Thymidylate kinase

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Thymidylate kinase

Thymidylate kinase (EC; dTMP kinase) catalyzes the phosphorylation of thymidine 5'-monophosphate (dTMP) to form thymidine 5'-diphosphate (dTDP) in the presence of ATP and magnesium:

ATP + thymidine 5'-phosphate ADP + thymidine 5'-diphosphate

Thymidylate kinase is a ubiquitous enzyme of about 25 Kd and is important in the dTTP synthesis pathway for DNA synthesis. The function of dTMP kinase in eukaryotes comes from the study of a cell cycle mutant, cdc8, in Saccharomyces cerevisiae. Structural and functional analyses suggest that the cDNA codes for authentic human dTMP kinase. The mRNA levels and enzyme activities corresponded to cell cycle progression and cell growth stages.[1]

Thymidylate kinase's subfamily is predicted thymidylate kinase, TKRP1. InterProIPR014505

Human protein DTYMK contains this domain.

See also[edit]


  1. ^ Li C, Huang SH, Tang A, Drisco B, Zhang SQ, Seeger R, Jong A (1994). "Human dTMP kinase: gene expression and enzymatic activity coinciding with cell cycle progression and cell growth". DNA Cell Biol. 13 (5): 461–471. doi:10.1089/dna.1994.13.461. PMID 8024690.
This article incorporates text from the public domain Pfam and InterPro: IPR000062