Glutamic Acid; Glutamine Patents (Class 435/110)
  • Publication number: 20030003550
    Abstract: L-Glutamine is produced by culturing a coryneform bacterium which has L-glutamine producing ability and has been modified so that its intracellular glutamine synthetase activity should be enhanced, preferably which has been further modified so that its intracellular glutamate dehydrogenase activity should be enhanced, in a medium to produce and accumulate L-glutamine in the medium and collecting the L-glutamine.
    Type: Application
    Filed: February 5, 2002
    Publication date: January 2, 2003
    Applicant: AJINOMOTO CO. INC
    Inventors: Jun Nakamura, Hiroshi Izui, Kayo Moriguchi, Hiroki Kawashima, Tsuyoshi Nakamatsu, Osamu Kurahashi
  • Publication number: 20030003549
    Abstract: Novel DNA probe sequences for detection, by polymerase chain reaction, of human hepatitis B virus surface antigen mutant 145 (Glycine to Arginine) from serum samples. As a direct application, these specific DNA probes are immobilized on solid glass supports (gene chip) for detection of human hepatitis B virus surface antigen mutant 145 (Glycine to Arginine) by fluorescence.
    Type: Application
    Filed: July 28, 1999
    Publication date: January 2, 2003
    Inventors: CHONG-JIN OON, WEI-NING CHEN, AI-LIN LEONG, SHIUAN KOH
  • Publication number: 20020192772
    Abstract: A method for producing L-glutamic acid by fermentation, which comprises culturing a microorganism having L-glutamic acid-producing ability in a medium having pH of 5.0 or less, wherein a total content of an organic acid that inhibits growth of the microorganism at the pH is one at which the growth of the microorganism is not inhibited; and a method for producing L-glutamic acid by fermentation, which comprises culturing a microorganism having L-glutamic acid-producing ability at a first pH at which growth of the microorganism is not inhibited by an organic acid in a medium, and then culturing the microorganism at a second pH that is suitable for L-glutamic acid production by the microorganism and is lower than the first pH.
    Type: Application
    Filed: February 20, 2002
    Publication date: December 19, 2002
    Applicant: AJINOMOTO CO., INC.
    Inventors: Masakazu Sato, Naoki Akiyoshi
  • Publication number: 20020182688
    Abstract: A method for producing L-glutamic acid by fermentation, which comprises culturing a microorganism having L-glutamic acid-producing ability at a first pH that is suitable for growth of the microorganism, and then culturing the microorganism at a second pH that is suitable for L-glutamic acid production by the microorganism and is lower than the first pH.
    Type: Application
    Filed: February 20, 2002
    Publication date: December 5, 2002
    Applicant: AJINOMOTO CO., INC.
    Inventors: Hiroshi Izui, Yoshihiko Hara, Masakazu Sato, Naoki Akiyoshi
  • Patent number: 6489102
    Abstract: Disclosed is a process to construct multi-component biomolecule or cellular arrays suitable for use in SPR imaging studies of large molecule, cellular/molecular, and cell/cell interactions. The success of the procedure hinges on the use of a reversible protecting group to modify reversibly &ohgr;-functionalized alkanethiols self-assembled on metal substrates.
    Type: Grant
    Filed: December 3, 1999
    Date of Patent: December 3, 2002
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Robert M. Corn, Anthony G. Frutos, Jennifer M. Brockman
  • Publication number: 20020155552
    Abstract: Proteins expressed from within the prion protein genes of all animals and humans, “prionins”, against which reagents can be prepared for accurate pre-symptomatic diagnosis, for detecting latent TSE, for detecting TSE contamination of food, blood and blood products and for therapeutic treatment of Bovine spongiform encephalopathy (BSE) in cows, Scrapie disease in sheep and Creutzfeldt-Jakob syndrome in humans, are revealed.
    Type: Application
    Filed: February 16, 1999
    Publication date: October 24, 2002
    Inventors: JOHANNA BERGMANN, ENRIQUE PREDDIE
  • Publication number: 20020155553
    Abstract: The present invention provides a human vesicle binding protein (MVBP) and polynucleotides which identify and encode MVBP. The invention also provides expression vectors, host cells, agonists, antibodies and antagonists. In addition, the invention provides methods for producing MVBP and for treating or preventing disorders associated with expression of MVBP.
    Type: Application
    Filed: July 26, 1999
    Publication date: October 24, 2002
    Applicant: INCYTE GENOMICS, INC.
    Inventors: OLGA BANDMAN, PHILLIP R. HAWKINS
  • Publication number: 20020137150
    Abstract: L-Glutamic acid is produced by culturing a coryneform bacterium having L-glutamic acid producing ability, in which trehalose synthesis ability is decreased or deleted by, for example, disrupting a gene coding for trehalose-6-phosphate synthase, a gene coding for maltooligosyltrehalose synthase, or both of these genes to produce and accumulate L-glutamic acid in the medium, and collecting the L-glutamic acid from the medium.
    Type: Application
    Filed: July 2, 2001
    Publication date: September 26, 2002
    Applicant: AJINOMOTO CO., INC.
    Inventors: Hiromi Ohtaki, Jun Nakamura, Hiroshi Izui, Tsuyoshi Nakamatsu
  • Publication number: 20020127662
    Abstract: The invention relates to a process for the preparation of L-glutamic acid by fermentation of coryneform bacteria, in which bacteria in which the nucleotide sequence which codes for D-alanine racemase (alr gene) is attenuated are employed, wherein the following steps are carried out:
    Type: Application
    Filed: July 23, 2001
    Publication date: September 12, 2002
    Inventors: Lothar Eggeling, Karin Krumbach, Hermann Sahm, Georg Thierbach
  • Publication number: 20020102666
    Abstract: The invention provides a novel prostate cell-surface antigen, designated Prostate Stem Cell Antigen (PSCA), which is widely over-expressed across all stages of prostate cancer, including high grade prostatic intraepithelial neoplasia (PIN), androgen-dependent and androgen-independent prostate tumors.
    Type: Application
    Filed: May 14, 2001
    Publication date: August 1, 2002
    Applicant: The Regents of the University of California
    Inventors: Robert E. Reiter, Owen N. Witte, Douglas C. Saffran, Aya Jakobovits
  • Publication number: 20020072099
    Abstract: The invention relates to polynucleotides that contain poLynucleotide sequences coding for the genes sucC and sucD, selected from the group
    Type: Application
    Filed: April 20, 2001
    Publication date: June 13, 2002
    Inventors: Bettina Mockel, Walter Pfefferle, Achim Marx
  • Publication number: 20020042106
    Abstract: The invention relates to a genetically modified coryneform bacterium, the cma gene of which is amplified, and an isolated polynucleotide which codes for cyclopropane-mycolic acid synthase from coryneform bacteria, and also a method for the fermentative preparation of L-amino acids with amplification of the cma gene in the bacteria and the use of the polynucleotide as a primer or hydridization probe.
    Type: Application
    Filed: May 1, 2001
    Publication date: April 11, 2002
    Inventors: Madhavan Nampoothiri K., Bettina Mockel, Lothar Eggeling, Hermann Sahm
  • Patent number: 6368831
    Abstract: A method of treating a hyperproliferative disorder in a subject in need of such treatment, comprising administering to said subject, in combination, a treatment effective amount of: (a) a ceramide-generating retinoid such as fenretinide or a pharmaceutically acceptable salt thereof; and (b) at least one (and in certain embodiments at least two) ceramide degredation inhibitor, such as compounds selected from the group consisting of (i) glucosylceramide synthesis inhibitors and/or 1-acylceramide synthesis inhibitors, (ii) sphingosine-1-phosphate synthesis inhibitors, and (iii) protein kinase C inhibitors. A preferred glucosyl ceramide synthesis inhibitor is 1-phenyl-2-palmitoylamino-3-morpholino-1-propanol. A preferred sphingosine-1-phosphate synthesis inhibitor is D-erythro-N,N-dimethylsphingosine. A preferred protein kinase C inhibitor is L-threo-dihydrosphingosine.
    Type: Grant
    Filed: December 23, 1999
    Date of Patent: April 9, 2002
    Assignee: Childrens Hospital Los Angeles
    Inventors: Barry J. Maurer, C. Patrick Reynolds
  • Publication number: 20020039779
    Abstract: Genes each encoding a novel transcriptional regulator having a bromodomain have been successfully isolated from a human testis cDNA library using primers prepared based on an EST sequence found using the bromodomain sequence of the transcriptional regulator. These genes are structurally analogous to each other.
    Type: Application
    Filed: April 20, 2001
    Publication date: April 4, 2002
    Applicant: Chugai Research Institute for Molecular Medicine, Inc. a Japanese corporation
    Inventor: Michael H. Jones
  • Patent number: 6338956
    Abstract: A microorganism is utilized to fermentatively produce useful substances such as amino acids by cultivating the microorganism in a medium to allow a fermentative product to be produced and accumulated in the medium, and collecting the fermentative product, wherein the microorganism to be used is modified by introduction of at least one of a gene coding for a heat shock protein and a gene coding for a &sgr; factor which specifically functions for the heat shock protein gene to enhance expression amount of the heat shock protein in cells, whereby the microorganism is allowed to have added resistance to stress which would otherwise restrain growth of the microorganism and/or production of the fermentative product.
    Type: Grant
    Filed: August 8, 2000
    Date of Patent: January 15, 2002
    Assignee: Ajinomoto Co., Inc.
    Inventors: Eiichiro Kimura, Yoshimi Kikuchi, Yoshio Kawahara, Shinya Goto, Osamu Kurahashi, Tsuyoshi Nakamatsu
  • Publication number: 20020004231
    Abstract: A method for producing L-glutamic acid which comprises culturing a microorganism belonging to the genus Klebsiella, Erwinia or Pantoea and having an ability to produce L-glutamic acid in a culture medium, and collecting produced L-glutamic acid from the culture medium. The microbial strain used is preferably a strain which decreases in or is deficient in an activity of an enzyme catalyzing a reaction branching from a pathway for L-glutamic acid biosynthesis and producing a compound other than L-glutamic acid, or a strain which increase in an activity of an enzyme catalyzing a reaction for L-glutamic acid biosynthesis.
    Type: Application
    Filed: December 18, 2000
    Publication date: January 10, 2002
    Applicant: AJINOMOTO CO., INC.
    Inventors: Mika Moriya, Hiroshi Izui, Eiji Ono, Kazuhiko Matsui, Hisao Ito, Yoshihiko Hara
  • Patent number: 6331419
    Abstract: L-Glutamic acid is produced by culturing in a liquid culture medium a microorganism belonging to the genus Enterobacter or Serratia. Further, the microorganism having an ability to produce L-glutamic acid, which increases in an activity of enzyme catalyzing a reaction for L-glutamic acid biosynthesis, or which decreases in or is deficient in an activity of an enzyme catalyzing a reaction branching from a pathway for L-glutamic acid biosynthesis and producing a compound other than L-glutamic acid, and collecting produced L-glutamic acid from the culture medium.
    Type: Grant
    Filed: March 18, 1999
    Date of Patent: December 18, 2001
    Assignee: Ajinomoto Co., Inc.
    Inventors: Mika Moriya, Hiroshi Izui, Eiji Ono, Kazuhiko Matsui, Hisao Ito, Yoshihiko Hara
  • Publication number: 20010049128
    Abstract: A process for the fermentative production of L-amino acids using bacteria, wherein L-proline is added to the fermentation broth as an osmoprotective substance in order to suppress the effects on the cells of the hyperosmotic stress.
    Type: Application
    Filed: October 27, 1999
    Publication date: December 6, 2001
    Inventors: ULRICH BECKER, HEIDI PETER, SUSANNE MORBACH, ILONA WALGER, REINHARD KRAMER, WALTER PFEFFERLE
  • Publication number: 20010019836
    Abstract: L-Glutamic acid is produced by culturing in a liquid culture medium a microorganism belonging to the genus Enterobacter or Serratia and having an ability to produce L-glutamic acid, which increases in an activity of enzyme catalyzing a reaction for L-glutamic acid biosynthesis, or which decreases in or is deficient in an activity of an enzyme catalyzing a reaction branching from a pathway for L-glutamic acid biosynthesis and producing a compound other than L-glutamic acid, and collecting produced L-glutamic acid from the culture medium.
    Type: Application
    Filed: February 16, 2001
    Publication date: September 6, 2001
    Applicant: AJINOMOTO CO., INC
    Inventors: Mika Moriya, Hiroshi Izui, Eiji Ono, Kazuhiko Matsui, Hisao Ito, Yoshihiko Hara
  • Patent number: 6280981
    Abstract: The invention is provides compositions and methods for monitoring subcellular compartments such as organelles by energy transfer techniques that do not require specific intermolecular affinity binding events between energy transfer donor and energy transfer acceptor molecules. Provided are methods for assaying cellular membrane potential, including mitochondrial membrane potential, by energy transfer methodologies including fluorescence resonance energy transfer (FRET). Diagnostic and drug screening assays are also provided.
    Type: Grant
    Filed: February 23, 2000
    Date of Patent: August 28, 2001
    Assignee: Mitokor
    Inventors: James A. Dykens, Gönül Veliçelebi, Soumitra S. Ghosh
  • Publication number: 20010016341
    Abstract: The present invention relates to a process for preparing &ggr;-polyglutamic acid (&ggr;-PGA) from high-viscous culture broth, more particularly, to an economical and efficient process for preparing &ggr;-polyglutamic acid from high-viscous culture broth with easy removal of microorganisms and a subsequent concentrating process employing a filtration membrane. The present invention provides the process for preparing &ggr;-polyglutamic acid from high-viscous culture broth which comprises the steps of: culturing &ggr;-polyglutamic acid-producing microorganism for 15-30 hours under condition of pH 5.0-7.5 and 30-40° C. to obtain high-viscous culture broth with a concentration of 20-30 g/L; removing microorganism from the high-viscous culture broth thus obtained by adjusting pH to 2-4 or 7-9 and centrifuging at 3,000-9,000 rpm for 10-50 minutes; and, obtaining &ggr;-polyglutamic acid by concentrating the culture broth employing filter and precipitating &ggr;-polyglutamic acid by addition of alcohol.
    Type: Application
    Filed: December 28, 2000
    Publication date: August 23, 2001
    Inventors: Ho-Nam Chang, Sang-Yup Lee, Jin-Hwan Do, Sun-Hoon Kwon
  • Publication number: 20010014446
    Abstract: The present invention relates to a method for the determination of the presence and amount of DNA in a sample. The method is based on the use of a nucleic acid template dependent enzyme in combination with a random primer to generate an enzymatic product which incorporates a binding species and a detectable species covalently linked.
    Type: Application
    Filed: February 13, 1998
    Publication date: August 16, 2001
    Inventors: JEFFREY A. HEROUX, MARTA V. CORCORAN, SAVITHA M. RAO
  • Patent number: 6268188
    Abstract: Thermostable transaminase and aminotransferase enzymes derived from various ammonife and aquifex organisms are disclosed. The enzymes are produced from native or recombinant host cells and can be utilized in the pharmaceutical, agricultural and other industries.
    Type: Grant
    Filed: October 4, 1999
    Date of Patent: July 31, 2001
    Assignee: Diversa Corporation
    Inventors: Patrick V. Warren, Ronald V. Swanson
  • Patent number: 6197559
    Abstract: A method for producing L-glutamic acid which comprises culturing a microorganism belonging to the genus Klebsiella, Erwinia or Pantoea and having an ability to produce L-glutamic acid in a culture medium, and collecting produced L-glutamic acid from the culture medium. The microbial strain used is preferably a strain which decreases in or is deficient in an activity of an enzyme catalyzing a reaction branching from a pathway for L-glutamic acid biosynthesis and producing a compound other than L-glutamic acid, or a strain which increase in an activity of an enzyme catalyzing a reaction for L-glutamic acid biosynthesis.
    Type: Grant
    Filed: March 18, 1999
    Date of Patent: March 6, 2001
    Assignee: Ajinomoto Co., Inc.
    Inventors: Mika Moriya, Hiroshi Izui, Eiji Ono, Kazuhiko Matsui, Hisao Ito, Yoshihiko Hara
  • Patent number: 6143552
    Abstract: The present invention provides a process for producing an L-amino acid which comprises culturing in a nutrient medium a microorganism which is capable of producing the L-amino acid and which can not grow in a synthetic medium containing said L-amino acid as the sole nitrogen source in an amount of 5 mg/ml or below, allowing the L-amino acid to accumulate in the culture, and recovering the L-amino acid from the culture.
    Type: Grant
    Filed: March 11, 1999
    Date of Patent: November 7, 2000
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Kazuyuki Okamoto, Masato Ikeda, Kuniki Kino
  • Patent number: 6133018
    Abstract: 2-Aminopropane is used as the amine donor in the stereoselective synthesis of a chiral amine from a ketone with a transaminase. In a typical embodiment, (S)-1-methoxy-2-aminopropane is prepared by bringing methoxyacetone into contact with a transaminase in the presence of 2-aminopropane as an amine donor until a substantial amount of methoxyacetone is converted to (S)-1-methoxy-2-aminopropane and 2-aminopropane is converted to acetone. In a second embodiment, L-alanine is prepared by bringing pyruvic acid into contact with a transaminase in the presence of 2-aminopropane as an amine donor.
    Type: Grant
    Filed: March 10, 1999
    Date of Patent: October 17, 2000
    Assignee: Celgro
    Inventors: Wei Wu, Mohit B. Bhatia, Craig M. Lewis, Wei Lang, Alice L. Wang, George W. Matcham
  • Patent number: 6110714
    Abstract: An isolated mutant microorganism which belongs to the genus Escherichia, which exhibits valine sensitivity which is indicated by failure to grow in an M9 minimum growth medium containing 50 mg/liter of valine, and which has amplified citrate synthase activity and phosphoenolpyruvate carboxylase activity and which has L-glutamic acid-productivity.
    Type: Grant
    Filed: February 20, 1998
    Date of Patent: August 29, 2000
    Assignee: Ajinomoto Co., Inc.
    Inventors: Kazuhiko Matsui, Kumiko Fukase, Nobuharu Tsujimoto
  • Patent number: 6110713
    Abstract: A method of producing glutamic acid by culturing an amino acid auxotroph of a biologically pure strain of Bacillus methanolicus which exhibits sustained growth at 50.degree. C. using methanol as a carbon and energy source and requiring vitamin B.sub.12 and biotin is provided.
    Type: Grant
    Filed: January 22, 1997
    Date of Patent: August 29, 2000
    Assignee: Regents of the University of Minnesota
    Inventors: Richard S. Hanson, Michael C. Flickinger, Patricia Olson, Won Hur, Nuhza Al-Tahoo, Craig Bremmon
  • Patent number: 6083728
    Abstract: A method of producing glutamic acid by culturing a biologically pure wild type Bacillus methanolicus which exhibits sustained growth at 50.degree. C. using methanol as a carbon and energy source and requiring vitamin B.sub.12 and biotin is provided.
    Type: Grant
    Filed: October 17, 1997
    Date of Patent: July 4, 2000
    Assignee: Regents of the University of Minnesota
    Inventors: Frederick J. Schendel, Richard Dillingham, Richard S. Hanson, Konosuke Sano, Kazuhiko Matsui
  • Patent number: 6063615
    Abstract: Disclosed is a process for preparing acylated amino esters and a process for preparing optically active amino esters from racemic amino esters with a carboxylic ester as acylating agent, whose acid component has a halogen, nitrogen, oxygen or sulfur atom neighboring the carbonyl carbon atom, in the presence of a hydrolase selected from the group of amidase, protease, esterase and lipase, and subsequent separation of the enantioselectively acylated amino ester from the non-acylated other enantiomer of the amino ester.
    Type: Grant
    Filed: June 25, 1998
    Date of Patent: May 16, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Rainer Sturmer, Klaus Ditrich, Wolfgang Siegel
  • Patent number: 5977331
    Abstract: Disclosed are coryneform L-glutamic acid-producing bacteria deficient in .alpha.-ketoglutarate dehydrogenase, a method of producing L-glutamic acid by using the bacteria, a gene coding for an enzyme having .alpha.-KGDH activity originating from coryneform L-glutamic acid-producing bacteria, recombinant DNA containing the gene, coryneform bacteria harboring the recombinant DNA, and a method of producing L-lysine by using bacteria harboring the recombinant DNA and having L-lysine productivity.
    Type: Grant
    Filed: December 12, 1996
    Date of Patent: November 2, 1999
    Assignee: Ajinomoto Co., Inc.
    Inventors: Yoko Asakura, Yoshihiro Usuda, Nobuharu Tsujimoto, Eiichiro Kimura, Chizu Abe, Yoshio Kawahara, Tsuyoshi Nakamatsu, Osamu Kurahashi
  • Patent number: 5928909
    Abstract: The regioselective and chemoselective hydrolysis of an .alpha.-ester group of an amino acid diester using pig liver esterase enzyme (PLE) is disclosed. The amino acid diesters may be either N-protected or unprotected and the diester groups may be the same or different. In particular, the preparation of a number of .gamma.-ester glutamates and .beta.-ester aspartates are provided.
    Type: Grant
    Filed: January 26, 1998
    Date of Patent: July 27, 1999
    Assignee: NSC Technologies LLC
    Inventors: Indra Prakash, David J. Ager, David P. Pantaleone
  • Patent number: 5919670
    Abstract: The present invention provides a process for producing an L-amino acid which comprises culturing in a nutrient medium a microorganism which is capable of producing the L-amino acid and which can not grow in a synthetic medium containing said L-amino acid as the sole nitrogen source in an amount of 5 mg/ml or below, allowing the L-amino acid to accumulate in the culture, and recovering the L-amino acid from the culture.
    Type: Grant
    Filed: June 18, 1998
    Date of Patent: July 6, 1999
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Kazuyuki Okamoto, Masato Ikeda, Kuniki Kino
  • Patent number: 5908768
    Abstract: A fermentative process for producing L-glutamic acid efficiently and at low cost is disclosed. Also disclosed are microorganisms having improved ability to produce L-glutamic acid. These microorganisms belong to the genus Escherichia, have resistance to an aspartic acid antimetabolite, and are deficient in .alpha.-ketoglutaric acid dehydrogenase activity. The process comprises cultivating one of these microorganisms in a liquid medium, accumulating L-glutamic acid in the culture medium, and collecting L-glutamic acid. In particular, E. coli AF13199 (FERM BP-5807).
    Type: Grant
    Filed: April 23, 1997
    Date of Patent: June 1, 1999
    Assignee: Ajinomoto Co., Inc.
    Inventors: Eiji Ono, Nobuharu Tsujimoto, Hiroshi Izui, Kazuhiko Matsui
  • Patent number: 5876983
    Abstract: A phosphoenolpyruvate carboxylase gene, which has mutation such as mutation to replace 625th glutamic acid from the N-terminus of phosphoenolpyruvate carboxylase with lysine, mutation to replace 438th arginine from the N-terminus with cysteine and the like, is introduced into Escherichia coli or coryneform bacteria, so as to produce a phosphoenolpyruvate carboxylase which is not substantially inhibited by aspartic acid, thereby amino acid is efficiently produced.
    Type: Grant
    Filed: April 29, 1996
    Date of Patent: March 2, 1999
    Assignee: Ajinomoto Co., Inc.
    Inventors: Masakazu Sugimoto, Tomoko Suzuki, Hiroshi Matsui, Katsura Izui
  • Patent number: 5869300
    Abstract: A method for producing L-glutamic acid, comprising inoculating a microorganism having an ability to produce L-glutamic acid, in a liquid medium containing a carbon source and a nitrogen source, conducting continuous L-glutamic acid fermentation in which both a carbon source and a nutrient having an effect of promoting bacterial growth are fed so as to make the microorganism grow, and then collecting L-glutamic acid produced and accumulated in a culture broth.
    Type: Grant
    Filed: November 20, 1997
    Date of Patent: February 9, 1999
    Assignee: Ajinomoto Co., Inc.
    Inventors: Tatsuya Yoshioka, Toshimasa Ishii, Yoshio Kawahara, Yosuke Koyama, Eiko Shimizu
  • Patent number: 5846790
    Abstract: A mutant strain having an ability to produce L-glutamic acid in the absence of any biotin action-suppressing agent in a medium containing an excessive amount of biotin is obtained by giving temperature sensitivity with respect to a biotin action-suppressing agent to a coryneform L-glutamic acid-producing bacterium. This strain is cultivated in a liquid medium to produce and accumulate L-glutamic acid in the medium. A mutant strain having an ability to produce L-lysine and L-glutamic acid in the absence of any biotin action-suppressing agent in a medium containing an excessive amount of biotin is obtained by giving temperature sensitivity with respect to a biotin action-suppressing agent and giving L-lysine productivity to a coryneform L-glutamic acid-producing bacterium. This strain is cultivated in a liquid medium to simultaneously produce and accumulate L-lysine and L-glutamic acid in the medium.
    Type: Grant
    Filed: February 18, 1997
    Date of Patent: December 8, 1998
    Assignee: Ajinomoto Co., Inc.
    Inventors: Eiichiro Kimura, Yoko Asakura, Akinori Uehara, Sumio Inoue, Yoshio Kawahara, Yasuhiko Yoshihara, Tsuyoshi Nakamatsu
  • Patent number: 5830716
    Abstract: A method of producing a target substance by microbial fermentation, where the natural ability of the microorganism to produce NADPH from NADH is increased. The present method is useful for producing a wide variety of materials, such as amino acids, antibiotics, vitamins, growth factors and other physiologically active substances. The microorganism is modified to increase production of NADPH from NADH in order to increase the amount of an active substance in the culture medium. The modification of the microorganism results in the increased production of the amount of nicotinamide nucleotide transhydrogenase expressed by the microorganism. Further, the increase in the production of NADPH from NADH is increased by increasing the number of copies of a gene encoding a nicotinamide nucleotide transhydrogenase enzyme. The copies of the gene are so produced to a number effective to increase the amount of the enzyme expressed by the microorganism, thereby increasing the enzyme activity of the microorganism.
    Type: Grant
    Filed: April 29, 1996
    Date of Patent: November 3, 1998
    Assignee: Ajinomoto Co., Inc.
    Inventors: Hiroyuki Kojima, Kazuhiko Totsuka
  • Patent number: 5824534
    Abstract: An aminopeptidase is provided which efficiently decomposes a low-molecular-weight peptide containing glutamic acid or aspartic acid in its sequence. A method of hydrolyzing a peptide or protein by use of the aminopeptidase is also provided. Aminopeptidase GX is derived from germinated soybean cotyledons and releases glutamic acid or aspartic acid from a peptide or protein containing glutamic acid or aspartic acid at the N-terminal end and is used to hydrolyse peptides or proteins.
    Type: Grant
    Filed: March 7, 1997
    Date of Patent: October 20, 1998
    Assignee: Ajinomoto Co., Inc.
    Inventors: Minao Asano, Misako Kawai, Tetsuya Miwa, Noriki Nio
  • Patent number: 5817474
    Abstract: A method for determining three-dimensional structural information of a protein which involves producing the protein in a form substantially labeled with .sup.13 C of .sup.15 N or both substantially labeled with .sup.15 N and .sup.13 C and partially labeled with .sup.2 H and subjecting the protein to nuclear magnetic resonance spectroscopic analysis. The isotopically labeled protein is produced by a method which involves producing a substantially labeled microbial protein hydrolysate, subjecting the protein hydrolysate to cation exchange chromatography to produce a partially purified labeled amino acid mixture, subjecting the partially purified labeled amino acid mixture to anion exchange chromatography to produce a purified labeled amino mixture and supplementing the purified labeled amino acid mixture with isotopically labeled cysteine and optionally with isotopically labeled glutamine and asparagine.
    Type: Grant
    Filed: July 16, 1996
    Date of Patent: October 6, 1998
    Assignee: Martek Biosciences Corporation
    Inventor: Jonathan Miles Brown
  • Patent number: 5773261
    Abstract: The regioselective and chemoselective hydrolysis of an .alpha.-ester group of an amino acid diester using pig liver esterase enzyme (PLE) is disclosed. The amino acid diesters may be either N-protected or unprotected and the diester groups may be the same or different. In particular, the preparation of a number of .gamma.-ester glutamates and .beta.-ester aspartates are provided.
    Type: Grant
    Filed: August 26, 1996
    Date of Patent: June 30, 1998
    Assignee: The NutraSweet Company
    Inventors: Indra Prakash, David J. Ager, David P. Pantaleone
  • Patent number: 5763230
    Abstract: The present invention relates to a process for the fermentative production of an amino acid which comprises the use of phosphorous limited or phosphorous/carbon double limited growth conditions during the fermentative production.
    Type: Grant
    Filed: September 13, 1996
    Date of Patent: June 9, 1998
    Assignee: Triple-A B.V. p/a Produkschap voor Veevoedor
    Inventors: J. A. De Hollander, F. R. Eswilder, J. A. C. Noordover
  • Patent number: 5750360
    Abstract: The invention encompasses methods of detecting and/or quantifying .epsilon.(.gamma.-glutamyl)lysine isodipeptide by catalytically releasing lysine, then measuring free lysine.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: May 12, 1998
    Assignee: LXR Biotechnology Inc.
    Inventors: Laszlo Fesus, Mauro Piacentini
  • Patent number: 5728555
    Abstract: The present invention relates to materials and methods for production of natural and unnatural D-amino acids. In particular, the present invention relates to a fermentation method for the production of D-amino acids using recombinant host cells.Specifically, the invention relates to a method for producing a D-amino acid in a cell, comprising:(a) incorporating into the cell a D-aminotransferase gene and a L-aminodeaminase gene;(b) culturing the cell in a cell culture medium; and(c) isolating the D-amino acid from the cell culture medium.The invention also relates to a method for producing D-phenylalanine in a cell, comprising:(a) incorporating into the cell a D-aminotransferase gene, a L-aminodeaminase gene and means for increasing production of phenylpyruvate;(b) culturing the cell in a cell culture medium; and(c) isolating the D-phenylalanine from the cell culture medium.The invention also relates to the preparation of recombinant cells for use in the production of enantiomerically pure D-amino acids.
    Type: Grant
    Filed: September 30, 1996
    Date of Patent: March 17, 1998
    Assignee: Monsanto Company
    Inventors: Ian G. Fotheringham, Paul P. Taylor, Jennifer L. Ton
  • Patent number: 5714355
    Abstract: DSM 9771 is a mutant of DSM 7330 which was obtained under selective pressure. Its enzymatic activity is higher by a factor of 2.3 than that of its parent organism. In the presence of an inducer, this activity may be farther increased by a factor of 2.7. The reaction catalyzed by this microorganism or enzymes therefrom is the enantioselective conversion of a D-5-monosubstituted hydantoin or an L-5-monosubstituted hydantoin or a D-N-carbamoyl amino acid or an L-N-carbamoyl amino acid to a corresponding L-.alpha.-amino acid.
    Type: Grant
    Filed: May 29, 1996
    Date of Patent: February 3, 1998
    Assignee: Degussa Aktiengesellschaft
    Inventors: Fritz Wagner, Britta Hantke, Thomas Wagner, Karlheinz Drauz, Andreas Bommarius
  • Patent number: 5705370
    Abstract: Culturing an L-amino acid producing microorganism belonging to the genus Brevibacterium or Corynebacterium and having a resistance to a peptide containing glutamic acid or aspartic acid gives L-amino acids in high yield.
    Type: Grant
    Filed: May 12, 1995
    Date of Patent: January 6, 1998
    Assignee: Ajinomoto Company, Inc.
    Inventors: Takayasu Tsuchida, Haruo Uchibori, Hiroshi Takeuchi, Mitsuyoshi Seki
  • Patent number: 5643769
    Abstract: An object of the present invention is to provide a process for producing an optically active .gamma.-hydroxy-L-glutamic acid advantageously on an industrial scale. The present invention provides a process for producing an optically active .gamma.-hydroxy-L-glutamic acid, which comprises allowing biocatalyst I, an amino group donor, pyruvic acid and glyoxylic acid to coexist in an aqueous medium to form the optically active .gamma.-hydroxy-L-glutamic acid in the aqueous medium, and collecting the formed optically active .gamma.-hydroxy-L-glutamic acid therefrom, said biocatalyst I having activity of forming the optically active .gamma.-hydroxy-L-glutamic acid from pyruvic acid and glyoxylic acid in the presence of an amino group donor. The present invention also provides a process for producing an optically active .gamma.
    Type: Grant
    Filed: July 11, 1995
    Date of Patent: July 1, 1997
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Ryoichi Katsumata, Shinichi Hashimoto
  • Patent number: 5627044
    Abstract: A nutrient medium comprising amino acids and other substrates used by mammalian or insect cells in protein synthesis that are either double-labeled with .sup.2 H and .sup.13 C or triple-labeled with .sup.2 H, .sup.13 C and .sup.15 N is disclosed. The invention is also directed to a method for producing the nutrient medium.
    Type: Grant
    Filed: September 27, 1994
    Date of Patent: May 6, 1997
    Assignee: Martek Biosciences Corporation
    Inventor: Jonathan M. Brown
  • Patent number: 5624955
    Abstract: A pharmaceutical unit dosage form comprising an amount of a compound of the formula: ##STR1## is provided wherein R.sup.1 is a (C.sub.1 -C.sub.20)alkyl group, a (C.sub.6 -C.sub.12)aryl group, or a C.sub.3 -C.sub.18)cycloalkyl group and R.sup.2 is H or a (C.sub.1 -C.sub.19)alkyl group, a (C.sub.6 -C.sub.12)aryl group, a (C.sub.7 -C.sub.13)arylalkoxy group, a (C.sub.1 -C.sub.6)alkyoxy group, a (C.sub.3 -C.sub.18)cycloalkyl group, a ##STR2## group, or a --CH(R.sup.3)NH.sub.2 group wherein R.sup.3 is a side chain of a natural amino acid, and the pharmaceutically acceptable salts thereof; in combination with a pharmaceutically acceptable carrier, wherein said amount is effective to increase the concentration of glutathione in tissue.
    Type: Grant
    Filed: May 3, 1995
    Date of Patent: April 29, 1997
    Assignee: Regents of the University of Minnesota
    Inventors: Herbert T. Nagasawa, William B. Rathbun, Jonathan F. Cohen
  • Patent number: RE37187
    Abstract: An aminopeptidase is provided which efficiently decomposes a low-molecular-weight peptide containing glutamic acid or aspartic acid in its sequence. A method of hydrolyzing a peptide or protein by use of the aminopeptidase is also provided. Aminopeptidase GX is derived from germinated soybean cotyledons and releases glutamic acid or aspartic acid from a peptide or protein containing glutamic acid or aspartic acid at the N-terminal end and is used to hydrolyse peptides or proteins.
    Type: Grant
    Filed: February 9, 2000
    Date of Patent: May 22, 2001
    Assignee: Ajinomoto Co., Inc.
    Inventors: Minao Asano, Misako Kawai, Tetsuya Miwa, Noriki Nio