ORENZA : a database of ORphan ENZyme Activities

ORphan ENZyme ActivitiesSorted by :
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EC 1.1.3.28 is Orphan !
Common name :Nucleoside oxidase

Systematic name :Nucleoside:oxygen 5'-oxidoreductase

Other names :L-2-hydroxyphytanate:oxygen 2-oxidoreductase
Comments :Other purine and pyrimidine nucleosides (as well as 2'-deoxynucleosides) are substrates, but ribose and nucleotides are not substrates. The overall reaction takes place in two separate steps, with the 5'-dehydro nucleoside being released from the enzyme to serve as substrate for the second reaction. This enzyme differs from EC 1.1.3.39, nucleoside oxidase (H(2)O(2)-forming), as it produces water rather than hydrogen peroxide. Other purine and pyrimidine nucleosides (as well as 2'-deoxynucleosides) are substrates, but ribose and nucleotides are not substrates. The overall reaction takes place in two separate steps: (1) 2 inosine + O(2) = 2 5'-dehydroinosine + 2 H(2)O. (2) 2 5'-dehydroinosine + O(2) = 2 9-riburonosylhypoxanthine + 2 H(2)O. The 5'-dehydro nucleoside is being released from the enzyme to serve as substrate for the second reaction. Differs from EC 1.1.3.39 as it produces water rather than hydrogen peroxide.

Created :EC 1.1.3.28 created 1992, modified 2001

BRENDA organisms :Stenotrophomonas maltophilia

Swiss-ProtNo protein sequences are associated with EC 1.1.3.28 in Swiss-Prot

TrEMBLNo protein sequences are associated with EC 1.1.3.28 in TrEMBL

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for EC 1.1.3.28.

Links to other databases
NC-IUBMB, INTENZ, ENZYME, PDB, BRENDA, KEGG, BIOCYC, PubMed,NCBI-Entrez

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