Matched description: … dihydroxy-acid dehydratase (EC:4.2.1.9). ... ketol-acid reductoisomerase (EC 1.1.1.86) then it is converted to (S)-3-methyl-2-oxopentanoic via the ... (R) 2,3-Dihydroxy-methylvalerate is generated from 3-Hydroxy-3-methyl-2-oxopentanoic acid via the enzyme …