kynurenate + L-tryptophan + H2O => indole-3-pyruvate + L-kynurenine
kynurenate + l-tryptophan + h2o => indole-3-pyruvate + l-kynurenine
kynurenate + L-tryptophan + H2O => indole-3-pyruvate + L-kynurenine
kynurenate + l-tryptophan + h2o => indole-3-pyruvate + l-kynurenine