Uridine Phosphorylase 2 (UPP2)

Uridine Phosphorylase 2 belongs to the PNP/UDP phosphorylase family.Predominantly expressed in kidney.Catalyzes the reversible phosphorylytic cleavage of uridine and deoxyuridine to uracil and ribose- or deoxyribose-1- phosphate. The produced molecules are then utilized as carbon and energy sources or in the rescue of pyrimidine bases for nucleotide synthesis. Shows substrate specificity and accept uridine, deoxyuridine, and thymidine as well as the two pyrimidine nucleoside analogs 5-fluorouridine and 5-fluoro-2(""")-deoxyuridine as substrates.Pyrimidine metabolism; UMP biosynthesis via salvage pathway; uracil from uridine.This enzyme belongs to the family of glycosyltransferases, specifically the pentosyltransferases. The systematic name of this enzyme class is uridine:phosphate alpha-D-ribosyltransferase.