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.
Patent No.:
Date of Patent:
May. 14, 2002
Filed:
Apr. 25, 2000
Applicant:
Inventors:
Kyo Wakasa, Machida, JP;
Yuzuru Tozawa, Tsukuba, JP;
Teruhiko Terakawa, Atsugi, JP;
Hisakazu Hasegawa, Atsugi, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C12N 1/579 ; C12N 5/14 ; C12N 1/21 ; C12N 1/529 ; C12N 1/582 ;
U.S. Cl.
CPC ...
C12N 1/579 ; C12N 5/14 ; C12N 1/21 ; C12N 1/529 ; C12N 1/582 ;
Abstract
A DNA sequence is provided, which encodes an enzyme that is the &agr;-subunit of the first isozyme of rice anthranilate synthase (ASA). Transformed plants having a high tryptophan content can be regenerated by culturing the plant cells having introduced therein such a recombinant vector which contains, at a position downstream of a promoter, an inserted DNA fragment carrying the above DNA sequence. In addition, methods of selecting transformed plant cells are disclosed, wherein plant cells transformed with the discloses DNA are resistant to inhibitory concentrations of tryptophan or tryptophan analogues.