(R)-3,3-dimethylmalate + NAD(+) => 3-methyl-2-oxobutanoate + CO2 + NADH
(r)-3,3-dimethylmalate + nad(+) => 3-methyl-2-oxobutanoate + co2 + nadh
(R)-3,3-dimethylmalate + NAD(+) => 3-methyl-2-oxobutanoate + CO2 + NADH
(r)-3,3-dimethylmalate + nad(+) => 3-methyl-2-oxobutanoate + co2 + nadh