FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term uridine phosphorylase activity ID (Ontology) GO:0004850 (Gene Ontology)
Definition Catalysis of the reaction: uridine + phosphate = uracil + alpha-D-ribose 1-phosphate.[ EC:2 ]
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Genes (FBgn)GO_MOLECULAR_FUNCTION
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 uridine phosphorylase activity (all annotations which use CV term, excluding "NOT" statements)
     enables | uridine phosphorylase activity       --
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  pentosyltransferase activity
   |__pyrimidine-nucleoside phosphorylase activity
       |__uridine phosphorylase activity  4 rec.
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Is a pyrimidine-nucleoside phosphorylase activity
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Synonyms
  • "pyrimidine phosphorylase activity" BROAD[ EC:2 ]
    "UPase activity" RELATED[ EC:2 ]
    "UPH" RELATED[ EC:2 ]
    "UrdPase activity" RELATED[ EC:2 ]
    "uridine:phosphate alpha-D-ribosyltransferase activity" RELATED[ EC:2 ]
Secondary IDs
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EC:2.4.2.3
MetaCyc:URPHOS-RXN
Reactome:R-HSA-74372 "uracil + (deoxy)ribose 1-phosphate <=> (deoxy)uridine + orthophosphate [UPP]"
Reactome:R-HSA-74376 "(deoxy)uridine + orthophosphate <=> uracil + (deoxy)ribose 1-phosphate (UPP)"
RHEA:24388