(R)-2-hydroxyglutarate + NAD(+) = 2-oxoglutarate + NADH + H(+)
(r)-2-hydroxyglutarate + nad(+) = 2-oxoglutarate + nadh + h(+)
(R)-2-hydroxyglutarate + NAD(+) = 2-oxoglutarate + NADH + H(+)
(r)-2-hydroxyglutarate + nad(+) = 2-oxoglutarate + nadh + h(+)