TK1 Antibody – Mouse Monoclonal

The protein encoded by this gene is a cytosolic enzyme that catalyzes the addition of a gamma-phosphate group to thymidine. This creates dTMP and is the first step in the biosynthesis of dTTP, which is one component required for DNA replication. The encoded protein, whose levels fluctuate depending on the cell cycle stage, can act as a low activity dimer or a high activity tetramer. High levels of this protein have been used as a biomarker for diagnosing and categorizing many types of cancers. [provided by RefSeq, Oct 2016]

TK: cytosolic thymidine kinase. Phosphorylated during mitosis. Its enzymatic activity is high in proliferating cells and peaks during the S-phase of the cell cycle; it is very low in resting cells.

Protein type: Nucleotide Metabolism - pyrimidine; EC 2.7.1.21; Xenobiotic Metabolism - drug metabolism - other enzymes; Kinase, other

Chromosomal Location of Human Ortholog: 17q23.2-q25.3

Cellular Component: cytosol

Molecular Function: identical protein binding; nucleoside kinase activity; zinc ion binding; thymidine kinase activity; ATP binding

Biological Process: response to nutrient levels; skeletal muscle cell proliferation; nucleobase, nucleoside and nucleotide metabolic process; response to toxin; liver development; fetal process involved in parturition; deoxyribonucleoside monophosphate biosynthetic process; protein homotetramerization; response to cortisol stimulus; pyrimidine base metabolic process; gut development; response to copper ion; nucleotide biosynthetic process; nucleobase, nucleoside, nucleotide and nucleic acid metabolic process; thymidine metabolic process; pyrimidine nucleoside salvage; phosphorylation