In enzymology, a threonine aldolase (EC 188.8.131.52) is an enzyme that catalyzes the chemical reaction
Hence, this enzyme has one substrate, L-threonine, and two products, glycine and acetaldehyde.
This enzyme belongs to the family of lyases, specifically the aldehyde-lyases, which cleave carbon-carbon bonds. The systematic name of this enzyme class is L-threonine acetaldehyde-lyase (glycine-forming). This enzyme is also called L-threonine acetaldehyde-lyase. This enzyme participates in glycine, serine and threonine metabolism. It employs one cofactor, pyridoxal phosphate.