(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 => 2-oxobutanoate + l-kynurenine