In enzymology, a glycolaldehyde dehydrogenase () is an enzyme that catalyzes the chemical reaction glycolaldehyde + NAD+ + H2O glycolate + NADH + H+ The 3 substrates of this enzyme are glycolaldehyde, NAD+, and H2O, whereas its 3 products are glycolate, 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 glycolaldehyde:NAD+ oxidoreductase. This enzyme is also called glycol aldehyde dehydrogenase. This enzyme participates in glyoxylate and dicarboxylate metabolism. Structural studies As of late 2007, 3 structures have been solved for this class of enzymes, with PDB accession codes , , and . References EC 1.2.1 NADH-dependent enzymes Enzymes of known structure