WO2011083933A2 - L-오르니틴 또는 l-아르기닌 생산 변이주 및 이의 제조방법 - Google Patents
L-오르니틴 또는 l-아르기닌 생산 변이주 및 이의 제조방법 Download PDFInfo
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- WO2011083933A2 WO2011083933A2 PCT/KR2010/009521 KR2010009521W WO2011083933A2 WO 2011083933 A2 WO2011083933 A2 WO 2011083933A2 KR 2010009521 W KR2010009521 W KR 2010009521W WO 2011083933 A2 WO2011083933 A2 WO 2011083933A2
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- arginine
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P13/00—Preparation of nitrogen-containing organic compounds
- C12P13/04—Alpha- or beta- amino acids
- C12P13/10—Citrulline; Arginine; Ornithine
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- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
- C12N9/10—Transferases (2.)
- C12N9/1025—Acyltransferases (2.3)
- C12N9/1029—Acyltransferases (2.3) transferring groups other than amino-acyl groups (2.3.1)
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- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
- C12N9/14—Hydrolases (3)
- C12N9/78—Hydrolases (3) acting on carbon to nitrogen bonds other than peptide bonds (3.5)
- C12N9/80—Hydrolases (3) acting on carbon to nitrogen bonds other than peptide bonds (3.5) acting on amide bonds in linear amides (3.5.1)
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- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Y—ENZYMES
- C12Y203/00—Acyltransferases (2.3)
- C12Y203/01—Acyltransferases (2.3) transferring groups other than amino-acyl groups (2.3.1)
- C12Y203/01001—Amino-acid N-acetyltransferase (2.3.1.1)
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Y—ENZYMES
- C12Y305/00—Hydrolases acting on carbon-nitrogen bonds, other than peptide bonds (3.5)
- C12Y305/01—Hydrolases acting on carbon-nitrogen bonds, other than peptide bonds (3.5) in linear amides (3.5.1)
- C12Y305/01016—Acetylornithine deacetylase (3.5.1.16)
Definitions
- the present invention relates to L-ornithine or L-arginine production mutant strains and a method for preparing the same, and more specifically, to acetylglutamate synthase and acetylornithinase related to ornithine or arginine biosynthesis in Corynebacterium glutamicum.
- L-amino acids are used in human medicine, especially in the pharmaceutical industry, food industry and animal nutrition.
- L-ornithine in L-amino acids is known as a pharmaceutical ingredient that promotes liver function as an intermediate of arginine biosynthesis (Salvatore et al., 1964).
- L-arginine is freely contained in plant seeds and garlic, and is also used as an amino acid-enhancing agent and widely used in medicine and food. It is used in medicine for liver function promoter, brain function enhancer, male infertility drug, synthetic amino acid preparation, etc., and for food, fish jelly additive, health drink additive, and salt substitute for hypertension patients have recently been spotlighted.
- Coryneform bacteria especially corynebacterium glutamicum, can produce amino acids by fermentation of strains. Because of its great importance, the production method has been continuously improved, and for example, there has been a methodological improvement in culture medium composition such as stirring and oxygen introduction or sugar concentration during fermentation.
- strains are obtained that are nutritionally demanding for metabolites that are resistant to, or regulated by, anti-metabolites and produce L-amino acids.
- glutamic acid method of producing (glutamate) producing strain of Brevibacterium (Brevibacterium) or Corynebacterium (Corynebacterium) tin ornithine by using a mutant strain derived from a microorganism of the genus (EP 0 393 708 A3) are reported It became.
- the carbon source there is provided a method of producing L- arginine directly from nitrogen source, glutamic acid (glutamate) producing strain of Brevibacterium (Brevibacterium) or Corynebacterium, a method using a mutant strain derived from the (Corynebacterium) in microorganisms (Japanese Published Unexamined Patent digests 57-163487, 60-83593, 62-265988).
- Recombinant DNA technology is a method that is further used to improve the inherent properties of L-amino acid producing strains of Corynebacterium.
- there is a method using a strain amplified ornithine biosynthetic gene argCJBD in a strain that can not synthesize arginine and proline (Hwang et al., 2008).
- a method using a recombinant strain in which the gene argR that suppresses the expression of arginine biosynthetic operon is used US Patent Application No. 2002 / 0045223A1 has been reported.
- L-arginine can be produced at high yield by overexpressing the argD2 gene (Ncgl2355) or the gene (Ncgl0990), which are presumed to be the genes of acetylornithine amino group transferase related to arginine biosynthesis in Corynebacterium glutamicum strains.
- a method for producing arginine is disclosed (Korean Patent Nos. 10-0830289 and 10-0830290).
- biosynthetic genes need to be strengthened, and in particular, the biosynthetic enzymes, acetylglutamate synthase and acetylornithinase, need to be strengthened.
- the present inventors have identified a gene that performs the function of acetylglutamate synthase. At the same time, it was confirmed that this gene has similar activity to acetylornithase encoded by argJ . In addition, the present invention was completed by confirming that the concentration of ornithine or arginine is improved by enhancing the present gene.
- Another object of the present invention is to provide a strain with improved expression of ornithine or arginine by overexpressing the gene.
- Still another object of the present invention is to provide a method for producing ornithine or arginine at high concentration using the microorganism.
- one aspect of the present invention is to provide a polypeptide having the activity of acetyl glutamate synthase and acetyl ornitinase derived from Corynebacterium glutamicum.
- the gene number Ncgl1469 deposited in the "National Insititute of Health" which is a publicly accessible database for identifying genes encoding acetylglutamate synthase and acetylornithase encodes acetylglutamate synthase and acetylornithase. It was confirmed that. There is no known gene encoding acetylglutamate, and acetylornithase has been reported to be encoded by argJ (Sakayan et al., 1996). However, reports of the Ncgl1469 gene encoding two enzymes were previously unknown. The amino acid sequence is listed in SEQ ID NO: 1, and the nucleotide sequence is listed in SEQ ID NO: 2.
- Another aspect of the invention is to provide a vector comprising a gene encoding acetylglutamate synthase and acetylornithase.
- the vector comprises an acetylglutamate synthase and an acetylornithase gene.
- Plasmids that can be used above include pZ1 (menkel et al), pEkEx1 (Eikmarms et al), pHS2-1 (Sonnen et al), pCG4 (US pat. No. 4,489,190) or pNG2 (Serwold-Davis et al) and pEKO (Eikmanns et al).
- pEKO is used in the present invention.
- the vector comprises an amino acid of SEQ ID NO: 1 or a nucleotide of SEQ ID NO: 2. Specifically, the vector shown in FIG. 1 may be mentioned.
- Another aspect of the invention is to provide a microorganism or transfected cell or recombinant cell enriched in acetylglutamate synthase and acetylornithase.
- the strains used may employ strains that already produce L-ornithine or L-arginine prior to enrichment of acetylglutamate synthase and acetylornithase.
- the transformant can be easily prepared by those skilled in the art according to any transformation method.
- "transformation” refers to a phenomenon in which DNA is introduced into a host so that DNA can be reproduced as a factor of a chromosome or by chromosome integration, thereby causing an artificial genetic change by introducing an external DNA into a cell. Means.
- the Hanahan method the electroporation method, the calcium phosphate precipitation method, the protoplast fusion method, and silicon carbide, were used for the transformation method by using CaCl 2 precipitation method and CaCl 2 method using a reducing material called DMSO (dimethyl sulfoxide).
- DMSO dimethyl sulfoxide
- a transformant was prepared by introducing the recombinant vector pEK-Ptrc :: 1469 into a host microorganism using electroporation, and a strain containing the recombinant vector was isolated using antibiotic resistance.
- the concept of "enhancement rather than intrinsic activity” means that the intracellular activities of the above-mentioned enzymes acetylglutamate synthase and acetylornithase are improved compared to those naturally occurring.
- the method for increasing the activity of the enzyme may be to increase the number of gene copies.
- a method using a vector such as a plasmid or inserting an additional gene into a chromosome may be used. It can also be further enhanced by enhancing regulatory factors that positively affect gene expression. Regulatory elements can thus be enhanced at the level of transcription, particularly for enhanced transcriptional signals.
- translation can also be enhanced, thereby improving the stability of, for example, mRNA.
- a gene encoded by a corresponding enzyme having high activity may be used. Overexpression of the genes of interest can also be reached by changing the medium composition. Another way could be to enhance the promoter or to replace the stronger promoter. What can be used as a strong promoter can be used, for example, the Tac-promoter (Amann et al). Another way to increase the activity of the enzyme is to increase the endogenous activity in the microorganism through mutation. Mutations of this kind can be generated, for example, by traditional methods such as UV rays or mutational mitigation chemicals or by genetic engineering methods such as deletions, insertions and / or nucleotide exchanges. In order to enhance the activity of the enzyme it is possible to combine all the above-mentioned measures possible.
- Coryne or Brevi bacterium can be used among Coryneform bacteria, and specifically suitable starting strains of Corynebacterium glutamicum type are, for example, the following known wild type strains.
- the microorganisms described above can be cultured for the purpose of production of L-ornithine or L-arginine. Cultivation process of the microorganism may be made according to the appropriate medium and culture conditions known in the art. This culture process can be used by those skilled in the art can be easily adjusted according to the strain selected. Examples of the culture method include, but are not limited to, batch culture, cintinuous culture, and fed-batch culture. Such various culture methods are disclosed, for example, in "Biochemical Engineering” (James M. Lee, Prentice-Hall International Editions, pp 138-176, 1991).
- compounds such as ammonium hydroxide, potassium hydroxide, ammonia, phosphoric acid and sulfuric acid can be added to the culture in an appropriate manner to adjust the pH of the culture.
- antifoaming agents such as fatty acid polyglycol esters can be used to suppress bubble generation.
- oxygen or an oxygen-containing gas eg, air
- the temperature of the culture is usually 20 ° C to 45 ° C, preferably 25 ° C to 40 ° C. The incubation period can continue until the desired amount of L-arginine methionine production is obtained, preferably 10 to 160 hours.
- Isolation of L-ornithine or L-arginine from the culture can be separated by conventional methods known in the art.
- methods such as centrifugation, filtration, ion exchange chromatography, and crystallization may be used.
- the supernatant obtained by removing the biomass by centrifugation of the culture at low speed can be separated by ion exchange chromatography.
- the present invention relates to a polynucleotide having activity on acetylglutamate synthase and acetylornithase related to ornithine or arginine biosynthesis in Corynebacterium glutamicum, a polypeptide encoded by the polynucleotide, the polynucleotide Recombinant vector comprising a transformant transformed by introducing the recombinant vector into the L-arginine producing host microorganism and the effect of providing a method for producing L- ornithine or L-arginine by culturing the transformant have.
- the transformant of the present invention is capable of producing L-ornithine or L-arginine in high yield by enhancing the activity of acetylglutamate synthase and acetylornithase than intrinsic activity, and thus have a useful effect in the biopharmaceutical industry. have.
- FIG. 1 is a diagram showing the structure of a pEK-Ptrc :: Ncgl1469 vector according to the present invention.
- PCR was performed using a trc promoter as a template of pTrc99A (Amann et al. 1988) and oligonucleotides of SEQ ID NOs: 3 and 4 as primers to prepare an overexpression vector.
- PCR was performed using rrnB terminator as a template of pTrc99A and oligonucleotides of SEQ ID NO: 5 and 6 as primers.
- the polymerase is PfuUltra TM high-trust DNA polymerase (stratagene) and PCR conditions were denatured 95 ° C., 30 seconds; Annealing 55 ° C., 30 seconds; And 25 degreeC of the polymerization reaction 68 degreeC was repeated 1 time.
- NCgl1469 gene Base sequence information of the NCgl1469 gene was obtained based on NIH GenBank, and primers were synthesized based on this (SEQ ID NOS: 7 and 8). Using the synthesized primers, PCR is performed in the same manner as above using the gene DNA of the Corynebacterium glutamicum ATCC13032 strain as a template. PCR conditions were denatured 95 °C, 30 seconds; Annealing 55 ° C., 30 seconds; And 25 minutes of polymerization reaction at 68 ° C. for 1 minute 30 seconds.
- the pEKO E. coli-C.glutamicum shuttle vector, Eikmanns et al. 1991
- the ptrc promoter fraction and 1469 ORF obtained above were subjected to restriction enzyme treatment with Xba1, NdeI / NedI, and xba1, respectively, and then three-piece conjugation with the enzyme-treated vector to obtain a recombinant vector.
- the obtained recombinant vector was enzymatically treated with HincII and EcoRI again, and the rrnB terminator fraction obtained by PCR was treated with SmaI / EcoRI restriction enzyme to obtain pEK-Ptrc :: 1469 recombinant vector with promoter-1469 ORF-terminator inserted. It was.
- Ncgl1469 cloned in Example 1 In order to confirm the activity of the gene, it is necessary to prepare a strain argJ crushed of Corynebacterium glutamicum ATCC13032 strain first.
- the pK18mobsacB integration vector (Schafer et al. 1994) was used to prepare a strain lacking argJ.
- PCR was performed using ATCC13032 as a template and SEQ ID NOs. 7 and 8, 9 and 10 as primers, respectively. PCR conditions were denatured 95 °C, 30 seconds; Annealing 55 ° C., 30 seconds; And 25 minutes of polymerization reaction at 68 ° C. for 1 minute 30 seconds.
- the recombinant vector was transformed into ATCC13032 strain by electric pulse method, and then, the strain inserted by homology with nucleotides on the chromosome was selected in a selection medium containing 25 mg / L of kanamicin.
- the primary chromosome inserted strains were shaken in nutrient medium (30 ° C., 4 hours), and then plated on solid medium containing sucrose from 10 ⁇ 4 to 10 ⁇ 10 , respectively. By selecting the colonies where most colonies were killed by sucrose and appearing at a low rate, strains from which vector sequences on the chromosomes inserted by secondary crossover were removed were selected.
- the strains selected as described above were finally selected through the gene structure confirmation process through confirmation of susceptibility to the antibiotic kanamycin and PCR using SEQ ID NOS: 7 and 10.
- Example 3 Determination of Acetylglutamate synthase and acetylornithase activity of Ncgl1469
- the cells were collected by centrifugation. The cells were prepared by washing twice in 100 mM Tris / Hcl buffer (pH 7.5), and cell walls were removed by the method using glass beads.
- acetylglutamate activity was measured by measuring the amount of 5-thio-2-nitrobanzonate formed at 412 nm using a spectrophotometer (Errey and Blanchard, 2005). The activity of acetylornithase was also measured by conventional methods (Vogel and Mcleelan, 1970).
- ArgJ-deficient strains reported to encode acetylornithase were prepared to overexpress Ncgl1469, and acetylglutamate and acetylornithase activity were measured to confirm that Ncgl1469 had activity against both enzymes.
- Ncgl1469 gene ornithine strain SJ8074 (argF-argR-proB ⁇ , Hwang et al. 2008) strain was used as a parent strain.
- Recombinant vector pEK-Ptrc Ncgl1469 to C.
- the transformant obtained by introducing into glutamicum SJ8074 strain was named Corynebacterium glutamicum CA06-0020, and was assigned to the Korean Culture Center of Microorganisms (hereinafter abbreviated as "KCCM") as of December 23, 2009. Deposited with KCCM 11057P.
- KCCM Korean Culture Center of Microorganisms
- a strain was prepared by crushing argR, which is an arginine inhibitor, of the ATCC21831 strain, which is an arginine producing strain, and used as a parent strain.
- KCCM 11058P (abbreviated as "KCCM”).
- the present invention relates to a polynucleotide having activity on acetylglutamate synthase and acetylornithase related to ornithine or arginine biosynthesis in Corynebacterium glutamicum, a polypeptide encoded by the polynucleotide, the polynucleotide Recombinant vector comprising a, transformant transformed by introducing the recombinant vector into the L-arginine producing host microorganism and the effect of providing a method for producing L- ornithine or L-arginine by culturing the transformant have.
- the transformant of the present invention is capable of producing L-ornithine or L-arginine in high yield by enhancing the activity of acetylglutamate synthase and acetylornithase than intrinsic activity, and thus have a useful effect in the biopharmaceutical industry. have.
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Abstract
Description
균주 | 플라스미드 | 특이 활성(units/mg protein)* | |
아세틸글루타메이트 신타제 a | 아세틸오르티네이즈b | ||
C. glutamicum argJ | pEK0 | 0.03 | ND |
pEK-Ptrc::1469 | 0.17 | 0.07 |
균주 | 플라스미드 | l-오르니틴 농도 (mg/l)a | |
글루타메이트 (0 mM) | 글루타메이트 (50 mM) | ||
C. glutamicum SJ8074 | pEK0 | 137.57 | 145.27 |
pEK-Ptrc::1469 | 178.81 | 207.84 |
균주 | 플라스미드 | l-아르기닌 농도(mg/l)a | |
IPTG (0 mM) | IPTG (10 mM) | ||
ATCC21831 argRΔ | pEK0 | 1.42 | 1.39 |
pEK-Ptrc::1469 | 1.39 | 1.56 |
Claims (7)
- 코리네박테리움 글루타미컴 유래 아세틸글루타메이트 신타제 및 아세틸오르니티나제의 활성을 갖는 것을 특징으로 하는 아미노산 서열 1로 표시되는 폴리펩티드.
- 제 1항의 폴리펩티드를 암호화하는 서열번호 2로 표시되는 폴리뉴클레오티드.
- 상기 제2항의 뉴클레오티드를 포함하는 도 1의 재조합 벡터 pEK-Ptrc::Ncgl1469.
- 제 3항의 벡터로 형질전환되어 아세틸글루타메이트 신타제 및 아세틸오르니티나제의 활성이 내재적 활성보다 강화된 아미노산 생산능을 가지는 코리네박테리움 속 미생물.
- 제 4항에 있어서, 상기 코리네박테리움 속 미생물이 코리네박테리움 글루타미쿰인 것을 특징으로 하는 코리네박테리움 속 미생물.
- 제 4항에 있어서, 상기 아미노산은 L-오르니틴 또는 L-아르기닌인 것을 특징으로 하는 코리네박테리움 속 미생물.
- 제 4항의 형질전환 된 코리네박테리움 글루타미쿰 속 미생물을 배양하는 단계 및 상기 미생물로부터 오르니틴 또는 아르기닌을 회수하는 단계를 포함하는 L-오르니틴 또는 L-아르기닌의 제조 방법.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
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US13/512,956 US8883460B2 (en) | 2010-01-06 | 2010-12-29 | L-ornithine or L-arginine producing strain and method for producing L-ornithine or L-arginine |
JP2012543031A JP5732469B2 (ja) | 2010-01-06 | 2010-12-29 | L−オルニチンまたはl−アルギニン生産変移株及びこれの製造方法 |
CN201080055961.2A CN102712910B (zh) | 2010-01-06 | 2010-12-29 | 用于生产 l-鸟氨酸或l-精氨酸的突变株以及用于生产其的方法 |
ES10842313.8T ES2672894T3 (es) | 2010-01-06 | 2010-12-29 | Cepa mutante para producir L-ornitina o L-arginina, y procedimiento de producción de la misma |
EP10842313.8A EP2522720B1 (en) | 2010-01-06 | 2010-12-29 | Mutant strain for producing l-ornithine or l-arginine, and method for producing same |
BR112012016535-6A BR112012016535B1 (pt) | 2010-01-06 | 2010-12-29 | Cepa recombinante de corynebacterium sp e método para produzir l-ornitina ou larginina |
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KR10-2010-0000726 | 2010-01-06 | ||
KR1020100000726A KR101174267B1 (ko) | 2010-01-06 | 2010-01-06 | L-오르니틴 또는 l-아르기닌 생산 변이주 및 이의 제조방법 |
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WO2011083933A2 true WO2011083933A2 (ko) | 2011-07-14 |
WO2011083933A3 WO2011083933A3 (ko) | 2011-11-10 |
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PCT/KR2010/009521 WO2011083933A2 (ko) | 2010-01-06 | 2010-12-29 | L-오르니틴 또는 l-아르기닌 생산 변이주 및 이의 제조방법 |
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US (1) | US8883460B2 (ko) |
EP (1) | EP2522720B1 (ko) |
JP (1) | JP5732469B2 (ko) |
KR (1) | KR101174267B1 (ko) |
CN (1) | CN102712910B (ko) |
BR (1) | BR112012016535B1 (ko) |
ES (1) | ES2672894T3 (ko) |
WO (1) | WO2011083933A2 (ko) |
Cited By (2)
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JP2015507479A (ja) * | 2012-01-11 | 2015-03-12 | シージェイ チェイルジェダン コーポレーション | プトレシン生産能が向上した組換え微生物およびそれを用いてプトレシンを生産する方法 |
CN114990039A (zh) * | 2022-06-01 | 2022-09-02 | 南京工业大学 | 一种利用半乳糖原料合成l-鸟氨酸的重组谷氨酸棒杆菌及其应用 |
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KR101481782B1 (ko) * | 2012-12-28 | 2015-01-13 | 대상 주식회사 | Gogat의 불활성화에 의한 아미노산 고생산능 변이 균주 |
KR101735935B1 (ko) * | 2015-07-20 | 2017-05-16 | 씨제이제일제당 (주) | 퓨트레신 또는 오르니틴 생산 미생물 및 이를 이용한 퓨트레신 또는 오르니틴 생산방법 |
KR20230054183A (ko) * | 2021-10-15 | 2023-04-24 | 씨제이제일제당 (주) | L-아르기닌을 생산하는 코리네박테리움 속 미생물 및 이를 이용한 l-아르기닌 생산방법 |
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JPS57163487A (en) | 1981-04-02 | 1982-10-07 | Ajinomoto Co Inc | Production of l-arginine through fermentation process |
JPS6083593A (ja) | 1983-10-12 | 1985-05-11 | Ajinomoto Co Inc | 発酵法によるl−アルギニンの製造法 |
JPS62265988A (ja) | 1986-05-14 | 1987-11-18 | Kyowa Hakko Kogyo Co Ltd | 発酵法によるl−アルギニンの製造法 |
EP0393708A2 (en) | 1989-04-20 | 1990-10-24 | Ajinomoto Co., Inc. | Process for producing L-ornithine by fermentation |
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JP2015507479A (ja) * | 2012-01-11 | 2015-03-12 | シージェイ チェイルジェダン コーポレーション | プトレシン生産能が向上した組換え微生物およびそれを用いてプトレシンを生産する方法 |
EP2803721A4 (en) * | 2012-01-11 | 2015-08-26 | Cj Cheiljedang Corp | RECOMBINANT MICROORGANISM WITH IMPROVED PUTRESCIN PRODUCTION ABILITY AND METHOD FOR PRODUCING PUTRESCIN THEREWITH |
CN114990039A (zh) * | 2022-06-01 | 2022-09-02 | 南京工业大学 | 一种利用半乳糖原料合成l-鸟氨酸的重组谷氨酸棒杆菌及其应用 |
CN114990039B (zh) * | 2022-06-01 | 2023-07-04 | 南京工业大学 | 一种利用半乳糖原料合成l-鸟氨酸的重组谷氨酸棒杆菌及其应用 |
Also Published As
Publication number | Publication date |
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EP2522720A2 (en) | 2012-11-14 |
WO2011083933A3 (ko) | 2011-11-10 |
KR101174267B1 (ko) | 2012-08-14 |
EP2522720A4 (en) | 2013-06-12 |
JP5732469B2 (ja) | 2015-06-10 |
CN102712910A (zh) | 2012-10-03 |
CN102712910B (zh) | 2015-05-27 |
ES2672894T3 (es) | 2018-06-18 |
KR20110080475A (ko) | 2011-07-13 |
EP2522720B1 (en) | 2018-03-28 |
US20130023016A1 (en) | 2013-01-24 |
JP2013512687A (ja) | 2013-04-18 |
BR112012016535A2 (pt) | 2017-03-21 |
US8883460B2 (en) | 2014-11-11 |
BR112012016535B1 (pt) | 2021-10-26 |
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