3-methyl-2-oxobutanoate + NADPH + H(+) => (R)-2-hydroxy-3-methylbutanoate + NADP(+)
3-methyl-2-oxobutanoate + nadph + h(+) => (r)-2-hydroxy-3-methylbutanoate + nadp(+)
3-methyl-2-oxobutanoate + NADPH + H(+) => (R)-2-hydroxy-3-methylbutanoate + NADP(+)
3-methyl-2-oxobutanoate + nadph + h(+) => (r)-2-hydroxy-3-methylbutanoate + nadp(+)