NCIt definition : Thymidylate synthetase protein (312 aa, 36 kDa) is encoded by the human TYMS gene.
The protein is a conserved transferase enzyme that catalyzes methylene tetrahydrofolate
(MTHF)/dUMP conversion to dihydrofolate/dTMP in thymidine triphosphate/deoxyribonucleotide
biosynthesis. Thymidylate synthetase competes with the methylene tetrahydrofolate
receptor for MTHF and maintains the dTMP pool for DNA replication and repair.;
Alternative definition : NCI-GLOSS: A protein involved in making and repairing DNA (molecules inside cells
that carry genetic information and pass it on from parent to child). High levels of
thymidylate synthase may be involved in how certain types of cancer form and respond
to treatment.;