2-oxobutanoate + L-kynurenine => (2S)-2-aminobutanoate + kynurenate + H2O
2-oxobutanoate + l-kynurenine => (2s)-2-aminobutanoate + kynurenate + h2o
2-oxobutanoate + L-kynurenine => (2S)-2-aminobutanoate + kynurenate + H2O
2-oxobutanoate + l-kynurenine => (2s)-2-aminobutanoate + kynurenate + h2o