4-(2-aminophenyl)-2,4-dioxobutanoate + L-methionine => 4-methylsulfanyl-2-oxobutanoate + L-kynurenine
4-(2-aminophenyl)-2,4-dioxobutanoate + l-methionine => 4-methylsulfanyl-2-oxobutanoate + l-kynurenine