Patents by Inventor Huiping JIA
Huiping JIA 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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Publication number: 20240294866Abstract: Provided is a method for introducing a point mutation to a BBD29_04920 gene coding sequence in Corynebacterium or improving the expression thereof. The point mutation causes a mutation to the base at position 1560 in the BBD29_04920 gene sequence from cytosine (C) to adenine (A) such that asparagine at position 520 of a coded corresponding amino acid sequence is substituted by lysine. The method can increase fermentation yield of glutamic acid in a strain with the mutation. Also provided are the bacterium generating L-glutamic acid, a nucleic acid and protein comprising the mutation, a recombinant vector and recombinant strain comprising the nucleic acid, and use of these biomaterials in the regulation of the production of L-glutamic acid of a microorganism.Type: ApplicationFiled: December 29, 2021Publication date: September 5, 2024Applicant: INNER MONGOLIA EPPEN BIOTECH CO., LTD.Inventors: Gang MENG, Huiping JIA, Aiying WEI, Chunguang ZHAO, Houbo SU, Lipeng YANG, Fengyong MA, Xiaoqun ZHOU, Xiaowei GUO, Bin TIAN
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Publication number: 20240076701Abstract: Provided are a recombinant strain with modified gene BBD29_14900, and a method for constructing the same and use thereof, with the production of L-glutamic acid as a specific application. Further provided is a method for introducing a point mutation into the BBD29_14900 gene coding sequence in Corynebacterium or improving the expression thereof. The method can cause a bacterial strain with the mutation to increase the fermentation yield of glutamic acid. The point mutation involves a mutation of the base at position 1114 in the sequence of the BBD29_14900 gene from guanine (G) to adenine (A), and thus a substitution of aspartic acid at position 372 in the coded corresponding amino acid sequence with asparagine.Type: ApplicationFiled: December 29, 2022Publication date: March 7, 2024Applicant: NINGXIA EPPEN BIOTECH CO., LTDInventors: Fengyong MA, Aiying WEI, Gang MENG, Chunguang ZHAO, Huiping JIA, Houbo SU, Lipeng YANG, Xiaowei GUO, Bin TIAN, Xiaoqun ZHOU
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Publication number: 20240067998Abstract: Disclosed are strain having enhanced L-glutamic acid production capacity, and method for constructing the same and use thereof. A nucleotide sequence is provided by introducing a point mutation to a wild-type BBD29-00405 gene in Corynebacterium glutamicum so that the base at position 597 of SEQ ID NO: 1 is mutated from guanine (G) into adenine (A). Also provided is a recombinant strain obtained by introducing the polynucleotide sequence into L-glutamic acid-producing Corynebacterium glutamicum, the recombinant strain comprising a BBD29-00405 gene containing a point mutation. Compared with an unmodified strain, the resulting strain facilitates production of L-glutamic acid at a higher concentration.Type: ApplicationFiled: December 29, 2021Publication date: February 29, 2024Applicant: NINGXIA EPPEN BIOTECH CO., LTDInventors: Houbo SU, Aiying WEI, Gang MENG, Lipeng YANG, Fengyong MA, Huiping JIA, Xiaoqun ZHOU, Chunguang ZHAO
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Publication number: 20240067999Abstract: A recombinant strain with modified gene BBD29_11265 and a method for constructing the same are provided. The recombinant strain is a bacterium that generates L-glutamic acid, and has an improved expression of a polynucleotide encoding an amino acid sequence of SEQ ID NO: 3 or a homologous sequence thereof; the improved expression can be having a point mutation in, and an enhanced expression of the polynucleotide encoding an amino acid sequence of SEQ ID NO: 3 or a homologous sequence thereof. A genetically engineered bacterium in which the base at position 70 in the BBD29_112665 gene sequence is mutated to adenine from guanine, causing alanine at position 24 in the coded corresponding amino acid sequence to be substituted with threonine, and an engineered bacterium overexpressing the BBD29_112665 gene or BBD29_11265G70A gene are constructed in the present invention, facilitating an increase in the production and conversion rate of L-glutamic acid.Type: ApplicationFiled: December 28, 2021Publication date: February 29, 2024Applicant: NINGXIA EPPEN BIOTECH CO., LTDInventors: Aiying WEI, Gang MENG, Chunguang ZHAO, Huiping JIA, Houbo SU, Lipeng YANG, Xiaowei GUO, Bin TIAN, Fengyong MA, Xiaoqun ZHOU
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Patent number: 11905540Abstract: A method for producing L-lysine by fermentation, comprising modifying a gene for coding an NCBI reference sequence NP_601029.1 and/or NP_599350.1 on a Corynebacterium bacterial chromosome to enable the activity and/or expression quantity of NP_601029.1 and/or NP_599350.1 to be reduced; replacing a promoter of one or more genes on the Corynebacterium bacterial chromosome with a EP5 promoter, and fermenting bacteria obtained by modification to produce L-lysine. Also provided are methods and applications derived from the method, and bacteria and promoter that can used in the methods and the applications.Type: GrantFiled: December 21, 2021Date of Patent: February 20, 2024Assignee: NINGXIA EPPEN BIOTECH CO., LTDInventors: Gang Meng, Aiying Wei, Fengyong Ma, Huiping Jia, Jiyin Ma
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Publication number: 20230323412Abstract: Taking Corynebacterium glutamicum YP97158 as the starting bacterium, introducing site-directed mutation and/or expression enhancement in the coding region of its NCgl1089 gene, the coding region of NCgl0761 gene, and/or the coding region of ptsS gene, the obtained mutant gene and the recombination comprising said gene has high-efficiency L-amino acids production capacity, which greatly increases the output of L-amino acids, and the strain has good stability, which reduces the production cost as an L-amino acids production strain.Type: ApplicationFiled: January 4, 2021Publication date: October 12, 2023Inventors: Gang MENG, Chunguang ZHAO, Aiying WEI, Xiaoqun ZHOU, Fengyong MA, Lipeng YANG, Houbo SU, Huiping JIA, Bin TIAN, Xiaowei GUO
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RECOMBINANT STRAIN FOR PRODUCING L-AMINO ACID, CONSTRUCTION METHOD THEREFOR, AND APPLICATION THEREOF
Publication number: 20230313122Abstract: A bacterium for producing L-amino acid has improved expression of a polynucleotide encoding a protein represented by SEQ ID NO:3 and improved expression of a polynucleotide encoding a protein represented by SEQ ID NO:31, and/or has mutations in bases at positions ?45 bp and ?47 bp of a promotor region represented by SEQ ID NO:57. A polynucleotide, encodes proteins and can be included in a recombinant vector, which can be included in a recombinant strain. These are useful in a method for producing L-amino acid. The polynucleotide encodes a protein which is represented by SEQ ID NO:3 and has arginine at position 334 substituted by a terminator or encodes a protein which is represented by SEQ ID NO:31 and has tyrosine at position 592 substituted by phenylalanine, or is formed by mutations in bases at positions ?45 bp and ?47 bp of a promotor region represented by SEQ ID NO:57.Type: ApplicationFiled: December 31, 2020Publication date: October 5, 2023Inventors: Aiying WEI, Gang MENG, Xiaoqun ZHOU, Chunguang ZHAO, Fengyong MA, Huiping JIA, Lipeng YANG, Houbo SU, Xiaowei GUO, Bin TIAN, Xiaohang GAO -
Publication number: 20230295645Abstract: Provided are a method for introducing point mutations to the coding sequence of NCg12176 gene or improving the expression thereof in Corynebacterium glutamicum, and a method for performing point mutations on the promoter region sequence of dapB gene in Corynebacterium glutamicum. The fermentation yield of L-lysine produced by a strain with the mutations can be increased by means of the methods.Type: ApplicationFiled: December 30, 2020Publication date: September 21, 2023Inventors: Gang MENG, Aiying WEI, Huiping JIA, Fengyong MA, Xiaoqu ZHOU, Chunguang ZHAO, Xiaowei GUO, Bin TIAN, Xiaohang GAO
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Publication number: 20220324919Abstract: An Escherichia coli-based kdtA-gene-modified recombinant strain, a construction method therefor and use thereof are provided. A mutant gene obtained by subjecting a wild-type kdtA gene (ORF sequence is shown in a sequence 73556-74833 in GenBank accession No. CP032667.1), a wild-type spoT gene (ORF sequence is shown in a sequence 3815907-3818015 in GenBank accession No. AP009048.1) and a wild-type yebN gene (ORF sequence is shown in a sequence 1907402-1907968 in GenBank accession No. AP009048.1) of an E. coli K12 strain and a derivative strain thereof (such as MG1655 and W3110) to site-directed mutagenesis, and a recombinant strain obtained therefrom can be used for the production of L-threonine. Compared with an unmutated wild-type strain, the obtained strain can produce L-threonine with a higher concentration and has good strain stability, and also has lower production cost as an L-threonine production strain.Type: ApplicationFiled: August 27, 2020Publication date: October 13, 2022Inventors: Aiying WEI, Gang MENG, Huiping JIA, Xiaohang GAO, Fengyong MA, Xiaoqun ZHOU, Chunguang ZHAO, Lipeng YANG, Houbo SU
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Publication number: 20220315962Abstract: The present disclosure discloses an Escherichia coli-based genetically-modified recombinant strain, a construction method therefor and use thereof. A mutant gene obtained by subjecting a wild-type deoB gene (ORF sequence is shown in a sequence 3902352-3903575 in GenBank accession No. CP032667.1) and a wild-type rhtA gene promoter sequence PrhtA (shown in a sequence 850520-850871 in GenBank accession No. AP009048.1) of an E. coli K12 strain and a derivative strain thereof (such as MG1655 and W3110) to site-directed mutagenesis, and a recombinant strain obtained therefrom can be used for the production of L-threonine, and compared with an unmutated wild-type strain, the obtained strain can produce L-threonine with a higher concentration and has good strain stability, and also has lower production cost as an L-threonine production strain.Type: ApplicationFiled: August 27, 2020Publication date: October 6, 2022Inventors: Gang MENG, Aiying WEI, Huiping JIA, Chunguang ZHAO, Xiaoqun ZHOU, Fengyong MA, Xiaowei GUO, Bin TIAN, Houbo SU, Lipeng YANG
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Publication number: 20220112529Abstract: A method for producing L-lysine by fermentation, comprising modifying a gene for coding an NCBI reference sequence NP_601029.1 and/or NP_599350.1 on a Corynebacterium bacterial chromosome to enable the activity and/or expression quantity of NP_601029.1 and/or NP_599350.1 to be reduced; replacing a promoter of one or more genes on the Corynebacterium bacterial chromosome with a EP5 promoter, and fermenting bacteria obtained by modification to produce L-lysine. Also provided are methods and applications derived from the method, and bacteria and promoter that can used in the methods and the applications.Type: ApplicationFiled: December 21, 2021Publication date: April 14, 2022Inventors: Gang Meng, Aiying Wei, Fengyong Ma, Huiping Jia, Jiyin Ma
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Patent number: 11242545Abstract: A method for producing L-lysine by fermentation, comprising modifying a gene for coding an NCBI reference sequence NP_601029.1 and/or NP_599350.1 on a Corynebacterium bacterial chromosome to enable the activity and/or expression quantity of NP_601029.1 and/or NP_599350.1 to be reduced; replacing a promoter of one or more genes on the Corynebacterium bacterial chromosome with a EP5 promoter, and fermenting bacteria obtained by modification to produce L-lysine. Also provided are methods and applications derived from the method, and bacteria and promoter that can used in the methods and the applications.Type: GrantFiled: January 9, 2017Date of Patent: February 8, 2022Assignee: NINGXIA EPPEN BIOTECH CO., LTDInventors: Gang Meng, Aiying Wei, Fengyong Ma, Huiping Jia, Jiyin Ma
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Publication number: 20190241918Abstract: A method for producing L-lysine by fermentation, comprising modifying a gene for coding an NCBI reference sequence NP_601029.1 and/or NP_599350.1 on a Corynebacterium bacterial chromosome to enable the activity and/or expression quantity of NP_601029.1 and/or NP_599350.1 to be reduced; replacing a promoter of one or more genes on the Corynebacterium bacterial chromosome with a EP5 promoter, and fermenting bacteria obtained by modification to produce L-lysine. Also provided are methods and applications derived from the method, and bacteria and promoter that can used in the methods and the applications.Type: ApplicationFiled: January 9, 2017Publication date: August 8, 2019Inventors: Gang Meng, Aiying Wei, Fengyong Ma, Huiping Jia, Jiyin Ma
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Patent number: 10151531Abstract: A dividing-wall rotary kiln device comprises a rotary kiln, an exhaust gas residual-heat power generation device, a gas recovery processing device, a cooler, a combustion fan, a feeding system and an exhaust emission system. A refractory brick unit of a kiln body is a hollow structure formed by a refractory inner cylinder and a refractory outer cylinder. A center of the refractory inner cylinder is a kiln chamber. A material channel is between the refractory inner cylinder and the refractory outer cylinder. The feeding system is connected to a feeding device via a raw material preheating compartment or a dividing-wall preheater. The feeding device is provided with a decomposition gas outlet connected to the gas recovery processing device via the raw material preheating compartment or the dividing-wall preheater. The kiln chamber is connected to the exhaust gas residual-heat power generation device via a kiln tail hood.Type: GrantFiled: September 2, 2015Date of Patent: December 11, 2018Assignee: SHIJIAZHUANG XINHUA ENERGY ENVIRONMENTAL TECHNOLOGY CO., LTD.Inventor: Huiping Jia
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Publication number: 20180112916Abstract: A dividing-wall rotary kiln device comprises a rotary kiln, an exhaust gas residual-heat power generation device, a gas recovery processing device, a cooler, a combustion fan, a feeding system and an exhaust emission system. A refractory brick unit of a kiln body is a hollow structure formed by a refractory inner cylinder and a refractory outer cylinder. A center of the refractory inner cylinder is a kiln chamber. A material channel is between the refractory inner cylinder and the refractory outer cylinder. The feeding system is connected to a feeding device via a raw material preheating compartment or a dividing-wall preheater. The feeding device is provided with a decomposition gas outlet connected to the gas recovery processing device via the raw material preheating compartment or the dividing-wall preheater. The kiln chamber is connected to the exhaust gas residual-heat power generation device via a kiln tail hood.Type: ApplicationFiled: September 2, 2015Publication date: April 26, 2018Inventor: Huiping JIA