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. 27, 2008
Filed:
May. 16, 2002
Jae Yong Park, Seoul, KR;
Byoung Choon Lee, Seoul, KR;
Dae Cheol Kim, Yicheon, KR;
Jin Ho Lee, Yicheon, KR;
Jae Yong Cho, Yongin, KR;
Young Hoon Park, Seongnam, KR;
Jae Yong Park, Seoul, KR;
Byoung Choon Lee, Seoul, KR;
Dae Cheol Kim, Yicheon, KR;
Jin Ho Lee, Yicheon, KR;
Jae Yong Cho, Yongin, KR;
Young Hoon Park, Seongnam, KR;
Cheil Jedang Corporation, Seoul, KR;
Abstract
A method for producing L-threonine using a microorganism is provided. In the method, the threonine dehydratase (tdc) gene existing in the genomic DNA of the microorganism is partially deactivated using a recombination technique. For a microorganism strain with enhanced activity of threonine operon-containing enzymes and the phosphoenolpyruvate carboxylase (ppc) gene, the tdc gene engaged in one of the four threonine metabolic pathways is specifically deactivated, thereby markedly increasing the yield of L-threonine.