ID 2.4.2.3 DE uridine phosphorylase. AN pyrimidine phosphorylase. AN UPase. AN UrdPase. CA phosphate + uridine = alpha-D-ribose 1-phosphate + uracil. 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. DR P12758, UDP_ECOLI ; P43770, UDP_HAEIN ; O08444, UDP_KLEAE ; DR P52671, UDP_KLEPN ; P19662, UDP_LACRH ; P0A1F7, UDP_SALTI ; DR P0A1F6, UDP_SALTY ; Q5JJC1, UDP_THEKO ; O83990, UDP_TREPA ; DR Q16831, UPP1_HUMAN ; P52624, UPP1_MOUSE ; O95045, UPP2_HUMAN ; DR Q8CGR7, UPP2_MOUSE ; G4VGI0, UPPA_SCHMA ; //