Hansenula Patents (Class 435/255.6)
  • Patent number: 8986956
    Abstract: The present invention relates to a method for producing hEGF (human epidermal growth factor) which has the same activity as the wild form, in high concentration and with a high degree of purity. More specifically, the invention relates to an hEGF expression vector comprising a nucleic acid sequence coding for the polypeptide of sequence number 14; a host cell in which the expression vector has been genetically transformed; and a method for producing hEGF, comprising a step in which the expression vector is created and is genetically transformed in yeast from which the KEX1 gene is lacking. Using the method of the present invention, it is possible to produce a large volume of human derived EGF which has the same size and activity as human derived EGF, and this EGF can be used in various ways such as in medicine and cosmetics.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: March 24, 2015
    Assignee: Korea Research Institute of Bioscience and Biotechnology
    Inventors: Jung Hoon Sohn, Jung Hoon Bae, Mi Jin Kim, Hyun Jin Kim, Soon Ho Park, Kwang Mook Lim
  • Patent number: 8835152
    Abstract: Compositions of peptides and surface-active agents are described, as are methods of making and using such compositions. The compositions are capable of affecting metabolic rates in biological systems, and to accelerate nutrient uptake without a concomitant increase in biofilm production.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: September 16, 2014
    Assignee: Advanced Biocatalytics Corporation
    Inventor: Carl W. Podella
  • Patent number: 8795984
    Abstract: A method is described for producing protein compositions having reduced amounts of O-linked glycosylation. The method includes producing the protein in cells cultured in the presence of an inhibitor of Pmt-mediated O-linked glycosylation and/or in the presence of one or more ?-1,2-mannosidases.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: August 5, 2014
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Piotr Bobrowicz, W. James Cook, Warren Kett
  • Patent number: 8765404
    Abstract: Some aspects of this invention relate to methods useful for the conversion of a carbon source to a biofuel or biofuel precursor using engineered microbes. Some aspects of this invention relate to the discovery of a key regulator of lipid metabolism in microbes. Some aspects of this invention relate to engineered microbes for biofuel or biofuel precursor production.
    Type: Grant
    Filed: March 2, 2011
    Date of Patent: July 1, 2014
    Assignee: Massachusetts Institute of Technology
    Inventors: Gregory Stephanopoulos, Syed Hussain Imam Abidi
  • Patent number: 8735338
    Abstract: Surfactant-containing compositions are described which include a protein component that has the effect of improving the surface-active properties of the surfactants contained in the compositions. The surfactant-containing compositions having the protein component demonstrate significantly lower critical micelle concentrations (CMC), reduced surface tensions, and reduced interfacial tensions than do comparable compositions having no protein component. In addition, the surfactant-containing compositions having the protein component has the effect of converting greasy waste contaminants to surface active materials.
    Type: Grant
    Filed: May 29, 2012
    Date of Patent: May 27, 2014
    Assignee: Advanced Biocatalytics Corp.
    Inventors: John W. Baldridge, Carl W. Podella
  • Patent number: 8691540
    Abstract: From a bacterial strain isolated from an environmental sample, after enrichment in medium containing 1-butanol as the carbon source, a new enzyme with butanol dehydrogenase activity was identified. The enzyme can convert butyraldehyde to 1-butanol, isobutyraldehyde to isobutanol, as well as 2-butanone to 2-butanol and thus is useful for biosynthesis of butanol in recombinant microbial hosts producing these substrates. The encoding gene, named sadB, was isolated from the strain identified as an isolate of Achromobacter xylosoxidans.
    Type: Grant
    Filed: May 24, 2012
    Date of Patent: April 8, 2014
    Assignee: Butamax Advanced Biofuels LLC
    Inventors: Michael G. Bramucci, Andrew C. Eliot, Lori Ann Maggio-Hall, Charles E. Nakamura
  • Patent number: 8647840
    Abstract: The invention provides orthogonal translation systems for the production of polypeptides comprising unnatural amino acids in methylotrophic yeast such as Pichia pastoris. Methods for producing polypeptides comprising unnatural amino acids in methylotrophic yeast such as Pichia pastoris are also provided.
    Type: Grant
    Filed: December 10, 2008
    Date of Patent: February 11, 2014
    Assignee: The Scripps Research Institute
    Inventors: Travis Young, Peter G. Schultz
  • Patent number: 8501438
    Abstract: A method is described for producing protein compositions having reduced amounts of O-linked glycosylation. The method includes producing the protein in cells cultured in the presence of an inhibitor of Pmt-mediated O-linked glycosylation and/or in the presence of one or more ?-1,2-mannosidases.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: August 6, 2013
    Assignee: GlycoFi, Inc.
    Inventors: Piotr Bobrowicz, W. James Cook, Warren Kett
  • Patent number: 8465945
    Abstract: The present invention includes a method to produce a recombinant mite Group 1 protein in a methyltrophic yeast or an Escherichia coli microorganism. The present invention also relates to a recombinant mite Group 1 protein obtained by such a method, such a recombinant protein being able to selectively bind IgE or cause proliferation of a T cell that proliferate in response to a native mite Group 1 protein. Also included in the present invention is the use of such a recombinant mite Group 1 protein to detect mite allergy or to reduce an allergic response to a mite Group 1 protein. The present invention also includes novel mite Group 1 nucleic acid molecules, proteins, recombinant molecules, and recombinant cells, as well as uses thereof.
    Type: Grant
    Filed: October 2, 2006
    Date of Patent: June 18, 2013
    Assignee: Merck Patent GmbH
    Inventors: Elaine A. Best, Martin J. McDermott
  • Patent number: 8389459
    Abstract: A composition including the fermentation supernatant from a fermentation of yeast is intended to be conveniently introduced through the wastewater plumbing system of a private home or other facility into a septic system servicing the home or other facility to substantially accelerate the ability of the bacteria resident in the septic system to substantially digest biologically available organic compounds present in the septic system, and methods of accomplishing the same.
    Type: Grant
    Filed: March 2, 2011
    Date of Patent: March 5, 2013
    Assignee: Advanced Biocatalytics Corporation
    Inventors: John W. Baldridge, Carl W. Podella
  • Publication number: 20120329138
    Abstract: A process for separation of a mixture containing a microbial substance and a liquid using deformable filter is provided.
    Type: Application
    Filed: December 19, 2011
    Publication date: December 27, 2012
    Applicant: SHELL OIL COMPANY
    Inventors: Henry Van Kaathoven, Johannes Pieter Haan, Wilhelmus Maria Bond, Johannes Leendert Willem Cornelis Den Boestert
  • Publication number: 20120190107
    Abstract: Methods of enhanced protein transduction are provided. Aspects of the methods include contacting a cell with a transduction protein, where the transduction protein includes both a protein-of-interest domain and a protein transduction domain, and a nucleic acid transfection agent. Also provided are systems and kits that find use in practicing methods according to embodiments of the invention. The methods, systems and kits find use in a variety of different applications.
    Type: Application
    Filed: January 25, 2012
    Publication date: July 26, 2012
    Inventors: Dwayne Bisgrove, Hiroaki Sagawa
  • Patent number: 8206949
    Abstract: A method is described for producing protein compositions having reduced amounts of O-linked glycosylation. The method includes producing the protein in cells cultured in the presence of an inhibitor of Pmt-mediated O-linked glycosylation and/or in the presence of one or more ?-1,2-mannosidases.
    Type: Grant
    Filed: November 10, 2006
    Date of Patent: June 26, 2012
    Assignee: GlycoFi, Inc.
    Inventors: Piotr Bobrowicz, W. James Cook, Warren Kett
  • Patent number: 8188028
    Abstract: Surfactant-containing compositions are described which include a protein component that has the effect of improving the surface-active properties of the surfactants contained in the compositions. The surfactant-containing compositions having the protein component demonstrate significantly lower critical micelle concentrations (CMC), reduced surface tensions, and reduced interfacial tensions than do comparable compositions having no protein component. In addition, the surfactant-containing compositions having the protein component has the effect of converting greasy waste contaminants to surface active materials.
    Type: Grant
    Filed: January 11, 2010
    Date of Patent: May 29, 2012
    Assignee: Advanced BioCatalytics Corporation
    Inventors: John W. Baldridge, Carl W. Podella
  • Publication number: 20120090054
    Abstract: The present invention relates to isolated polypeptides having endoglucanase activity and isolated polynucleotides encoding the polypeptides. The invention also relates to nucleic acid constructs, vectors, and host cells comprising the polynucleotides as well as methods for producing and using the polypeptides.
    Type: Application
    Filed: December 19, 2011
    Publication date: April 12, 2012
    Applicants: Novozymes, Inc., Novozymes A/S
    Inventors: Paul Harris, Elena Valsenko, Elizabeth Zaretsky, Marcus Sakari Kauppinnen
  • Publication number: 20120034648
    Abstract: The invention relates to a cell which comprises a nucleotide sequence encoding a xylose isomerase, wherein the amino acid sequence of the xylose isomerase has at least about 70% sequence identity to the amino acid sequence set out in SEQ ID NO: 3 and wherein the nucleotide sequence is heterologous to the host. A cell of the invention may be used in a process for producing a fermentation product, such as ethanol. Such a process may comprise fermenting a medium containing a source of xylose with a cell of the invention such that the cell ferments xylose to the fermentation product.
    Type: Application
    Filed: March 5, 2009
    Publication date: February 9, 2012
    Inventors: Paul Klaassen, Jan Metske Van Der Laan, Bianca Elisabeth Maria Gielesen, Gijsberdina Pieternella Van Suylekom
  • Publication number: 20110201093
    Abstract: The present invention is directed to the enhanced production of ethanol from fermentation using an ethanol producing microorganism. In particular, the present invention provides a process for the enhanced growth and metabolism of an ethanol producing microorganism (e.g., yeast), for the purpose of increasing or enhancing ethanol production, both in terms of total ethanol produced and in terms of the time required for ethanol producing microorganisms to convert carbohydrates and/or sugars to end products (i.e., ethanol). In accordance with this invention bicarbonate ions are used to enhance ethanol fermentation and/or reduce the time required for ethanol producing microorganisms to convert carbohydrates and/or sugars to end products, i.e., ethanol. The present invention can also be used for enhancing fermentation end products in, for example, the fuel ethanol, industrial, cheese, brewing, and wine making industries.
    Type: Application
    Filed: April 28, 2011
    Publication date: August 18, 2011
    Applicant: CHURCH & DWIGHT CO., INC.
    Inventors: Melvin H. Czechowski, Steven A. Bolkan
  • Publication number: 20110150850
    Abstract: The invention is in the field of use of engineered microbes for the delivery and administration of therapeutic peptides or proteins to humans or animals suffering from a disease, or the use of engineered microbes for the delivery of antigens such as for vaccination purposes. More in particular, the invention relates to a recombinant microbe that has reduced capacity of colonizing the mucosa in comparison to its wild type ancestor, in particular when residing in the alimentary tract as part of a treatment or vaccination of a human or animal. In particular, the recombinant microbe contains an inactive thymidylate synthase gene that causes the reduced capability for the microbe to colonize in the alimentary tract. The invention also covers the use of said recombinant microbes comprising nucleic acids or vectors for expressing heterologous or homologous proteins; and also for delivery, especially therapeutic delivery, of the said proteins to animals or humans.
    Type: Application
    Filed: September 29, 2009
    Publication date: June 23, 2011
    Inventor: Lothar Steidler
  • Patent number: 7960153
    Abstract: The present invention is directed to the enhanced production of ethanol from fermentation using an ethanol producing microorganism. In particular, the present invention provides a process for the enhanced growth and metabolism of an ethanol producing microorganism (e.g., yeast), for the purpose of increasing or enhancing ethanol production, both in terms of total ethanol produced and in terms of the time required for ethanol producing microorganisms to convert carbohydrates and/or sugars to end products (i.e., ethanol). In accordance with this invention bicarbonate ions are used to enhance ethanol fermentation and/or reduce the time required for ethanol producing microorganisms to convert carbohydrates and/or sugars to end products, i.e., ethanol. The present invention can also be used for enhancing fermentation end products in, for example, the fuel ethanol, industrial, cheese, brewing, and wine making industries.
    Type: Grant
    Filed: December 31, 2007
    Date of Patent: June 14, 2011
    Assignee: Church & Dwight Co., Inc.
    Inventors: Melvin H. Czechowski, Steven A. Bolkan
  • Publication number: 20110053235
    Abstract: The invention relates to a yeast cell producing isobutanol, characterized in that the cell has an increased metabolic flow of material from pyruvate and acetolactate, 2,3-dihydroxy isovalerate, 2-ketoisovalerate, isobutyraldehyde to isobutanol, in that at least one of the genes coding the enzymes, which are involved in this conversion, is over-expressed, and without any of said genes being heterologous to said yeast cell, and to a method for the production of isobutanol using yeast cells, comprising the provision of the yeast cells according to the invention, and bringing the yeast cell into contact with a fermentable carbon source.
    Type: Application
    Filed: February 19, 2009
    Publication date: March 3, 2011
    Applicant: Butalco GmbH
    Inventors: Gunter Festel, Eckhard Boles, Christian Weber, Dawid Brat
  • Publication number: 20110014650
    Abstract: The invention provides orthogonal translation systems for the production of polypeptides comprising unnatural amino acids in methylotrophic yeast such as Pichia pastoris. Methods for producing polypeptides comprising unnatural amino acids in methylotrophic yeast such as Pichia pastoris are also provided.
    Type: Application
    Filed: December 10, 2008
    Publication date: January 20, 2011
    Inventors: Travis Young, Peter G. Schultz
  • Patent number: 7645730
    Abstract: Surfactant-containing compositions are described which include a protein component that has the effect of improving the surface-active properties of the surfactants contained in the compositions. The surfactant-containing compositions having the protein component demonstrate significantly lower critical micelle concentrations (CMC), reduced surface tensions, and reduced interfacial tensions than do comparable compositions having no protein component. In addition, the surfactant-containing compositions having the protein component has the effect of converting greasy waste contaminants to surface active materials.
    Type: Grant
    Filed: December 28, 2005
    Date of Patent: January 12, 2010
    Assignee: Advanced BioCatalytics Corp.
    Inventors: John W. Baldridge, Carl W. Podella
  • Publication number: 20090170174
    Abstract: The present invention is directed to the enhanced production of ethanol from fermentation using an ethanol producing microorganism. In particular, the present invention provides a process for the enhanced growth and metabolism of an ethanol producing microorganism (e.g., yeast), for the purpose of increasing or enhancing ethanol production, both in terms of total ethanol produced and in terms of the time required for ethanol producing microorganisms to convert carbohydrates and/or sugars to end products (i.e., ethanol). In accordance with this invention bicarbonate ions are used to enhance ethanol fermentation and/or reduce the time required for ethanol producing microorganisms to convert carbohydrates and/or sugars to end products, i.e., ethanol. The present invention can also be used for enhancing fermentation end products in, for example, the fuel ethanol, industrial, cheese, brewing, and wine making industries.
    Type: Application
    Filed: December 31, 2007
    Publication date: July 2, 2009
    Inventors: Melvin H. Czechowski, Steven A. Bolkan
  • Publication number: 20080241883
    Abstract: Compositions and methods comprising recombinant expression vector elements (rEVEs) to enhance the level of expression of recombinant proteins are described. Other compositions and methods for lowering, substantially suppressing, or essentially silencing expression of a recombinant protein are also described.
    Type: Application
    Filed: March 28, 2008
    Publication date: October 2, 2008
    Inventors: Wendy R. Gion, Gerald R. Carson, Hong Gao, Yune Z. Kunes
  • Publication number: 20080226660
    Abstract: Synthetic DNA molecules encoding the HPV 52 L1 protein are provided. Specifically, the present invention provides polynucleotides encoding HPV 52 L1 protein, wherein said polynucleotides are codon-optimized for high level expression in a yeast cell. In alternative embodiments of the invention, the nucleotide sequence of the synthetic molecule is altered to eliminate transcription termination signals that are recognized by yeast. The synthetic molecules may be used to produce HPV 52 virus-like particles (VLPs), and to produce vaccines and pharmaceutical compositions comprising the HPV 52 VLPs. The vaccines of the present invention provide effective immunoprophylaxis against papillomavirus infection through neutralizing antibody and cell-mediated immunity and may also be useful for treatment of existing HPV infections.
    Type: Application
    Filed: March 18, 2005
    Publication date: September 18, 2008
    Inventors: Janine T. Bryan, Michelle K. Brownlow, Loren D. Schultz, Kathrin U. Jansen
  • Publication number: 20080199942
    Abstract: The present invention provides methods for generating CMP-sialic acid in a non-human host which lacks endogenous CMP-Sialic by providing the host with enzymes involved in CMP-sialic acid synthesis from a bacterial, mammalian or hybrid CMP-sialic acid biosynthetic pathway. Novel fungal hosts expressing a CMP-sialic acid biosynthetic pathway for the production of sialylated glycoproteins are also provided.
    Type: Application
    Filed: February 6, 2008
    Publication date: August 21, 2008
    Inventor: Stephen R. Hamilton
  • Publication number: 20080153126
    Abstract: A mutant Pichia pastoris alcohol oxidase 1 (AOX1) promoter of the wild type Pichia pastoris AOX1 promoter (SEQ ID No. 1) comprising at least one mutation selected from the group consisting of: a) a transcription factor binding site (TFBS), b) nucleotides 170 to 235 (?784 to ?719), nucleotides 170 to 191 (?784 to ?763), nucleotides 192 to 213 (?762 to ?741), nucleotides 192 to 210 (?762 to ?744), nucleotides 207 to 209 (?747 to ?745), nucleotides 214 to 235 (?740 to ?719), nucleotides 304 to 350 (?650 to ?604), nucleotides 364 to 393 (?590 to ?561), nucleotides 434 to 508 (?520 to ?446), nucleotides 509 to 551 (?445 to ?403), nucleotides 552 to 560 (?402 to ?394), nucleotides 585 to 617 (?369 to ?337), nucleotides 621 to 660 (?333 to ?294), nucleotides 625 to 683 (?329 to ?271), nucleotides 736 to 741 (?218 to ?213), nucleotides 737 to 738 (?217 to ?216), nucleotides 726 to 755 (?228 to ?199), nucleotides 784 to 800 (?170 to ?154) or nucleotides 823 to 861 (?131 to ?93) of Seq ID No.
    Type: Application
    Filed: February 23, 2006
    Publication date: June 26, 2008
    Applicant: TECHNISCHE UNIVERSITAT GRAZ
    Inventors: Franz Hartner, Anton Glieder
  • Publication number: 20080125487
    Abstract: The subject invention relates to the identification of a gene involved in the elongation of polyunsaturated fatty acids containing unsaturation at the carbon 9 position (i.e., “?9-elongase”) and to uses thereof. In particular, ?9-elongase may be utilized, for example, in the conversion of linoleic acid (LA, 18:2n-6) to eicosadienoic acid (EDA, 20:2n-6). The production of dihomo-?-linolenic acid (DGLA, 20:3n-6) from eicosadienoic acid (EDA, 20:2n-6), and arachidonic acid (AA, 20:4n-6) from dihomo-?-linolenic acid (DGLA, 20:3n-6) is then catalyzed by ?8-desaturase and ?5-desaturase, respectively. AA or polyunsaturated fatty acids produced therefrom may be added to pharmaceutical compositions, nutritional compositions, animal feeds, as well as other products such as cosmetics.
    Type: Application
    Filed: November 17, 2006
    Publication date: May 29, 2008
    Inventors: Tapas Das, Pradip Mukerji, Padmavathy Krishnan, Amanda E. Leonard, Suzette L. Pereira
  • Patent number: 7285406
    Abstract: The invention relates to the isolation, sequencing, and recombinant expression of genes encoding either a nitrile hydratase (NHase) or amidase (Am) from Comamonas testosteroni 5-MGAM-4D, where the NHase is useful for catalyzing the hydration of nitrites to the corresponding amides, and the amidase is useful for hydrolysis of amides to the corresponding carboxylic acids. Also provided are transformed host cells containing polynucleotides for expressing the nitrile hydratase or amidase enzymes from Comamonas testosteroni 5-MGAM-4D.
    Type: Grant
    Filed: November 16, 2006
    Date of Patent: October 23, 2007
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Mark S. Payne, Robert DiCosimo, John E. Gavagan, Robert D. Fallon
  • Patent number: 7262287
    Abstract: The present invention relates to a nucleic acid molecule comprising the HpYPS1 gene encoding H. polymorpha yapsin1, a polypeptide encoded by the nucleic acid molecule, a H. polymorpha mutant strain having reduced yapsin activity by mutation of the HpYPS gene encoding H. polymorpha yapsin1, a recombinant H. polymorpha strain expressing a foreign protein produced by introducing a gene encoding the foreign protein into the H. polymorpha mutant strain, and a process for preparing a foreign protein comprising culturing the recombinant H. polymorpha strain under conditions to express the foreign protein and isolating the foreign protein from the culture.
    Type: Grant
    Filed: June 28, 2003
    Date of Patent: August 28, 2007
    Assignees: Korea Research Institute of Bioscience and Biotechnology, Leadbio, Inc., Bioholdings Co., Ltd.
    Inventors: Hyun-Ah Kang, Sang-Ki Rhee, Min-Jeong Sohn, Jeong-Yoon Kim
  • Patent number: 7063958
    Abstract: The present invention relates to identification of a receptor for a satiety factor, which is involved in body weight homeostasis. Mutations in this receptor are associated with obese phenotypes. In particular, the present invention relates to identification and characterization of the receptor for leptin, including a naturally occurring soluble form of the receptor that is expected to modulate leptin activity, in particular to agonize leptin activity. The invention further relates to the nucleic acids encoding the receptor, and to methods for using the receptor, e.g., to identify leptin analogs, therapeutically, such as in gene therapy or in soluble form as an agonist or antagonist of leptin activity, or diagnostically.
    Type: Grant
    Filed: February 14, 1996
    Date of Patent: June 20, 2006
    Assignee: The Rockefeller University
    Inventors: Jeffrey M. Friedman, Gwo-Hwa Lee, Ricardo Proenca
  • Patent number: 6884602
    Abstract: This invention involves a process for selecting and producing eukaryotic alkaline phosphatase in yeast. Yeast cells are subjected to multiple transformations using a vector comprising a first resistance marker gene and the alkaline phosphatase gene. Those strains that grow in media containing the first resistance marker are further transformed using a vector comprising a second selection marker gene and the alkaline phosphatase gene. Transformants that grow in media containing the second selection marker are selected for expressing the eukaryotic alkaline phosphatase.
    Type: Grant
    Filed: July 23, 2001
    Date of Patent: April 26, 2005
    Assignee: Roche Diagnostics Operations, Inc.
    Inventors: Rainer Mueller, Johann-Peter Thalhofer, Frank Geipel, Werner Hoelke, Stephan Glaser, Hellmut Eckstein, Thomas Kirschbaum, Bettina Bommarius
  • Patent number: 6773911
    Abstract: The present invention related generally novel mammalian apoptosis-inducing factors, polynucleotides encoding such factors and methods related thereto.
    Type: Grant
    Filed: November 23, 1999
    Date of Patent: August 10, 2004
    Assignees: Amgen Canada Inc., Centre National de la Recherche Scientifique
    Inventors: Josef M. Penninger, Guido P. Kroemer, David Peter Siderovski, Naoufal Zamzami, Santos A. Susin, Bryan E. L. Snow
  • Patent number: 6699691
    Abstract: Polynucleotides that comprise regulatory regions of the yeast alcohol oxidase 1 promoter are provided. Isolated polynucleotides, recombinant polynucleotides, vectors, expression cassettes and transformed cells containing the regulatory regions are disclosed. Proteins produced by the transformed cells are also provided.
    Type: Grant
    Filed: April 5, 2002
    Date of Patent: March 2, 2004
    Assignee: The Board of Regents of the University of Nebraska
    Inventors: Mehmet Inan, Michael M. Meagher, Andrew K. Benson
  • Patent number: 6638735
    Abstract: Expression cassettes for transforming Pichia ciferrii and their use are disclosed. The present invention relates to expression cassettes containing Pichia ciferrii ribosomal DNA fragment, CYHr gene resistant to cycloheximide, and a desired gene. Expression cassette further comprising Pichia ciferrii GAPDH promoter gene which allows an increase in the expression of the desired gene also provided. Moreover, the present invention provides a process for producing tetraacetyl phytosphingosine using transformed Pichia ciferrii cells with the expression cassettes in a higher yield.
    Type: Grant
    Filed: July 17, 2001
    Date of Patent: October 28, 2003
    Assignees: Doosan Corporation, Korea Institute of Science and Technology
    Inventors: Sang Ki Rhee, Jung Hoon Bae, Eui Sung Choi, Jung Hoon Sohn, Hyun Ah Kang, Chang Seo Park
  • Patent number: 6284521
    Abstract: Hansenulla californica yeast strain VKPM Y-2284 is capable of degrading polychlorinated biphenyls (PCBs). The strain may be employed to detoxicate environment media and PCB-containing industrial wastes. To produce biomass, the strain is incubated on media which contain carbon sources, nitrogen sources and mineral salts. The strain is cultivated by a subsurface method up to a titer from 5.0·106 to 1.0×107 cells per cu cm. The produced biomass is employed for degrading PCBs in concentrations from 106 to 105 cells per cu cm. The strain ensures from 30 to 50% reduction in PCB content in soil and water.
    Type: Grant
    Filed: September 20, 2000
    Date of Patent: September 4, 2001
    Assignee: Research Center for Toxicology and Hygienic Regulation of Biopreparation
    Inventors: Roman Vladimirovich Borovick, Gennady Alekseevich Zharikov, Vladimir Vladimirovich Kapranov
  • Patent number: 6204012
    Abstract: A method for producing a protein by culturing a cell capable of expressing the protein and which contains a methylotrophic yeast promoter for an enzyme of the methanol metabolic pathway controlling expression of the protein, in a fermentative batch process comprising a batch phase and a feeding phase, under conditions such that dissolved oxygen is continually present in the culture medium throughout the process, and about 1% to about 100% of the carbon source during the feeding phase is a sugar or sugar polymer, which sugar or sugar polymer is provided in such an amount that the sugar or sugar polymer is continually depleted by the cell and therefore is substantially undetectable in the culture medium; and isolating the protein on completion of the feeding phase.
    Type: Grant
    Filed: September 29, 1998
    Date of Patent: March 20, 2001
    Assignee: Roche Vitamins Inc.
    Inventors: Karsten Hellmuth, Rual Lopez-Ulibarri, Anne Françoise Mayer, Heinrich Winfried Schlieker, Adolphus van Loon
  • Patent number: 6204006
    Abstract: Microbial strains capable of producing enhanced levels of sphingosine, dihydrosphingosine, phytosphingosine and/or derivatives thereof are disclosed. Additionally, there are disclosed methods based on mutagenesis, or other selection techniques, whereby such strains can be produced. As a preferred example thereof, mutant strains of Pichia are provided that are capable of producing about 50% or more of such compounds than wild type strains.
    Type: Grant
    Filed: April 7, 1998
    Date of Patent: March 20, 2001
    Assignee: DSM, N.V.
    Inventors: Lex De Boer, Ingrid Francisca Caroline Van Der Wildt
  • Patent number: 6171828
    Abstract: The present invention discloses a method for culturing microorganisms having a methanol metabolic pathway in which an expression unit is introduced that comprises a target gene linked downstream from a promoter that can be induced by methanol; wherein, during the culturing period, and including the period during which methanol is continuously or periodically added, the rate of addition is adjusted to a rate equal to or less than the maximum methanol consumption rate of said microorganisms.
    Type: Grant
    Filed: March 4, 1997
    Date of Patent: January 9, 2001
    Assignee: Suntory Limited
    Inventors: Koji Magota, Tomohiro Rogi, Yasuyoshi Sakai, Nobuo Kato