
 5-methyluridine at 30°C, pH not specified in the publication Arabidopsis thaliana
0.7
-
 adenosine at 30°C, pH not specified in the publication Arabidopsis thaliana
0.8
-
 uridine at 30°C, pH not specified in the publication Arabidopsis thaliana
1.4
-
 Inosine at 30°C, pH not specified in the publication Arabidopsis thaliana
1.69
-
 Xanthosine at 30°C, pH not specified in the publication Arabidopsis thaliana

Organism

Organism UniProt Comment Textmining
Arabidopsis thaliana
-
 ecotype Columbia
-

Source Tissue

Source Tissue Comment Organism Textmining
leaf
-
 Arabidopsis thaliana
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
5-methyluridine + H2O
-
 Arabidopsis thaliana D-ribose + 5-methyluracil
-
 ?
adenosine + H2O
-
 Arabidopsis thaliana D-ribose + adenine
-
 ?
inosine + H2O
-
 Arabidopsis thaliana D-ribose + hypoxanthine
-
 ?
isopentenyladenine riboside + H2O
-
 Arabidopsis thaliana D-ribose + N6-isopentenyladenine
-
 ?
uridine + H2O isoform NSH1 shows highest hydrolysis capacity for uridine Arabidopsis thaliana D-ribose + uracil
-
 ?
xanthosine + H2O
-
 Arabidopsis thaliana D-ribose + xanthine
-
 ?

Synonyms

Synonyms Comment Organism
NSH1 isoform, former designation URH1 Arabidopsis thaliana

General Information

General Information Comment Organism
malfunction a knockout mutant for isoform NSH1 shows symptoms of accelerated senescence, accompanied by marked accumulation of uridine and xanthosine under conditions of prolonged darkness Arabidopsis thaliana
physiological function isoform NSH1 represents the leading activity in purine and pyrimidine breakdown in a cell Arabidopsis thaliana