Name

TYMS Gene

thymidylate synthetase

Thymidylate synthase catalyzes the methylation of deoxyuridylate to deoxythymidylate using, 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 occurring antisense transcript, mitochondrial enolase superfamily member 1 (GeneID:55556), vary inversely when cell-growth progresses from late-log to plateau phase. Polymorphisms in this gene may be associated with etiology of neoplasia, including breast cancer, and response to chemotherapy. [provided by RefSeq, Aug 2017]

LOC100419610 Gene

thymidylate synthetase pseudogene

DTYMK Gene

deoxythymidylate kinase (thymidylate kinase)

Enables ATP binding activity and thymidylate kinase activity. Involved in dTDP biosynthetic process and thymidine biosynthetic process. Located in mitochondrion. [provided by Alliance of Genome Resources, Mar 2025]