ID 2.4.2.3 DE Uridine phosphorylase. AN Pyrimidine phosphorylase. AN UPase. AN UrdPase. CA Uridine + phosphate = uracil + alpha-D-ribose 1-phosphate. CC -!- The enzyme participates the the pathways of pyrimidine CC ribonucleosides degradation and salvage. CC -!- The mammalian enzyme also accepts 2'-deoxyuridine. CC -!- Formerly EC 2.4.2.23. PR PROSITE; PDOC00946; DR P12758, UDP_ECOLI ; P43770, UDP_HAEIN ; O08444, UDP_KLEAE ; DR P52671, UDP_KLEPN ; P19662, UDP_LACRH ; P0A1F7, UDP_SALTI ; DR P0A1F6, UDP_SALTY ; O83990, UDP_TREPA ; Q16831, UPP1_HUMAN ; DR P52624, UPP1_MOUSE ; O95045, UPP2_HUMAN ; Q8CGR7, UPP2_MOUSE ; DR G4VGI0, UPPA_SCHMA ; //