Patents by Inventor Jin-Nam Lee

Jin-Nam Lee has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Microorganism producing 5?-xanthylic acid
    Patent number: 7608435
    Abstract: The invention relates to a microorganism, obtained by treating Corynebacterium ammoniagenes KCCM 10488 producing 5?-Xanthylic acid as parent strain with UV radiation and mutation Derivatives such as N-methyl-N?nitro-N-nitrosoguanidine (NTG), Having a resistance to 5-fluorotryptophan which enhances Biosynthesis of N5-N10-tetrahydrofolate used for transferring Two formyl group during the process of puring biosynthesis, making It possible to accumulate 5?xanthylic acid in culture medium at a high Yield and high concentration rate same period of fermentation.
    Type: Grant
    Filed: November 18, 2004
    Date of Patent: October 27, 2009
    Assignee: CJ Cheiljedang Corp.
    Inventors: Young-Hoon Park, Jea-Young Chang, Jin-Nam Lee, Ki-Hoon Oh, Jeong-Hwan Kim, Yoon-Suk Oh, Jae-Ick Sim
  • Ammonia-Specific 5'-Xmp Aminase Mutant
    Publication number: 20080318278
    Abstract: Disclosed herein are ammonia-specific 5?-XMP aminase mutants and a method for preparing the same. A mutation is introduced into the active site of glutamine-dependent catalysis in 5?-XMP aminase. The resulting 5?-XMP aminase mutant is devoid of the glutamine-dependent activity and specifically reacts with external ammonia in converting 5?-XMP into 5?-GMP. Thus, the ammonia-specific 5?-XMP aminase mutant is stabler within cells compared to the wild type, and can be useful in the industrial conversion of 5?-XMP into 5?-GMP.
    Type: Application
    Filed: December 14, 2006
    Publication date: December 25, 2008
    Applicant: CJ CHEILJEDANG CORPORATION
    Inventors: Jae-Gu Pan, Heung-Chae Jung, Eui-Joong Kim, Han-Seung Lee, Young Hoon Park, Hyoung Suk Kim, Jong-Kwon Han, Jin Nam Lee, Ki-Hoon Oh, Jeong Hwan Kim, Yoon-Suk Oh, Jae Ick Sim, Kuk-Ki Hong, Kyung Oh Choi, Hyun Soo Kim, Min-Ji Baek, Tae Sun Kang
  • Escherichia Strain Capable of Converting Xmp to Gmp and Maintaining the Inactivated State of Gene(s) Associated with Gmp Degradation and Methods of Using the Same
    Publication number: 20080299620
    Abstract: Provided are mutant strains derived from Escherichia sp. GPU1114 (Accession No. KCCM-10536), having cumulative inactivation of deoD, aphA, appA, and hprt genes, and methods of using the same.
    Type: Application
    Filed: January 20, 2006
    Publication date: December 4, 2008
    Applicant: CJ CORP.
    Inventors: Young-hoon Park, Hyoung-suk Kim, Jin-nam Lee, Ki-hoon Oh, Jeong-hwan Kim, Yoon-suk Oh, Jae-ick Sim, Kyung-oh Choi
  • Microorganism producing 5'-xanthylic acid
    Publication number: 20070141682
    Abstract: The invention relates to a microorganism, obtained by treating Corynebacterium ammoniagenes KCCM 10488 producing 5?-Xanthylic acid as parent strain with UV radiation and mutation Derivatives such as N-methyl-N?nitro-N-nitrosoguanidine (NTG), Having a resistance to 5-fluorotryptophan which enhances Biosynthesis of N5-N10-tetrahydrofolate used for transferring Two formyl group during the process of puring biosynthesis, making It possible to accumulate 5?xanthylic acid in culture medium at a high Yield and high concentration rate same period of fermentation.
    Type: Application
    Filed: November 18, 2004
    Publication date: June 21, 2007
    Inventors: Young-Hoon Park, Jea-Young Chang, Jin-Nam Lee, Ki-Hoon Oh, Jeong-Hwan Kim, Yoon-Suk Oh, Jae-Ick Sim