Thymidine Kinase, Cytosolic

**Semantic type:** Amino Acid, Peptide, or Protein|Enzyme

**Definition:** Thymidine kinase, cytosolic (234 aa, ~25 kDa) is encoded by the human TK1 gene. This protein plays a role in pyrimidine metabolism.

**Synonyms:** - Cytosolic Thymidine Kinase - EC 2.7.1.21 - Soluble Thymidine Kinase 1 - TK1 - Thymidine Kinase 1