Threonine racemase
class of enzymes

In enzymology, a threonine racemase (EC 5.1.1.6) is an enzyme that catalyzes the chemical reaction
L-threonine
⇌
{\displaystyle \rightleftharpoons }
D-threonine
Hence, this enzyme has one substrate, L-threonine, and one product, D-threonine.
This enzyme belongs to the family of isomerases, specifically those racemases and epimerases acting on amino acids and derivatives. The systematic name of this enzyme class is threonine racemase.
References
Amos H (1954). "A racemase for threonine in Escherichia coli". J. Am. Chem. Soc. 76 (14): 3858. Bibcode:1954JAChS..76.3858A. doi:10.1021/ja01643a083.
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