Biology:Nucleoside oxidase

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Nucleoside oxidase
Identifiers
EC number1.1.3.28
CAS number82599-71-1
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum

Nucleoside oxidase (EC 1.1.3.28) is an enzyme with systematic name nucleoside:oxygen 5'-oxidoreductase.[1][2] This enzyme catalyses the following chemical reaction

inosine + O2 [math]\displaystyle{ \rightleftharpoons }[/math] 9-riburonosylhypoxanthine + H2O
(1a) 2 inosine + O2 [math]\displaystyle{ \rightleftharpoons }[/math] 2 5'-dehydroinosine + 2 H2O
(1b) 2 5'-dehydroinosine + O2 [math]\displaystyle{ \rightleftharpoons }[/math] 2 9-riburonosylhypoxanthine

This enzyme could use other purine and pyrimidine nucleosides (as well as 2'-deoxynucleosides) as substrates.

References

  1. "Purification and reaction of a new enzyme, nucleoside oxidase". Agric. Biol. Chem. 53: 1663–1669. 1989. doi:10.1271/bbb1961.53.1663. 
  2. "Properties of a new enzyme, nucleoside oxidase, from Pseudomonas maltophilia LB-86". Agric. Biol. Chem. 53: 1671–1677. 1989. doi:10.1271/bbb1961.53.1671. 

External links