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 ;
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