Thymidine Kinase, Mitochondrial

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

**Definition:** Thymidine kinase 2, mitochondrial (265 aa, ~31 kDa) is encoded by the human TK2 gene. This protein is involved in mitochondrial pyrimidine metabolism.

**Synonyms:** - EC 2.7.1.21 - Mitochondrial Thymidine Kinase 2 - Mt-TK - TK2 - Thymidine Kinase 2