The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Sep. 27, 2016

Filed:

Apr. 20, 2016
Applicant:

Ajinomoto Co., Inc., Tokyo, JP;

Inventors:

Wataru Hoshino, Kanagawa, JP;

Yuya Kodama, Kanagawa, JP;

Toshimi Mizukoshi, Kanagawa, JP;

Uno Tagami, Kanagawa, JP;

Assignee:

AJINOMOTO CO., INC., Tokyo, JP;

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C12N 9/06 (2006.01); C12P 41/00 (2006.01); C12Q 1/32 (2006.01); G01N 33/68 (2006.01); C12P 13/06 (2006.01);
U.S. Cl.
CPC ...
C12N 9/0016 (2013.01); C12P 13/06 (2013.01); C12Q 1/32 (2013.01); C12Y 104/01009 (2013.01); G01N 2333/90616 (2013.01);
Abstract

The present invention provides a means and method useful for measurement of a total branched-chain amino acid concentration. Specifically, the present invention provides a modified enzyme in which at least one amino acid residue is mutated so as to improve a property of a leucine dehydrogenase which is associated with the measurement of the total branched-chain amino acids, such as, for example, substrate specificities of leucine dehydrogenase for total branched-chain amino acids, activity of leucine dehydrogenase for any branched-chain amino acids, and thermal stability of leucine dehydrogenase; and a method of analyzing the total branched-chain amino acids, comprising measuring the total branched-chain amino acids contained in a test sample using the modified enzyme.


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