(2R,3S)-3-isopropylmalate + NAD(+) => 4-methyl-2-oxopentanoate + CO2 + NADH
(2r,3s)-3-isopropylmalate + nad(+) => 4-methyl-2-oxopentanoate + co2 + nadh
(2R,3S)-3-isopropylmalate + NAD(+) => 4-methyl-2-oxopentanoate + CO2 + NADH
(2r,3s)-3-isopropylmalate + nad(+) => 4-methyl-2-oxopentanoate + co2 + nadh