2-oxoglutarate + AH2 => (S)-2-hydroxyglutarate + A
2-oxoglutarate + ah2 => (s)-2-hydroxyglutarate + a
2-oxoglutarate + AH2 => (S)-2-hydroxyglutarate + A
2-oxoglutarate + ah2 => (s)-2-hydroxyglutarate + a