Dihydroxy-acid dehydratase
（重定向自Dihydroxyacid dehydratase）
In enzymology, a dihydroxy-acid dehydratase (EC4.2.1.9) is an enzyme that catalyzes the chemical reaction
Hence, this enzyme has one substrate, 2,3-dihydroxy-3-methylbutanoate, and two products, 3-methyl-2-oxobutanoate (α-ketoisovaleric acid) and H2O.