Lactaldehyde dehydrogenase

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In enzymology, a lactaldehyde dehydrogenase (EC is an enzyme that catalyzes the chemical reaction

(S)-lactaldehyde + NAD+ + H2O (S)-lactate + NADH + 2 H+

The 3 substrates of this enzyme are (S)-lactaldehyde, NAD+, and H2O, whereas its 3 products are (S)-lactate, NADH, and H+.

This enzyme belongs to the family of oxidoreductases, specifically those acting on the aldehyde or oxo group of donor with NAD+ or NADP+ as acceptor. The systematic name of this enzyme class is (S)-lactaldehyde:NAD+ oxidoreductase. Other names in common use include L-lactaldehyde:NAD+ oxidoreductase, and nicotinamide adenine dinucleotide (NAD+)-linked dehydrogenase. This enzyme participates in pyruvate metabolism.

Structural studies

As of late 2007, 4 structures have been solved for this class of enzymes, with PDB accession codes 2HG2, 2ILU, 2IMP, and 2OPX.


  • IUBMB entry for
  • BRENDA references for (Recommended.)
  • PubMed references for
  • PubMed Central references for
  • Google Scholar references for
  • Rembold H, Simmersbach F (1969). "Catabolism of pteridine cofactors. II. A specific pterin deaminase in rat liver". Biochim. Biophys. Acta. 184: 589&ndash, 96. PMID 5821022.
  • Sridhara S, Wu TT (1969). "Purification and properties of lactaldehyde dehydrogenase from Escherichia coli". J. Biol. Chem. 244: 5233&ndash, 8. PMID 4310089.

External links

The CAS registry number for this enzyme class is 37250-90-1.

Gene Ontology (GO) codes