In enzymology, a (R)-2-hydroxy-fatty-acid dehydrogenase (EC 22.214.171.124) is an enzyme that catalyzes the chemical reaction(R)-2-hydroxystearate + NAD+
Thus, the two substrates of this enzyme are (R)-2-hydroxystearate and NAD+, whereas its 3 products are 2-oxostearate, NADH, and H+. This reaction is important in fatty acid metabolism.
This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-OH group of donor with NAD+ or NADP+ as acceptor. The systematic name of this enzyme class is (R)-2-hydroxystearate:NAD+ oxidoreductase. Other names in common use include D-2-hydroxy fatty acid dehydrogenase, and 2-hydroxy fatty acid oxidase.