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Thymidylate Synthase (TS) converts deoxyuridine monophosphate (dUMP) to deoxythymidine monophosphate (dTMP), which is essential for DNA biosynthesis. TS is a critical target for the fluoropyrimidines, an important group of antineoplastic drugs that are widely used in the treatment of solid tumors. Both 5-FU and fluorodeoxyuridine are converted in tumor cells to FdUMP which inactivates TS by formation of a ternary covalent complex in the presence of the folate cofactor 5,10-methylenetetrahydrofolate. Expression of TS protein is associated with response to 5-fluorouracil (5-FU) in human colorectal, gastric, head and neck, and breast carcinomas.
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Protein Aliases: MGC88736; Thymidylate synthase; TS; TSase; tysy
Gene Aliases: HST422; OK/SW-cl.29; TMS; TS; TYMS
UniProt ID: (Human) P04818
Entrez Gene ID: (Human) 7298
Molecular Function: methyltransferase