Inversion of D-tryptophan to L-tryptophan and excretory patterns in the rat and chick.

The behavior of D-tryptophan in the blood plasma and the pattern of tryptophan excretion in the urine were studied in the rat and the chick. When D-tryptophan was administered orally to rats and chicks, both showed D-tryptophan in the plasma. Conversion of D-tryptophan to the L-isomer in the rat was found by an examination of plasma from the posterior vena… (More)