(2R)-hydroxy-4-methylpentanoate + NADP(+) => 4-methyl-2-oxopentanoate + NADPH + H(+)
(2r)-hydroxy-4-methylpentanoate + nadp(+) => 4-methyl-2-oxopentanoate + nadph + h(+)
(2R)-hydroxy-4-methylpentanoate + NADP(+) => 4-methyl-2-oxopentanoate + NADPH + H(+)
(2r)-hydroxy-4-methylpentanoate + nadp(+) => 4-methyl-2-oxopentanoate + nadph + h(+)