D-lactate dehydrogenase(ldha) is a member of the D-isomer specific 2-hydroxyacid dehydrogenase family. In enzymology, an ldha(cytochrome) is an enzyme which catalyzes the chemical reaction. Therefore, the 2 substrates of the ldha enzyme are(D)-lactate and ferricytochrome c, whereas its 2 products are pyruvate and ferrocytochrome c.