Thiamine diphosphokinase

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In enzymology, a thiamine diphosphokinase (EC is an enzyme that catalyzes the chemical reaction

ATP + thiamine AMP + thiamine diphosphate

Thus, the two substrates of this enzyme are ATP and thiamine, whereas its two products are AMP and thiamine diphosphate.

This enzyme belongs to the family of transferases, specifically those transferring two phosphorus-containing groups (diphosphotransferases). The systematic name of this enzyme class is ATP:thiamine diphosphotransferase. Other names in common use include thiamin kinase, thiamine pyrophosphokinase, ATP:thiamin pyrophosphotransferase, thiamin pyrophosphokinase, thiamin pyrophosphotransferase, thiaminokinase, thiamin:ATP pyrophosphotransferase, and TPTase. This enzyme participates in thiamine metabolism.

Structural studies

As of late 2007, 6 structures have been solved for this class of enzymes, with PDB accession codes 1IG0, 1IG3, 2F17, 2G9Z, 2HH9, and 2OMK.


  • IUBMB entry for
  • BRENDA references for (Recommended.)
  • PubMed references for
  • PubMed Central references for
  • Google Scholar references for
  • Leuthardt F and Nielsen H (1952). "Phosphorylation biologique de la thiamine". Helv. Chim. Acta. 35: 1196&ndash, 1209.
  • Shimazono N, Mano Y, Tanaka R and Kajiro Y (Tokyo). "Mechanism of transpyrophosphorylation with thiamine pyrophosphokinase". J. Biochem.: 959&ndash, 961. Check date values in: |date= (help)
  • Steyn-Parve EP (1952). "Partial purification and properties of thiaminokinase from yeast". Biochim. Biophys. Acta. 8: 310&ndash, 324.

External links

The CAS registry number for this enzyme class is 9026-24-8.

Gene Ontology (GO) codes