Patents by Inventor Katsuhiko Kitamoto
Katsuhiko Kitamoto 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).
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Patent number: 8383798Abstract: This invention provides: DNA encoding cellulase enzymes from intestinal symbiotic protists of the insects of Reticulitermes speratus, Hodotermopsis sjostedti, Neotermes koshunensis, Mastotermes darwiniensis, and Cryptocercidae, comprising the nucleotide sequences as shown in SEQ ID NOS:1 to 140; an expression system for the DNA; and a method for producing the cellulase enzymes using the expression system.Type: GrantFiled: January 18, 2008Date of Patent: February 26, 2013Assignees: Riken, The University of TokyoInventors: Shigeharu Moriya, Toshiaki Kudo, Tetsushi Inoue, Nemuri Todaka, Katsuhiko Kitamoto, Manabu Arioka, Junichi Maruyama
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Patent number: 8043851Abstract: Disclosed is a polypeptide shown in the following in (A), and a protein dimer neoculin comprising the polypeptide Neoculin Acidic Subunit (NAS) and the polypeptide Neoculin Basic Subunit (NBS) and having a taste-modifying activity: (A) a polypeptide comprising an amino acid sequence shown in SEQ ID NO.2 in the sequence listing.Type: GrantFiled: October 1, 2010Date of Patent: October 25, 2011Assignee: Mitsukan Group CorporationInventors: Keiko Abe, Tomiko Asakura, Hiroyuki Sorimachi, Tazuko Uenoyama, Kenichiro Nakajima, Katsuhiko Kitamoto, Junichi Maruyama, Mikiya Kishi
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Publication number: 20110020926Abstract: Disclosed is a polypeptide shown below in (A) or (B), a protein dimer neoculin comprising the polypeptide Neoculin Acidic Subunit (NAS) and the polypeptide Neoculin Basic Subunit (NBS) and having a taste-modifying activity: (A) a polypeptide comprising an amino acid sequence shown in SEQ ID NO.2 in the sequence listing; (B) a polypeptide comprising an amino acid sequence with the substitution, deletion, insertion, addition or inversion of one or several amino acids in the amino acid sequence shown in SEQ ID NO. 2 in the sequence listing, which polypeptide can form the neoculin dimer having a taste-modifying activity together with the polypeptide NBS.Type: ApplicationFiled: October 1, 2010Publication date: January 27, 2011Inventors: Keiko ABE, Tomiko Asakura, Hiroyuki Sorimachi, Tazuko Uenoyama, Kenichiro Nakajima, Katsuhiko Kitamoto, Junichi Maruyama, Mikiya Kishi
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Publication number: 20100221807Abstract: This invention provides a cellulase enzyme derived from intestinal symbiotic protists of insects selected from the group consisting of Reticulitermes speratus, Hodotermopsis sjostedti, Neotermes koshunensis, Mastotermes darwiniensis, and Cryptocercidae and comprising an amino acid sequence encoded by a nucleotide sequence selected from the group consisting of the nucleotide sequences as shown in SEQ ID NOS:1 to 140 and nucleotide sequences having 90% or higher identity therewith, a mixture of two or more said enzymes, a processed matter of said enzyme or mixture, DNA encoding said enzyme and an expression system thereof, and a method for producing said enzyme.Type: ApplicationFiled: January 18, 2008Publication date: September 2, 2010Applicants: RIKEN, The University of TokyoInventors: Shigeharu Moriya, Toshiaki Kudo, Tetsushi Inoue, Nemuri Todaka, Katsuhiko Kitamoto, Manabu Arioka, Manabu Arioka, Junichi Maruyama
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Patent number: 7763444Abstract: It is intended to provide koji mold-origin phospholipase A2 and a DNA encoding it. Namely, phospholipase A2 comprising the following protein (a) or (b): (a) a protein having an amino acid sequence represented by SEQ ID NO: 1 or 2; and (b) a protein having an amino acid sequence derived from an amino acid sequence represented by SEQ ID NO: 1 or 2 by a partial modification and serving as phospholipase A2.Type: GrantFiled: June 23, 2009Date of Patent: July 27, 2010Assignees: National Institute of Technology and Evaluation, National Institute of Advanced Industrial Science and Technology, National Research Institute of BrewingInventors: Katsuhiko Kitamoto, Manabu Arioka, Shotaro Yamaguchi, Masayuki Machida, Keietsu Abe, Katsuya Gomi, Kiyoshi Asai, Motoaki Sano, Taishin Kin, Hideki Nagasaki, Akira Hosoyama, Osamu Akita, Naotake Ogasawara, Satoru Kuhara
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Publication number: 20090263888Abstract: It is intended to provide koji mold-origin phospholipase A2 and a DNA encoding it. Namely, phospholipase A2 comprising the following protein (a) or (b): (a) a protein having an amino acid sequence represented by SEQ ID NO: 1 or 2; and (b) a protein having an amino acid sequence derived from an amino acid sequence represented by SEQ ID NO: 1 or 2 by a partial modification and serving as phospholipase A2.Type: ApplicationFiled: June 23, 2009Publication date: October 22, 2009Applicants: National Institute of Technology and Evaluation, Natinal Institute of Advanced Industrial Science and Technology, National Research Institute of BrewingInventors: Katsuhiko Kitamoto, Manabu Arioka, Shotaro Yamaguchi, Masayuki Machida, Keietsu Abe, Katsuya Gomi, Kiyoshi Asai, Motoaki Sano, Taishin Kin, Hideki Nagasaki, Akira Hosoyama, Osamu Akita, Naotake Ogasawara, Satoru Kuhara
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Publication number: 20080305522Abstract: It is an object of the invention to find a substance with a better taste-modifying function and determine the structure of the taste-modifying substance, as well as to elucidate the structure thereof at a gene level and determine the primary structure of the substance and obtain the gene encoding the substance. Additionally, it is an object of the invention to provide a novel taste-modifying composition characteristically containing the taste-modifying substance. Specifically, the invention provides the polypeptide shown below in (A) or (B), a protein dimer neoculin comprising the polypeptide NAS and the polypeptide NBS and having a taste-modifying activity: (A) a polypeptide comprising an amino acid sequence shown in SEQ ID NO.2 in the sequence listing; (B) a polypeptide comprising an amino acid sequence with the substitution, deletion, insertion, addition or inversion of one or several amino acids in the amino acid sequence shown in SEQ ID NO.Type: ApplicationFiled: January 27, 2005Publication date: December 11, 2008Inventors: Keiko Abe, Tomiko Asakura, Hiroyuki Sorimachi, Tazuko Uenoyama, Kenichiro Nakajima, Katsuhiko Kitamoto, Junichi Maruyama, Mikiya Kishi
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Publication number: 20070020726Abstract: Glutaminase is purified from an Aspergillus oryzae, its partial amino acid sequence is determined, a partial sequence of glutaminase gene is obtained by PCR based on the obtained information, and DNA fragments containing glutaminase gene from Aspergillus oryzae genomic library and cDNA library, and Aspergillus nidulans genomic library by hybridization using the partial sequence as a probe.Type: ApplicationFiled: September 18, 2006Publication date: January 25, 2007Applicant: Ajinomoto Co., Inc.Inventors: Kyoko Koibuchi, Hiroaki Nagasaki, Ari Yuasa, Jiro Kataoka, Katsuhiko Kitamoto
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Publication number: 20070004003Abstract: It is intended to provide koji mold-origin phospholipase A2 and a DNA encoding it. Namely, phospholipase A2 comprising the following protein (a) or (b): (a) a protein having an amino acid sequence represented by SEQ ID NO: 1 or 2; and (b) a protein having an amino acid sequence derived from an amino acid sequence represented by SEQ ID NO: 1 or 2 by a partial modification and serving as phospholipase A2.Type: ApplicationFiled: March 2, 2004Publication date: January 4, 2007Applicants: National Institute of Technology and Evaluation, National Institute of Advanced Industrial Science and Technology, National Research Institute BrewingInventors: Katsuhiko Kitamoto, Manabu Arioka, Shotaro Yamaguchi, Masayuki Machida, Keletsu Abe, Katsuya Gomi, Kiyoshi Asai, Motoaki Sano, Taishin Kin, Hideki Nagasaki, Akira Hosoyama, Osamu Akita, Naotake Ogasawara, Satoru Kuhara
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Patent number: 7157252Abstract: Glutaminase is purified from an Aspergillus oryzae, its partial amino acid sequence is determined, a partial sequence of glutaminase gene is obtained by PCR based on the obtained information, and DNA fragments containing glutaminase gene from Aspergillus oryzae genomic library and cDNA library, and Aspergillus nidulans genomic library by hybridization using the partial sequence as a probe.Type: GrantFiled: May 24, 2004Date of Patent: January 2, 2007Assignee: Ajinomoto Co., Inc.Inventors: Kyoko Koibuchi, Hiroaki Nagasaki, Ari Yuasa, Jiro Kataoka, Katsuhiko Kitamoto
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Patent number: 7087422Abstract: The object of the present invention is to provide Koji mold aminopeptidases capable of efficiently hydrolyzing persistent peptides and also genes encoding the aminopeptidases. The present invention provides Aspergillus nidulans aminopeptidase and nucleic acid molecules encoding it. In particular, the present invention provides a protein having an amino acid sequence represented by amino acid Nos. 1 to 519 in SEQ ID NO: 2, or a protein containing the substitution, deletion, insertion, addition or inversion of one or more amino acids in said sequence, and which protein has an activity of catalyzing the reaction for releasing an amino acid at an N-terminal of a peptide, and nucleic acid molecules encoding them.Type: GrantFiled: September 22, 2003Date of Patent: August 8, 2006Assignee: Ajinomoto Co., Inc.Inventors: Kyoko Koibuchi, Daiki Ninomiya, Mari Kojima, Yoichi Ueda, Jun-ichi Maruyama, Katsuhiko Kitamoto
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Publication number: 20050120394Abstract: The present invention relates to a method of expressing a gene by inserting the genome into a host organism using genetic engineering techniques. The present invention further relates to a novel promoter, a recombinant vector containing the promoter and a target gene, a transformant containing the recombinant vector, and a method of producing a useful gene product or useful substance using the transformant.Type: ApplicationFiled: September 13, 2002Publication date: June 2, 2005Inventors: Satoshi Saitoh, Osamu Saotome, Noriko Yasutani, Yasuo Matsuo, Nobuhiro Ishida, Masana Hirai, Katsuhiko Kitamoto
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Patent number: 6830905Abstract: Glutaminase is purified from an Aspergillus oryzae, its partial amino acid sequence is determined, a partial sequence of glutaminase gene is obtained by PCR based on the obtained information, and DNA fragments containing glutaminase gene from Aspergillus oryzae genomic library and cDNA library, and Aspergillus nidulans genomic library hybridization using the partial sequence as a probe.Type: GrantFiled: October 2, 2002Date of Patent: December 14, 2004Assignee: Ajinomoto Co., Inc.Inventors: Kyoko Koibuchi, Hiroaki Nagasaki, Ari Yuasa, Jiro Kataoka, Katsuhiko Kitamoto
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Publication number: 20040229322Abstract: Glutaminase is purified from an Aspergillus oryzae, its partial amino acid sequence is determined, a partial sequence of glutaminase gene is obtained by PCR based on the obtained information, and DNA fragments containing glutaminase gene from Aspergillus oryzae genomic library and cDNA library, and Aspergillus nidulans genomic library by hybridization using the partial sequence as a probe.Type: ApplicationFiled: May 24, 2004Publication date: November 18, 2004Applicant: Ajinomoto Co., Inc.Inventors: Kyoko Koibuchi, Hiroaki Nagasaki, Ari Yuasa, Jiro Kataoka, Katsuhiko Kitamoto
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Publication number: 20040219636Abstract: The object of the present invention is to provide Koji mold aminopeptidases capable of efficiently hydrolyzing persistent peptides and also genes encoding the aminopeptidases. The present invention provides Aspergillus nidulans aminopeptidase and nucleic acid molecules encoding it. In particular, the present invention provides a protein having an amino acid sequence represented by amino acid Nos. 1 to 519 in SEQ ID NO: 2, or a protein containing the substitution, deletion, insertion, addition or inversion of one or more amino acids in said sequence, and which protein has an activity of catalyzing the reaction for releasing an amino acid at an N-terminal of a peptide, and nucleic acid molecules encoding them.Type: ApplicationFiled: September 22, 2003Publication date: November 4, 2004Applicant: AJINOMOTO CO., INC.Inventors: Kyoko Koibuchi, Daiki Ninomiya, Mari Kojima, Yoichi Ueda, Jun-ichi Maruyama, Katsuhiko Kitamoto
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Publication number: 20030170670Abstract: Glutaminase is purified from an Aspergillus oryzae, its partial amino acid sequence is determined, a partial sequence of glutaminase gene is obtained by PCR based on the obtained information, and DNA fragments containing glutaminase gene from Aspergillus oryzae genomic library and cDNA library, and Aspergillus nidulans genomic library by hybridization using the partial sequence as a probe.Type: ApplicationFiled: October 2, 2002Publication date: September 11, 2003Applicant: AJINOMOTO CO. INC.Inventors: Kyoko Koibuchi, Hiroaki Nagasaki, Ari Yuasa, Jiro Kataoka, Katsuhiko Kitamoto