L-tryptophan + NH4(+) + CO2 => N-carbamoyl-L-tryptophan + H2O + 2 H(+)
l-tryptophan + nh4(+) + co2 => n-carbamoyl-l-tryptophan + h2o + 2 h(+)
L-tryptophan + NH4(+) + CO2 => N-carbamoyl-L-tryptophan + H2O + 2 H(+)
l-tryptophan + nh4(+) + co2 => n-carbamoyl-l-tryptophan + h2o + 2 h(+)