TYMS Human Recombinant Protein

Thymidylate synthase catalyzes the methylation of deoxyuridylate to deoxythymidylate using 5,10-methylenetetrahydrofolate (methylene-THF) as a cofactor. This function maintains the dTMP (thymidine-5-prime monophosphate) pool critical for DNA replication and repair. The enzyme has been of interest as a target for cancer chemotherapeutic agents. It is considered to be the primary site of action for 5-fluorouracil, 5-fluoro-2-prime-deoxyuridine, and some folate analogs. Expression of this gene and that of a naturally occuring antisense transcript rTSalpha (GeneID:55556) vary inversely when cell-growth progresses from late-log to plateau phase. [provided by RefSeq, Jul 2008]

TYMS: an enzyme in the thymidylate synthase family. Polymorphisms serve as prognostic markers for determining modality of treatment in certain cancers. Genotyping helps predict toxicity to 5-FU-based chemotherapy in patients with colorectal cancer and the response to platinum-based chemotherapy in advanced NSCLC. A common polymorphism is a determinant of red blood cell folate and homocysteine concentrations. Homodimer.

Protein type: Nucleotide Metabolism - pyrimidine; Cofactor and Vitamin Metabolism - one carbon pool by folate; DNA repair, damage; EC 2.1.1.45; Mitochondrial; Methyltransferase

Chromosomal Location of Human Ortholog: 18p11.32

Cellular Component: nucleoplasm; mitochondrion; mitochondrial matrix; cytoplasm; mitochondrial inner membrane; nucleolus; nucleus; cytosol

Molecular Function: mRNA binding; protein homodimerization activity; nucleotide binding; drug binding; cofactor binding; thymidylate synthase activity; folic acid binding

Biological Process: immortalization of host cell by virus; methylation; tetrahydrofolate metabolic process; circadian rhythm; uracil metabolic process; developmental growth; response to organophosphorus; response to toxin; response to glucocorticoid stimulus; dTTP biosynthetic process; response to vitamin A; pyrimidine base metabolic process; response to folic acid; nucleobase, nucleoside, nucleotide and nucleic acid metabolic process; aging; response to drug; organ regeneration; nucleobase, nucleoside and nucleotide metabolic process; dTMP biosynthetic process; deoxyribonucleoside monophosphate biosynthetic process; G1/S-specific transcription in mitotic cell cycle; response to ethanol; response to cytokine stimulus; cartilage development; pyrimidine nucleoside biosynthetic process; dUMP metabolic process; mitotic cell cycle; response to progesterone stimulus; G1/S transition of mitotic cell cycle