Pyridoxal kinase

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In enzymology, a pyridoxal kinase (EC is an enzyme that catalyzes the chemical reaction

ATP + pyridoxal ADP + pyridoxal 5'-phosphate

Thus, the two substrates of this enzyme are ATP and pyridoxal, whereas its two products are ADP and pyridoxal 5'-phosphate.

This enzyme belongs to the family of transferases, specifically those transferring phosphorus-containing groups (phosphotransferases) with an alcohol group as acceptor. The systematic name of this enzyme class is ATP:pyridoxal 5'-phosphotransferase. Other names in common use include pyridoxal kinase (phosphorylating), pyridoxal 5-phosphate-kinase, pyridoxal phosphokinase, and pyridoxine kinase. This enzyme participates in vitamin b6 metabolism.

Structural studies

As of late 2007, 15 structures have been solved for this class of enzymes, with PDB accession codes 1LHP, 1LHR, 1RFT, 1RFU, 1RFV, 1TD2, 1VI9, 1YGJ, 1YGK, 1YHJ, 2AJP, 2DDM, 2DDO, 2DDW, and 2F7K.


  • IUBMB entry for
  • BRENDA references for (Recommended.)
  • PubMed references for
  • PubMed Central references for
  • Google Scholar references for
  • McCormick DB, Gregory ME and Snell EE (1961). "Pyridoxal phosphokinases. I. Assay, distribution, purification, and properties". J. Biol. Chem. 236: 2076&ndash, 2084.
  • Trufanov AF and Krisanova JA (6). "Biosynthesis of pyridoxal phosphate by liver sections of rat in vitro". Byull. Eksp. Biol. Med. 22: 40&ndash, 43. Check date values in: |date= (help)

External links

The CAS registry number for this enzyme class is 9026-42-0.

Gene Ontology (GO) codes