Patents by Inventor Chul-Ho Yun

Chul-Ho Yun 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).

  • Publication number: 20230143972
    Abstract: An NADPH-regeneration system based on monomeric isocitrate dehydrogenase (IDH) and a use thereof. Specifically, the present invention relates to a recombinant vector including a polynucleotide encoding an isocitrate dehydrogenase recombinant protein derived from Corynebacterium glutamicum (CgIDH) and an isocitrate dehydrogenase recombinant protein derived from Azotobacter vinelandii (AvIDH), a method for producing the recombinant protein, and an NADPH-regeneration system using the recombinant protein produced by the method. The enzyme in a monomeric form that may be efficiently used in the NADPH-regeneration system in the transformant into which the recombinant vector was introduced, was found, and the NADPH-regeneration system using the enzyme in a monomeric form has a very high utility value as biological parts and biocatalyst materials that provides NADPH to the NADPH-dependent enzyme.
    Type: Application
    Filed: November 11, 2022
    Publication date: May 11, 2023
    Inventors: Geun Joong KIM, Hun-Dong LEE, Su-Kyoung YOO, Dae Eun CHEONG, Chul-Ho YUN, Hye-Ji CHOI, Sang-Oh AHN
  • Publication number: 20220267742
    Abstract: The present invention relates to an NADPH-regeneration system based on monomeric isocitrate dehydrogenase (IDH) and a use thereof. Specifically, the present invention relates to a recombinant vector including a polynucleotide encoding an isocitrate dehydrogenase recombinant protein derived from Corynebacterium glutamicum (CgIDH) and an isocitrate dehydrogenase recombinant protein derived from Azotobacter vinelandii (AvIDH), a method for producing the recombinant protein, and an NADPH-regeneration system using the recombinant protein produced by the method. In the present invention, the enzyme in a monomeric form that may be efficiently used in the NADPH-regeneration system in the transformant into which the recombinant vector was introduced, was found, and the NADPH-regeneration system using the enzyme in a monomeric form has a very high utility value as biological parts and biocatalyst materials that provides NADPH to the NADPH-dependent enzyme.
    Type: Application
    Filed: March 1, 2021
    Publication date: August 25, 2022
    Inventors: Geun Joong KIM, Hun-Dong LEE, Su-Kyoung YOO, Dae Eun CHEONG, Chul-Ho YUN, Hye-Ji CHOI, Sang-Oh AHN
  • Patent number: 11236309
    Abstract: A recombinant vector according to an embodiment of the present invention may be used for producing a reconstituted cytochrome P450 oxygenase-reductase fusion protein. Oxygenase and reductase may be independently expressed in a host cell into which the recombinant vector is introduced, and then may be fused with a split intein so that it is possible to increase the heme content contained in the active site of the oxygenase and improve enzyme activity and stability.
    Type: Grant
    Filed: August 17, 2020
    Date of Patent: February 1, 2022
    Assignee: INDUSTRY FOUNDATION OF CHONNAM NATIONAL UNIVERSITY
    Inventors: Geun Joong Kim, Chul Ho Yun, Dae Eun Cheong, Su Kyoung Yoo, Hye Ji Choi, Thien Kim Le
  • Publication number: 20210355456
    Abstract: A recombinant vector according to an embodiment of the present invention may be used for producing a reconstituted cytochrome P450 oxygenase-reductase fusion protein. Oxygenase and reductase may be independently expressed in a host cell into which the recombinant vector is introduced, and then may be fused with a split intein so that it is possible to increase the heme content contained in the active site of the oxygenase and improve enzyme activity and stability.
    Type: Application
    Filed: August 17, 2020
    Publication date: November 18, 2021
    Inventors: Geun Joong KIM, Chul Ho YUN, Dae Eun CHEONG, Su Kyoung YOO, Hye Ji CHOI, Thien Kim Le
  • Patent number: 9890409
    Abstract: Provided is a composition for producing astringin among metabolites of polydatin, wherein the astringin may be mass-produced by oxidizing the polydatin using a CYP102A1 chimera and mutants thereof as a catalyst, the CYP102A1 chimera being produced by fusing a reductase domain of a wild-type CYP102A1 which is a bacterial cytochrome P450 enzyme, with a heme domain of a CYP102A1 mutant.
    Type: Grant
    Filed: May 3, 2016
    Date of Patent: February 13, 2018
    Assignee: Industry Foundation of Chonnam National University
    Inventors: Chul-Ho Yun, Hyung-Sik Kang, Young-Hee Joung, Gun Su Cha
  • Publication number: 20170073720
    Abstract: Provided is a composition for producing astringin among metabolites of polydatin, wherein the astringin may be mass-produced by oxidizing the polydatin using a CYP102A1 chimera and mutants thereof as a catalyst, the CYP102A1 chimera being produced by fusing a reductase domain of a wild-type CYP102A1 which is a bacterial cytochrome P450 enzyme, with a heme domain of a CYP102A1 mutant.
    Type: Application
    Filed: May 3, 2016
    Publication date: March 16, 2017
    Inventors: Chul-Ho Yun, Hyung-Sik Kang, Young-Hee Joung, Gun Su Cha
  • Patent number: 9459227
    Abstract: Provided is a portable diagnostic test apparatus including: an accommodation portion including an outer side, an inner side, and an accommodation space provided on the inner side; a hinge; and a main body coupled to the accommodation portion by the hinge, where the portable diagnostic test apparatus is configured to be opened and closed by rotating one of the accommodation portion and the main body about the hinge, and where the main body is configured to obtain a result of a measurement based on data collected from drawn blood. The main body and/or the accommodation portion includes at least one strip keeping portion configured to store at least one strip. The at least one strip keeping portion may include: a housing; a discharge portion; and a first movement portion configured to move one of the strips to the discharge portion.
    Type: Grant
    Filed: April 3, 2014
    Date of Patent: October 4, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: In Duk Hwang, Yeon Moo Chung, Na Hui Kim, Jeong Je Park, Chul Ho Yun
  • Patent number: 9243270
    Abstract: The present invention relates to a novel method for producing metabolites from omeprazole using bacterial cytochrome P450, and a composition therefor, and more specifically, to a composition and a kit for producing a 5?-hydroxyl product from omeprazole, containing bacterial cytochrome P450 BM3 (CYP102A1) or mutants thereof, and to a method for producing the same. The composition, the kit, and the method are capable of economically and highly efficiently mass-producing the 5?-hydroxyl product from the omeprazole, and thus will significantly contribute to development of a novel drug using metabolites from the omeprazole.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: January 26, 2016
    Inventor: Chul-Ho Yun
  • Patent number: 9145571
    Abstract: A method of producing human metabolites of simvastatin or lovastatin, and more particularly, a method of producing human metabolites of simvastatin and lovastatin by using bacterial cytochrome P450 BM3(CYP102A1) or mutants thereof, and a composition and kit therefor.
    Type: Grant
    Filed: August 24, 2010
    Date of Patent: September 29, 2015
    Inventors: Chul Ho Yun, Keon Hee Kim, Dong Hyun Kim, Ji Yeon Kang, Sun Ha Park
  • Patent number: 9127249
    Abstract: Provided is a novel method for preparing metabolites of atorvastatin using bacterial cytochrome P450, and a composition therefor, and more particularly, a composition for preparing 2-hydroxylated product of 4-hydroxylated product from atorvastatin including bacterial cytochrome P 450 BM3 (CYP102A1), CYP102A1 mutants, and chimeras derived from the CYP102A1 mutants, a kit therefor, and a method for preparing thereof.
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: September 8, 2015
    Assignee: INDUSTRY FOUNDATION OF CHONNAM NATIONAL UNIVERSITY
    Inventors: Chul-Ho Yun, Dong-Hyun Kim, Ji-Yeon Kang, Sun-Ha Park, Sang-Hoon Ryu
  • Patent number: 9109237
    Abstract: Provided is a method of preparing piceatannol, and more particularly, to a method of preparing piceatannol from resveratrol using bacterial cytochrome P450 BM3 (CYP102A1) or mutants thereof, and a composition and a kit therefor.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: August 18, 2015
    Inventor: Chul Ho Yun
  • Patent number: 9046460
    Abstract: Provided are a particle measurement apparatus having a plurality of apertures arranged in series therein, and a particle measurement method using the same to statistically analyze multiple signals generated when a particle passes through the plurality of apertures, thus acquiring more accurate information on particles. The particle measurement apparatus includes a plurality of aperture members arranged in series, a plurality of electrodes to form an electric field within the plurality of aperture members, and an analyzer for statistically analyzing multiple electrical signals generated when a particle passes through the plurality of aperture members.
    Type: Grant
    Filed: December 27, 2011
    Date of Patent: June 2, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yong Koo Lee, In Duk Hwang, Tae Soo Kim, Jong Gun Lee, Seock Woo Jang, Chul Ho Yun
  • Publication number: 20150093793
    Abstract: The present invention relates to a novel method for producing metabolites from omeprazole using bacterial cytochrome P450, and a composition therefor, and more specifically, to a composition and a kit for producing a 5?-hydroxyl product from omeprazole, containing bacterial cytochrome P450 BM3 (CYP102A1) or mutants thereof, and to a method for producing the same. The composition, the kit, and the method are capable of economically and highly efficiently mass-producing the 5?-hydroxyl product from the omeprazole, and thus will significantly contribute to development of a novel drug using metabolites from the omeprazole.
    Type: Application
    Filed: December 21, 2012
    Publication date: April 2, 2015
    Inventor: Chul-Ho YUN
  • Patent number: 8986611
    Abstract: A sample analysis apparatus configured to automatically press a start button upon installation of a sample tube is provided. The sample analysis apparatus includes: a body of the sample analysis apparatus; a door housing which may be provided in an opened state or a closed state, and configured to be coupled to the body of the sample analysis apparatus by a hinge; a tube accommodating unit included in the door housing and configured to accommodate the sample tube; a start button included in the body of the sample analysis apparatus and configured to start analysis of the sample; and an operating member positioned at a first position which is distant from the start button the sample tube is not installed in the tube accommodating unit, and a second position which is configured to operate the start button when a sample tube is installed and the door housing is closed.
    Type: Grant
    Filed: August 2, 2012
    Date of Patent: March 24, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yong Koo Lee, Tae Soo Kim, In Duk Hwang, Seock Woo Jang, Chul Ho Yun
  • Publication number: 20150072406
    Abstract: Provided is a portable diagnostic test apparatus including: an accommodation portion including an outer side, an inner side, and an accommodation space provided on the inner side; a hinge; and a main body coupled to the accommodation portion by the hinge, where the portable diagnostic test apparatus is configured to be opened and closed by rotating one of the accommodation portion and the main body about the hinge, and where the main body is configured to obtain a result of a measurement based on data collected from drawn blood. The main body and/or the accommodation portion includes at least one strip keeping portion configured to store at least one strip. The at least one strip keeping portion may include: a housing; a discharge portion; and a first movement portion configured to move one of the strips to the discharge portion.
    Type: Application
    Filed: April 3, 2014
    Publication date: March 12, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: In Duk HWANG, Yeon Moo CHUNG, Na Hui KIM, Jeong Je PARK, Chul Ho YUN
  • Publication number: 20140308716
    Abstract: Provided is a novel method for preparing metabolites of atorvastatin using bacterial cytochrome P450, and a composition therefor, and more particularly, a composition for preparing 2-hydroxylated product of 4-hydroxylated product from atorvastatin including bacterial cytochrome P 450 BM3 (CYP102A1), CYP102A1 mutants, and chimeras derived from the CYP102A1 mutants, a kit therefor, and a method for preparing thereof.
    Type: Application
    Filed: September 27, 2012
    Publication date: October 16, 2014
    Inventors: Chul-Ho Yun, Dong-Hyun Kim, Ji-Yeon Kang, Sun-Ha Park, Sang-Hoon Ryu
  • Publication number: 20140106423
    Abstract: Provided is a method of preparing piceatannol, and more particularly, to a method of preparing piceatannol from resveratrol using bacterial cytochrome P450 BM3 (CYP102A1) or mutants thereof, and a composition and a kit therefor.
    Type: Application
    Filed: September 30, 2013
    Publication date: April 17, 2014
    Applicant: GLO BIOTECH
    Inventors: Chul Ho YUN, Dong Hyun KIM
  • Publication number: 20130033708
    Abstract: A sample analysis apparatus configured to automatically press a start button upon installation of a sample tube is provided. The sample analysis apparatus includes: a body of the sample analysis apparatus; a door housing which may be provided in an opened state or a closed state, and configured to be coupled to the body of the sample analysis apparatus by a hinge; a tube accommodating unit included in the door housing and configured to accommodate the sample tube; a start button included in the body of the sample analysis apparatus and configured to start analysis of the sample; and an operating member positioned at a first position which is distant from the start button the sample tube is not installed in the tube accommodating unit, and a second position which is configured to operate the start button when a sample tube is installed and the door housing is closed.
    Type: Application
    Filed: August 2, 2012
    Publication date: February 7, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yong Koo LEE, Tae Soo KIM, In Duk HWANG, Seock Woo JANG, Chul Ho YUN
  • Publication number: 20120202256
    Abstract: A method of producing human metabolites of simvastatin or lovastatin, and more particularly, a method of producing human metabolites of simvastatin and lovastatin by using bacterial cytochrome P450 BM3(CYP102A1) or mutants thereof, and a composition and kit therefor.
    Type: Application
    Filed: August 24, 2010
    Publication date: August 9, 2012
    Applicant: GLO BIOTECH
    Inventors: Chul Ho Yun, Keon Hee Kim, Dong Hyun Kim, Ji Yeon Kang, Sun Ha Park
  • Publication number: 20120185211
    Abstract: Provided are a particle measurement apparatus having a plurality of apertures arranged in series therein, and a particle measurement method using the same to statistically analyze multiple signals generated when a particle passes through the plurality of apertures, thus acquiring more accurate information on particles. The particle measurement apparatus includes a plurality of aperture members arranged in series, a plurality of electrodes to form an electric field within the plurality of aperture members, and an analyzer for statistically analyzing multiple electrical signals generated when a particle passes through the plurality of aperture members.
    Type: Application
    Filed: December 27, 2011
    Publication date: July 19, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yong Koo LEE, In Duk HWANG, Tae Soo KIM, Jong Gun LEE, Seock Woo JANG, Chul Ho YUN