Patent ID: 9695460
Date: 2017-07-04
CPC Classifications: C12Q,C12Y

Claim:
1. A method for analyzing L-tryptophan in a specimen that contains L-tryptophan and L-phenylalanine, comprising the steps of: (A) mixing the specimen, an L-tryptophan oxidase, and water, producing a reaction solution, (B) allowing the reaction solution to stand for a prescribed period in the presence of oxygen, producing at least one type of reaction product; and either (C) confirming the presence of the at least one type of reaction product due to the action of the L-tryptophan oxidase present in the reaction solution after standing for the prescribed period, or (D) measuring the quantity of the at least one type of the reaction product; wherein the L-tryptophan oxidase has the amino acid sequence of SEQ ID NO: 1.