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Background
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The 2 known types of pyrimidine nucleoside phosphorylases, uridine phosphorylase (UP, EC 2.4.2.3) and thymidine phosphorylase (TP, EC 2.4.2.4), in the presence of orthophosphate, catalyze the reversible phosphorolysis of uridine and thymidine or deoxyuridine, respectively, to free bases and ribose-1-phosphate or deoxyribose-1-phosphate. Pyrimidine nucleoside phosphorylases can add ribose or deoxyribose to pyrimidine bases to form nucleosides that can be incorporated into RNA or DNA.
Alias Symbols: UP, UPP, UPASE, UDRPASE
Protein Interaction Partner: CTDP1, YRDC, WDR45B, WBP2, UCK2, UBE2D1, MPST, UBC, EBNA-LP, VIM,
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