Patents by Inventor Soo-Kyung Oh

Soo-Kyung Oh 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).

  • Isopentenyl diphosphate isomerase from Hevea brasiliensis and rubber producing method using the same
    Patent number: 6316695
    Abstract: The present invention cloned a cDNA clone encoding isopentenyl diphosphate (hereafter “IPP”) isomerase (EC 5.3.3.2) from a cDNA library of Hevea brasiliensis latex. The clone has a continuous open reading frame encoding a peptide of 234 amino acids with a predicted molecular mass of 26.7 kDa. The deduced protein is acidic with an isoelectric point of 4.7 and shows high sequence identity with other IPP isomerases. The recombinant protein expressed in Escherichia coli showed IPP isomerase activity. In vitro rubber biosynthesis assays using washed rubber particle (WRP) deprived of initiating allylic diphosphates were performed with the addition of IPP isomerase in the reaction mixture. Results revealed that the recombinant IPP isomerase is catalytically active in catalyzing the conversion of IPP to DMAPP, a key activation step of the basic five-carbon isoprene unit in rubber biosynthesis. Southern analysis indicated that the IPP isomerase is encoded by two genes in Hevea rubber tree.
    Type: Grant
    Filed: April 22, 1999
    Date of Patent: November 13, 2001
    Assignee: Korea Kumho Petrochemical Co., Ltd.
    Inventors: Kyung-Han Han, Hun-Seung Kang, Soo-Kyung Oh, Dong-Ho Shin, Jae-Mo Yang
  • Genes encoding operon and promoter for branched chain keto acid dehydrogenase of pseudomonas putida and methods
    Patent number: 6168945
    Abstract: DNA sequences coding for branched chain keto dehydrogenase, a promoter and branched chain keto dehydrogenase, and the promoter are disclosed. Also disclosed are recombinant vectors comprising one of the foregoing DNA sequences, transformed hosts comprising one of the foregoing recombinant vectors, and a method of making the polypeptide encoded by the DNA sequence.
    Type: Grant
    Filed: March 14, 1995
    Date of Patent: January 2, 2001
    Assignee: The Board of Regents of the University of Oklahoma
    Inventors: John R. Sokatch, Pamela J. Sykes, K. T. Madhusudhan, Soo-Kyung Oh
  • Antiviral proteins, amarandin 1 and 2, from Amaranthus viridis, DNAs encoding therefrom
    Patent number: 6001986
    Abstract: DNA sequences encoding antiviral proteins, amarandin 1 and 2 from Amaranthus viridis is disclosed. Expression vectors encoding amarandin 1 or 2 and transformed host cells are also disclosed.
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: December 14, 1999
    Assignee: Korea Kumbo Petrochemical Co., Ltd.
    Inventors: Yong Sig Kim, Sun Chung Park, Soo Kyung Oh, Hosull Lee, Jeong Woo Cho, Chang H. Chung
  • DNA encoding amarandin-S ribosome inactivating protein of Amaranthus viridis
    Patent number: 5977335
    Abstract: A CDNA clone encoding amarandin-S, a eukaryotic ribosome-inactivating protein (RIP) having antiviral activity is disclosed. Also disclosed are hybrid vectors encoding the cDNA and host cells transformed with the vector.
    Type: Grant
    Filed: April 29, 1998
    Date of Patent: November 2, 1999
    Assignee: Korea Kumho Petrochemical Co., Ltd.
    Inventors: Yong Sig Kim, Sun Chung Park, Soo Kyung Oh, Jeong Woo Cho, Chang H. Chung