WO2021150029A1 - Nadp 의존적 글리세르알데하이드-3-포스페이트 디하이드로지나제를 포함하는 미생물을 이용하여 l-아미노산을 생산하는 방법 - Google Patents
Nadp 의존적 글리세르알데하이드-3-포스페이트 디하이드로지나제를 포함하는 미생물을 이용하여 l-아미노산을 생산하는 방법 Download PDFInfo
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- 229910052708 sodium Inorganic materials 0.000 description 1
- IFGCUJZIWBUILZ-UHFFFAOYSA-N sodium 2-[[2-[[hydroxy-(3,4,5-trihydroxy-6-methyloxan-2-yl)oxyphosphoryl]amino]-4-methylpentanoyl]amino]-3-(1H-indol-3-yl)propanoic acid Chemical compound [Na+].C=1NC2=CC=CC=C2C=1CC(C(O)=O)NC(=O)C(CC(C)C)NP(O)(=O)OC1OC(C)C(O)C(O)C1O IFGCUJZIWBUILZ-UHFFFAOYSA-N 0.000 description 1
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- WPLOVIFNBMNBPD-ATHMIXSHSA-N subtilin Chemical compound CC1SCC(NC2=O)C(=O)NC(CC(N)=O)C(=O)NC(C(=O)NC(CCCCN)C(=O)NC(C(C)CC)C(=O)NC(=C)C(=O)NC(CCCCN)C(O)=O)CSC(C)C2NC(=O)C(CC(C)C)NC(=O)C1NC(=O)C(CCC(N)=O)NC(=O)C(CC(C)C)NC(=O)C(NC(=O)C1NC(=O)C(=C/C)/NC(=O)C(CCC(N)=O)NC(=O)C(CC(C)C)NC(=O)C(C)NC(=O)CNC(=O)C(NC(=O)C(NC(=O)C2NC(=O)CNC(=O)C3CCCN3C(=O)C(NC(=O)C3NC(=O)C(CC(C)C)NC(=O)C(=C)NC(=O)C(CCC(O)=O)NC(=O)C(NC(=O)C(CCCCN)NC(=O)C(N)CC=4C5=CC=CC=C5NC=4)CSC3)C(C)SC2)C(C)C)C(C)SC1)CC1=CC=CC=C1 WPLOVIFNBMNBPD-ATHMIXSHSA-N 0.000 description 1
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- QORWJWZARLRLPR-UHFFFAOYSA-H tricalcium bis(phosphate) Chemical compound [Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QORWJWZARLRLPR-UHFFFAOYSA-H 0.000 description 1
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Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/195—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from bacteria
- C07K14/34—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from bacteria from Corynebacterium (G)
-
- C—CHEMISTRY; METALLURGY
- 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
- C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
- C12N1/20—Bacteria; Culture media therefor
-
- C—CHEMISTRY; METALLURGY
- 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
- C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
- C12N1/20—Bacteria; Culture media therefor
- C12N1/205—Bacterial isolates
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- C—CHEMISTRY; METALLURGY
- 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
- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/63—Introduction of foreign genetic material using vectors; Vectors; Use of hosts therefor; Regulation of expression
- C12N15/74—Vectors or expression systems specially adapted for prokaryotic hosts other than E. coli, e.g. Lactobacillus, Micromonospora
- C12N15/77—Vectors or expression systems specially adapted for prokaryotic hosts other than E. coli, e.g. Lactobacillus, Micromonospora for Corynebacterium; for Brevibacterium
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- C—CHEMISTRY; METALLURGY
- 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
- C12N9/0004—Oxidoreductases (1.)
- C12N9/0008—Oxidoreductases (1.) acting on the aldehyde or oxo group of donors (1.2)
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Y—ENZYMES
- C12Y102/00—Oxidoreductases acting on the aldehyde or oxo group of donors (1.2)
- C12Y102/01—Oxidoreductases acting on the aldehyde or oxo group of donors (1.2) with NAD+ or NADP+ as acceptor (1.2.1)
- C12Y102/01009—Glyceraldehyde-3-phosphate dehydrogenase (NADP+) (1.2.1.9)
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Y—ENZYMES
- C12Y102/00—Oxidoreductases acting on the aldehyde or oxo group of donors (1.2)
- C12Y102/01—Oxidoreductases acting on the aldehyde or oxo group of donors (1.2) with NAD+ or NADP+ as acceptor (1.2.1)
- C12Y102/01012—Glyceraldehyde-3-phosphate dehydrogenase (phosphorylating) (1.2.1.12)
-
- C—CHEMISTRY; METALLURGY
- 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
- C12N2800/00—Nucleic acids vectors
- C12N2800/10—Plasmid DNA
- C12N2800/101—Plasmid DNA for bacteria
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12R—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES C12C - C12Q, RELATING TO MICROORGANISMS
- C12R2001/00—Microorganisms ; Processes using microorganisms
- C12R2001/01—Bacteria or Actinomycetales ; using bacteria or Actinomycetales
- C12R2001/15—Corynebacterium
Definitions
- the present application relates to a microorganism of the genus Corynebacterium having an increased ability to produce L-amino acids including NADP-dependent glyceraldehyde-3-phosphate dehydrogenase and production of L-amino acids using the same it's about how
- Corynebacterium genus microorganism ( Corynebacterium sp. ) is a gram-positive microorganism frequently used to industrially produce materials having various uses, such as feed, pharmaceuticals and food, including L- amino acids and various nucleic acids. Recently, diamine, keto-acid, and the like are also produced from microorganisms of the genus Corynebacterium.
- NADPH nicotinamide adenine dinucleotide phosphate
- the oxidized form of NADP+ and the reduced form of NADPH are mutually in vivo electron transport materials and are involved in various synthesis processes.
- NADPH production pathways include 1) the oxidative pentose phosphate pathway and 2) the NADP-dependent isocitrate dehydrogenase (Icd gene) of the TCA pathway.
- Icd gene NADP-dependent isocitrate dehydrogenase
- enzymes that produce NADPH regardless of the central metabolic pathway include transhydrogenase, ferredoxin: NADP+ oxidoredutase ( Spaans et al , 2015, NADPH-generating systems in bacteria and archaea, Front. Microbiol. 6:742).
- the present inventors introduced NADP-dependent glyceraldehyde-3-phosphate dehydrogenase into the microorganism of the genus Corynebacterium through various studies of Corynebacterium.
- the present application was completed by confirming that the production of amino acids and their precursors is increased in microorganisms of the genus Leum.
- One object of the present application is a microorganism of the genus Corynebacterium comprising the amino acid sequence of SEQ ID NO: 1, NADP dependent glyceraldehyde-3-phosphate dehydrogenase (NADP dependent glyceraldehyde-3-phosphate dehydrogenase) culturing in a medium; And recovering the L- amino acid from the cultured microorganism or culture of the present application; comprising, to provide a method for producing L- amino acid.
- Another object of the present application including the amino acid sequence of SEQ ID NO: 1, including NADP-dependent glyceraldehyde-3-phosphate dehydrogenase (NADP dependent glyceraldehyde-3-phosphate dehydrogenase), L- amino acid production capacity is increased It is to provide microorganisms of the genus Corynebacterium.
- Another object of the present application is of a microorganism of the genus Corynebacterium comprising the amino acid sequence of SEQ ID NO: 1, NADP-dependent glyceraldehyde-3-phosphate dehydrogenase (NADP dependent glyceraldehyde-3-phosphate dehydrogenase) To provide a use for the production of L-amino acids.
- the reducing power is increased through gapN activity, and L- of the microorganisms of the genus Corynebacterium sp. Amino acid production capacity can be increased.
- One aspect of the present application for achieving the above object is a coli comprising NADP dependent glyceraldehyde-3-phosphate dehydrogenase, comprising the amino acid sequence of SEQ ID NO: 1 Culturing the microorganisms of the genus Nebacterium in a medium; and recovering L-amino acids from the cultured microorganism or culture; it provides a method for producing L-amino acids, including.
- NADP-dependent glyceraldehyde-3-phosphate dehydrogenase refers to glyceraldehyde-3-phosphate as a substrate and 3-phosphoglyceride using NADP as a coenzyme. It refers to a polypeptide having an activity of converting into a rate (3-phasphateglycerate).
- the NADP-dependent glyceraldehyde-3-phosphate dehydrogenase may include NADP-dependent glyceraldehyde-3-phosphate dehydrogenase derived from animals, plants, and bacteria.
- the NADP-dependent glyceraldehyde-3-phosphate dehydrogenase may be derived from bacteria, and more specifically, may be derived from the genus Lactobacillus sp ., Lactobacillus delburuki subspecies bulgaricus. ( Lactobacillus delbrueckii subsp. Bulgaricus ) It may be derived from.
- the NADP-dependent glyceraldehyde-3-phosphate dehydrogenase may be, for example, a polypeptide comprising the amino acid sequence of SEQ ID NO: 1.
- the polypeptide comprising the amino acid sequence of SEQ ID NO: 1 may be used interchangeably with the polypeptide having the amino acid sequence of SEQ ID NO: 1 and the polypeptide consisting of the amino acid sequence of SEQ ID NO: 1.
- SEQ ID NO: 1 refers to an amino acid sequence having NADP-dependent glyceraldehyde-3-phosphate dehydrogenase activity.
- SEQ ID NO: 1 may be a polypeptide sequence having NADP-dependent glyceraldehyde-3-phosphate dehydrogenase activity encoded by the gapN gene.
- the polypeptide may be derived from Lactobacillus sp ., specifically Lactobacillus delbrueckii subsp. Bulgaricus ) It may be derived from, but not limited to, the amino acid Sequences having the same activity as may be included without limitation.
- the amino acid sequence of SEQ ID NO: 1 can be obtained from a known database, National Institutes of Health (NIH GenBank).
- NIH GenBank National Institutes of Health
- polypeptide having NADP-dependent glyceraldehyde-3-phosphate dehydrogenase activity in the present application is defined as a polypeptide comprising the amino acid sequence of SEQ ID NO: 1, meaningless sequences before and after the amino acid sequence of SEQ ID NO: 1 are added or naturally occurring mutations, or silent mutations thereof.
- the polypeptide having the amino acid sequence of SEQ ID NO: 1 has the same or corresponding activity to each other, it corresponds to the polypeptide having the NADP-dependent glyceraldehyde-3-phosphate dehydrogenase activity of the present application.
- the polypeptide having NADP-dependent glyceraldehyde-3-phosphate dehydrogenase activity of the present application is the amino acid sequence of SEQ ID NO: 1 or 80%, 85%, 90%, 95%, 96%, 97 thereof. It may be a polypeptide consisting of an amino acid sequence having at least %, 98%, or 99% homology or identity.
- polypeptide comprising an amino acid sequence in which some sequence is deleted, modified, substituted or added is also included within the scope of the polypeptide subject to mutation of the present application. is self-evident
- polypeptides consisting of modified, substituted or added amino acid sequences may also be used in the present application.
- a 'polypeptide consisting of the amino acid sequence of SEQ ID NO: 1' may belong to a 'polypeptide consisting of the amino acid sequence of SEQ ID NO: 1' if it has the same or corresponding activity.
- the gene encoding the NADP-dependent glyceraldehyde-3-phosphate dehydrogenase is a gapN gene, and the gene may be derived from bacteria, and more specifically, from Lactobacillus sp. It may be derived from, but is not particularly limited as long as it is a microorganism of the genus Lactobacillus that can express the gapN gene. Specifically, the Lactobacillus genus microorganism may be Lactobacillus delbrueckii subsp. Bulgaricus.
- the gene may be a nucleotide sequence encoding the amino acid sequence of SEQ ID NO: 1, and more specifically, may be a sequence including the nucleotide sequence of SEQ ID NO: 2, but is not limited thereto.
- the polynucleotide including the nucleotide sequence of SEQ ID NO: 2 may be used in combination with the polynucleotide having the nucleotide sequence of SEQ ID NO: 2 and the polynucleotide consisting of the nucleotide sequence of SEQ ID NO: 2.
- polynucleotide refers to a DNA or RNA strand of a certain length or longer as a polymer of nucleotides in which nucleotide monomers are linked in a long chain by covalent bonds, and more specifically, encoding the polypeptide. polynucleotide fragments.
- the polynucleotide of the present application may contain a variety of coding regions within a range that does not change the amino acid sequence of the polypeptide due to codon degeneracy or considering codons preferred in an organism to express the polypeptide. Deformation can be made. Specifically, any polynucleotide sequence encoding NADP-dependent glyceraldehyde-3-phosphate dehydrogenase including the amino acid sequence of SEQ ID NO: 1 may be included without limitation.
- NADP-dependent glyceraldehyde comprising the amino acid sequence of SEQ ID NO: 1 by hydridation under stringent conditions with a probe that can be prepared from a known gene sequence, for example, a sequence complementary to all or part of the nucleotide sequence. Any sequence encoding a polypeptide having -3-phosphate dehydrogenase activity may be included without limitation.
- stringent condition refers to a condition that enables specific hybridization between polynucleotides. These conditions are described in J.
- 40% or more, specifically 90% or more, more specifically 95% or more, more specifically 97% or more, particularly specifically 99% or more homology between genes with high homology or identity, or Genes with the same identity are hybridized and genes with homology or identity lower than that are not hybridized, or washing conditions of normal southern hybridization at 60 ° C., 1 ⁇ SSC, 0.1% SDS, specifically At a salt concentration and temperature equivalent to 60° C., 0.1 ⁇ SSC, 0.1% SDS, more specifically 68° C., 0.1 ⁇ SSC, 0.1% SDS, the conditions of washing once, specifically 2 to 3 times can be listed. there is.
- Hybridization requires that two nucleic acids have complementary sequences, although mismatch between bases is possible depending on the stringency of hybridization.
- complementary is used to describe the relationship between nucleotide bases capable of hybridizing to each other.
- adenosine is complementary to thymine
- cytosine is complementary to guanine.
- the present application may also include isolated nucleic acid fragments that are complementary to substantially similar nucleic acid sequences as well as the entire sequence.
- polynucleotides having homology or identity can be detected using hybridization conditions including a hybridization step at a Tm value of 55°C and using the above-described conditions.
- the Tm value may be 60 °C, 63 °C or 65 °C, but is not limited thereto and may be appropriately adjusted by those skilled in the art according to the purpose.
- the appropriate stringency for hybridizing polynucleotides depends on the length of the polynucleotides and the degree of complementarity, and the parameters are well known in the art (eg, J. Sambrook et al., supra).
- the term 'homology' or 'identity' refers to a degree related to two given amino acid sequences or base sequences and may be expressed as a percentage.
- the terms homology and identity can often be used interchangeably.
- Sequence homology or identity of a conserved polynucleotide or polypeptide is determined by standard alignment algorithms, with default gap penalties established by the program used may be used.
- Substantially, homologous or identical sequences generally have moderate or high stringency conditions along at least about 50%, 60%, 70%, 80% or 90% of the entire or full-length sequence. It can hybridize under stringent conditions. Hybridization is also contemplated for polynucleotides containing degenerate codons instead of codons in the polynucleotides.
- GAP program is defined as the total number of symbols in the shorter of two sequences divided by the number of similarly aligned symbols (ie, nucleotides or amino acids).
- Default parameters for the GAP program are: (1) a binary comparison matrix (containing values of 1 for identity and 0 for non-identity) and Schwartz and Dayhoff, eds., Atlas Of Protein Sequence And Structure, National Biomedical Research Foundation , pp. 353-358 (1979), Gribskov et al (1986) Nucl. Acids Res. 14: weighted comparison matrix of 6745 (or EDNAFULL (EMBOSS version of NCBI NUC4.4) substitution matrix); (2) a penalty of 3.0 for each gap and an additional 0.10 penalty for each symbol in each gap (or a gap opening penalty of 10, a gap extension penalty of 0.5); and (3) no penalty for end gaps.
- the gene encoding the NADP-dependent glyceraldehyde-3-phosphate dehydrogenase is introduced into a microorganism of the genus Corynebacterium by a conventional method known in the art, and NADP-dependent glycerin in the microorganism of the genus Corynebacterium Aldehyde-3-phosphate dehydrogenase may be expressed.
- a polypeptide refers to a state in which a target polypeptide is introduced into a microorganism or modified to be expressed in a microorganism.
- a “polypeptide of interest” may be the aforementioned NADP-dependent glyceraldehyde-3-phosphate dehydrogenase.
- introduction of a polypeptide means that the microorganism exhibits the activity of the target polypeptide that it did not originally have.
- a polynucleotide encoding a target polypeptide may be introduced into a chromosome in a microorganism, or a vector containing a polynucleotide encoding a target polypeptide may be introduced into a microorganism to exhibit its activity. Even if the target polypeptide is already present in the microorganism, by introducing the target polypeptide into the microorganism, the expression or activity of the polypeptide in the microorganism can be increased or enhanced compared to the unmodified microorganism.
- enhancement of activity means that the activity of a specific polypeptide in the microorganism is improved compared to the intrinsic activity, or it means that the activity of the polypeptide in the non-mutated microorganism is improved.
- intrinsic activity refers to the activity of a specific polypeptide originally possessed by the parent strain before the transformation when the trait of a microorganism is changed due to genetic variation caused by natural or artificial factors.
- activity enhancement is a method for introducing a polypeptide into the microorganism, a method for increasing the intracellular copy number of a gene encoding the polypeptide, a method for introducing a mutation into an expression control sequence of a gene encoding the polypeptide, a method for encoding the polypeptide It may consist of any one or more methods selected from the group consisting of a method of replacing a gene expression control sequence with a sequence with strong activity and a method of additionally introducing a mutation into a gene encoding a polypeptide to enhance the activity of the polypeptide, but is not limited thereto. does not
- the method for introducing the polypeptide into the microorganism or the method for increasing the intracellular copy number of the gene encoding the polypeptide is not particularly limited thereto, but is performed by inserting the polynucleotide encoding the polypeptide into a chromosome or plasmid in the microorganism using a vector can be Specifically, a vector capable of replicating and functioning independently of a host to which a polynucleotide encoding a polypeptide of the present application is operably linked may be introduced into a host cell.
- a vector capable of inserting the polynucleotide into a chromosome in the host cell, to which the polynucleotide is operably linked may be introduced into the chromosome of the host cell. Insertion of the polynucleotide into a chromosome may be accomplished by any method known in the art, for example, by homologous recombination.
- modifying the expression control sequence to increase the expression of the polynucleotide is not particularly limited thereto, to further enhance the activity of the expression control sequence, deletion, insertion, non-conservative or conservative substitution of the nucleic acid sequence, or their It can be carried out by inducing a mutation in the sequence in combination, or by replacing it with a nucleic acid sequence having a stronger activity.
- the expression control sequence is not particularly limited thereto, but may include a promoter, an operator sequence, a sequence encoding a ribosome binding site, a sequence for regulating the termination of transcription and translation, and the like.
- a strong promoter may be linked to the upper portion of the polynucleotide expression unit instead of the original promoter, but is not limited thereto.
- Examples of known strong promoters include cj1 to cj7 promoter (Korean Patent No. 10-0620092), lac promoter, trp promoter, trc promoter, tac promoter, lambda phage PR promoter, PL promoter, tet promoter, gapA promoter, SPL7 promoter , SPL13 (sm3) promoter (Korean Patent No. 10-1783170), O2 promoter (Korean Patent No. 10-1632642), tkt promoter and yccA promoter, but are not limited thereto.
- the modification of the polynucleotide sequence on the chromosome is not particularly limited thereto, but a mutation in the expression control sequence by deletion, insertion, non-conservative or conservative substitution of a nucleic acid sequence or a combination thereof to further enhance the activity of the polynucleotide sequence. It can be carried out by inducing and replacing with a polynucleotide sequence improved to have stronger activity.
- Such introduction and enhancement of the polypeptide activity may be, but is not limited to, the activity or concentration of the corresponding polypeptide being increased compared to the activity or concentration of the polypeptide in a wild-type or unmodified microbial strain.
- the introduction or enhancement of the activity of the NADP-dependent glyceraldehyde-3-phosphate dehydrogenase is to prepare a recombinant vector for expression containing the gene encoding it, and introduce the vector into a microorganism of the genus Corynebacterium.
- This can be achieved by producing a transformed microorganism of the genus Corynebacterium. That is, the microorganism containing the gene encoding the NADP-dependent glyceraldehyde-3-phosphate dehydrogenase may be a recombinant microorganism produced by transformation with a vector containing the gene, but is not limited thereto.
- the term "vector” refers to a DNA preparation containing a suitable regulatory sequence and a nucleotide sequence of the target polypeptide so that the target polypeptide can be expressed in a suitable host.
- regulatory sequences may include a promoter capable of initiating transcription, an optional operator sequence for regulating such transcription, a sequence encoding a suitable mRNA ribosome binding site, and a sequence regulating the termination of transcription and translation.
- the vector After transformation into a suitable host cell, the vector can replicate or function independently of the host genome, and can be integrated into the genome itself.
- the vector used in the present application is not particularly limited as long as it is capable of replication in a host cell, and any vector known in the art may be used.
- Examples of commonly used vectors include plasmids, cosmids, viruses and bacteriophages in a natural or recombinant state.
- phage vectors or cosmid vectors pWE15, M13, ⁇ EMBL3, ⁇ EMBL4, ⁇ FIXII, ⁇ DASHII, ⁇ ZAPII, ⁇ gt10, ⁇ gt11, MBL3, MBL4, IXII, ASHII, APII, t10, t11, Charon4A, and Charon21A, etc. will be used.
- plasmid vector pBR-based, pUC-based, pBluescriptII-based, pGEM-based, pTZ-based, pET-based, pMal-based, pQE-based, pCL-based and the like can be used.
- pDZ, pACYC177, pACYC184, pCL, pECCG117, pUC19, pBR322, pMW118, pCC1BAC vectors and the like can be used.
- the recombinant vector for the expression of the NADP-dependent glyceraldehyde-3-phosphate dehydrogenase is a conventional method, that is, the gene sequence of the NADP-dependent glyceraldehyde-3-phosphate dehydrogenase is obtained by using a restriction enzyme in an appropriate vector. It may be prepared by ligation.
- a polynucleotide encoding a target polypeptide can be inserted into the chromosome through the recombinant vector for expression of the polypeptide.
- the insertion of the polynucleotide into the chromosome may be performed by any method known in the art, for example, homologous recombination, but is not limited thereto. It may further include a selection marker (selection marker) for confirming whether the chromosome is inserted.
- the selection marker is used to select cells transformed with a vector, that is, to determine whether a target nucleic acid molecule is inserted, and to confer a selectable phenotype such as drug resistance, auxotrophicity, resistance to cytotoxic agents, or expression of a surface polypeptide. markers may be used. In an environment treated with a selective agent, only the cells expressing the selectable marker survive or exhibit other expression traits, so that the transformed cells can be selected.
- the term "transformation” refers to introducing a vector including a polynucleotide encoding a target polypeptide into a host cell so that the polypeptide encoded by the polynucleotide can be expressed in the host cell.
- the transformed polynucleotide may include all of them regardless of whether they are inserted into the chromosome of the host cell or located outside the chromosome, as long as they can be expressed in the host cell.
- the polynucleotide includes DNA and RNA encoding the target polypeptide. The polynucleotide may be introduced into a host cell and expressed in any form, as long as it can be expressed.
- the polynucleotide may be introduced into a host cell in the form of an expression cassette, which is a gene construct including all elements necessary for self-expression.
- the expression cassette may include a promoter operably linked to the polynucleotide, a transcription termination signal, a ribosome binding site, and a translation termination signal.
- the expression cassette may be in the form of an expression vector capable of self-replication.
- the polynucleotide may be introduced into a host cell in its own form and operably linked to a sequence required for expression in the host cell, but is not limited thereto.
- operably linked means that a promoter sequence that initiates and mediates transcription of a polynucleotide encoding a target polypeptide of the present application and the gene sequence are functionally linked.
- the method for transforming the vector of the present application includes any method of introducing a nucleic acid into a cell, and may be performed by selecting a suitable standard technique as known in the art depending on the host cell. For example, electroporation, calcium phosphate (CaPO 4 ) precipitation, calcium chloride (CaCl 2 ) precipitation, microinjection, polyethylene glycol (PEG) method, DEAE-dextran method, cationic liposome method, and Lithium acetate-DMSO method and the like, but is not limited thereto.
- a microorganism producing L-amino acids or "a microorganism of the genus Corynebacterium that produces L-amino acids” includes all microorganisms of the genus Corynebacterium or microorganisms in which genetic modification has occurred naturally or artificially It is a microorganism whose specific mechanism is weakened or strengthened due to causes such as insertion of an external gene or intensification or inactivation of the activity of an intrinsic gene, in which genetic mutation or activity is enhanced for the production of the desired L-amino acid. It may be a microorganism of the genus Corynebacterium.
- the activity of a portion of the polypeptide in the biosynthetic pathway of the desired L-amino acid is enhanced, or the activity of a portion of the polypeptide in the desired L-amino acid degradation pathway is weakened, so the desired L-amino acid It may be a microorganism with enhanced production ability.
- the microorganism is, aspartate kinase (lysC), homoserine dehydrogenase (homoserine dehydrogenase, hom), L- threonine dehydratase (L-threonine dehydratase, ilvA), 2- Enhanced activity of 2-isopropylmalate synthase (leuA), acetolactate synthase (ilvN), or/and homoserine O-acetyltransferase (metX) It may be a microorganism. Also, for example, the microorganism may include a gene or polypeptide whose activity is enhanced by being modified to have feedback inhibition resistance.
- the microorganism may have weakened or inactivated activities of various genes or polypeptides that degrade desired L-amino acids.
- the microorganism may be a microorganism having an increased ability to produce L-amino acids by random mutation, but is not limited thereto. That is, the microorganism may be a microorganism in which the production of the desired L-amino acid is increased by enhancing the polypeptide activity of the desired L-amino acid biosynthetic pathway or inactivating / weakening the polypeptide activity of the degradation pathway.
- Enhancing the activity of a polypeptide as described above may include increasing the intracellular copy number of a gene encoding the polypeptide; introducing a mutation into a chromosomal gene encoding a polypeptide and/or an expression control sequence thereof; replacing a gene expression control sequence on a chromosome encoding a polypeptide with a highly active sequence; introducing a mutation into a portion of a gene on a chromosome encoding a polypeptide to increase expression of the polypeptide or to resist feedback inhibition; Or it may be made by a method combining them, but is not limited thereto.
- weakened/inactivated polypeptide activity means that the expression of an enzyme or polypeptide is not expressed at all compared to a native wild-type strain, a parent strain, or a strain in which the polypeptide is unmodified, or has no activity even if it is expressed. means reduced.
- the decrease is when the activity of the polypeptide is decreased compared to the activity of the polypeptide possessed by the original microorganism due to mutation of the gene encoding the polypeptide, modification of the expression control sequence, deletion of part or all of the gene, and the gene encoding it
- the overall degree of activity of the polypeptide in the cell is lower than that of the native strain or the strain before transformation due to inhibition of expression or translation inhibition, it is a concept including a combination thereof as well.
- the inactivation may be achieved by applying various methods well known in the art.
- Examples of the method include a method of deleting all or part of the gene encoding the polypeptide; modification of expression control sequences to reduce expression of said gene encoding said polypeptide; modification of the gene sequence encoding the polypeptide such that the activity of the polypeptide is eliminated or attenuated; introduction of an antisense oligonucleotide (eg, antisense RNA) that complementarily binds to the transcript of the gene encoding the polypeptide; a method of making the attachment of ribosomes impossible by adding a sequence complementary to the Shine-Dalgarno sequence to the front end of the Shine-Dalgarno sequence of the gene encoding the polypeptide to form a secondary structure; There is a method of adding a promoter transcribed in the opposite direction to the 3' end of the open reading frame (ORF) of the polynucleotide sequence of the gene encoding the polypeptide (Reverse transcription engineering, RTE), and a combination thereof is also achieved.
- the above-described method is an example, and methods for enhancing or inactivating polypeptide activity and genetic manipulation methods are known in the art, and the L-amino acid producing microorganism can be prepared by applying various known methods.
- a microorganism of the genus Corynebacterium that produces the L-amino acid including the NADP-dependent glyceraldehyde-3-phosphate dehydrogenase converts the desired L-amino acid from a carbon source in the medium into an unmodified wild-type It can be produced in excess compared to the strain or unmodified mutant, as described above.
- the "microorganism of the genus Corynebacterium that produces L-amino acids” is "Corynebacterium sp. strain having L-amino acid producing ability" or "L-amino acid producing Corynebacterium sp. strain”. can be used
- the NADP-dependent glyceraldehyde-3-phosphate dehydrogenase activity is modified to express a polypeptide, and a microorganism of the genus Corynebacterium that produces L-amino acids is a genus of Corynebacterium capable of producing L-amino acids. If it is a microorganism, it is not specifically limited.
- Corynebacterium genus ( Corynebacterium sp .) microorganisms are Corynebacterium glutamicum ( Corynebacterium glutamicum ), Corynebacterium ammoniagenes ( Corynebacterium ammoniagenes ), Corynebacterium crudilactis ( Corynebacterium crudilactis ) ), Corynebacterium deserti ( Corynebacterium deserti ), Corynebacterium efficiens ), Corynebacterium callunae ( Corynebacterium callunae ), Corynebacterium stationis ( Corynebacterium stationis ), Cory Nebacterium singulare ( Corynebacterium singulare ), Corynebacterium halotolerans ( Corynebacterium halotolerans ), Corynebacterium striatum ( Corynebacterium striatum ), Corynebacterium pollutisoli
- the microorganism of the genus Corynebacterium that produces the L-amino acid may be a recombinant microorganism.
- the recombinant microorganism is as described above.
- the term "cultivation” means growing the microorganism in an appropriately controlled environmental condition.
- the culturing process of the present application may be made according to a suitable medium and culture conditions known in the art. Such a culture process can be easily adjusted and used by those skilled in the art according to the selected strain.
- the culture may be batch, continuous, and fed-batch, but is not limited thereto.
- the term "medium” refers to a material in which nutrients required for culturing the microorganism are mixed as a main component, and supplies nutrients and growth factors, including water, which are essential for survival and growth.
- any medium and other culture conditions used for culturing the microorganism of the present application may be used without any particular limitation as long as it is a medium used for culturing conventional microorganisms, but a suitable carbon source, nitrogen source, personnel, inorganic It can be cultured while controlling temperature, pH, etc. under aerobic conditions in a conventional medium containing compounds, amino acids and/or vitamins.
- the culture medium for the Corynebacterium sp. strain can be found in the literature ["Manual of Methods for General Bacteriology” by the American Society for Bacteriology (Washington D.C., USA, 1981)].
- carbon source in the present application, carbohydrates such as glucose, saccharose, lactose, fructose, sucrose, maltose; sugar alcohols such as mannitol and sorbitol; organic acids such as pyruvic acid, lactic acid, citric acid and the like; Amino acids such as glutamic acid, methionine, lysine, and the like may be included.
- natural organic nutrient sources such as starch hydrolyzate, molasses, blackstrap molasses, rice winter, cassava, sugar cane offal and corn steep liquor can be used, specifically glucose and sterilized pre-treated molasses (i.e., converted to reducing sugar). molasses) may be used, and other appropriate amounts of carbon sources may be variously used without limitation. These carbon sources may be used alone or in combination of two or more, but is not limited thereto.
- nitrogen source examples include inorganic nitrogen sources such as ammonia, ammonium sulfate, ammonium chloride, ammonium acetate, ammonium phosphate, anmonium carbonate, and ammonium nitrate; Amino acids such as glutamic acid, methionine, glutamine, and organic nitrogen sources such as peptone, NZ-amine, meat extract, yeast extract, malt extract, corn steep liquor, casein hydrolyzate, fish or degradation products thereof, defatted soybean cake or degradation products thereof, etc. can be used These nitrogen sources may be used alone or in combination of two or more, but is not limited thereto.
- inorganic nitrogen sources such as ammonia, ammonium sulfate, ammonium chloride, ammonium acetate, ammonium phosphate, anmonium carbonate, and ammonium nitrate
- Amino acids such as glutamic acid, methionine, glutamine
- organic nitrogen sources such as peptone, NZ-amine, meat extract, yeast extract
- the phosphorus may include potassium first potassium phosphate, second potassium phosphate, or a sodium-containing salt corresponding thereto.
- potassium first potassium phosphate potassium phosphate
- second potassium phosphate or a sodium-containing salt corresponding thereto.
- sodium chloride, calcium chloride, iron chloride, magnesium sulfate, iron sulfate, manganese sulfate, calcium carbonate, etc. may be used, and in addition, amino acids, vitamins and/or appropriate precursors may be included. These components or precursors may be added to the medium either batchwise or continuously. However, the present invention is not limited thereto.
- a compound such as ammonium hydroxide, potassium hydroxide, ammonia, phosphoric acid, sulfuric acid and the like may be added to the medium in an appropriate manner to adjust the pH of the medium during culturing of the microorganism.
- an antifoaming agent such as fatty acid polyglycol ester may be used to suppress bubble formation.
- oxygen or oxygen-containing gas may be injected into the medium, or nitrogen, hydrogen or carbon dioxide gas may be injected without injection of gas or without injection of gas to maintain anaerobic and microaerobic conditions, which are limited thereto. it is not
- the temperature of the medium may be 20 °C to 45 °C, specifically 25 °C to 40 °C, but is not limited thereto.
- the incubation period may be continued until a desired production amount of the useful substance is obtained, and specifically, it may be 10 hours to 160 hours, but is not limited thereto.
- the L-amino acid produced by the culture may be discharged into the medium or may remain in the cell without being discharged.
- the method for recovering the L-amino acid produced in the culturing step of the present application may be to collect the desired L-amino acid from the culture medium using a suitable method known in the art according to the culture method. For example, centrifugation, filtration, anion exchange chromatography, crystallization and HPLC may be used, and the desired L-amino acid may be recovered from the medium or microorganism using a suitable method known in the art.
- the recovery step may include a purification process, and may be performed using a suitable method known in the art. Therefore, the recovered L-amino acid may be in a purified form or a microbial fermentation broth containing L-amino acid (Introduction to Biotechnology and Genetic Engineering, A. J. Nair., 2008).
- the L-amino acid produced by the L-amino acid production method according to the present application is not limited in its type. That is, all L-amino acids that can be produced from microorganisms of the genus Corynebacterium may be included without limitation, and intermediates of L-amino acids may also be included.
- the L-amino acids include, for example, L-arginine, L-histidine, L-lysine, L-aspartic acid, L-glutamic acid, L-serine, L-threonine, L-asparagine, L-glutamine, L- Tyrosine, L-alanine, L-isoleucine, L-leucine, L-valine, L-phenylalanine, L-methionine, L-tryptophan, L-glycine, L-proline, L-cysteine, etc., specifically L- It may be lysine, L-threonine, L-isoleucine, L-leucine, L-valine, L-arginine, or L-glutamic acid, but is not limited thereto, and the L-amino acid intermediate is, for example, O - May be acetyl homoserine, but is not limited thereto.
- L- amino acid production ability including NADP dependent glyceraldehyde-3-phosphate dehydrogenase (NADP dependent glyceraldehyde-3-phosphate dehydrogenase) comprising the amino acid sequence of SEQ ID NO: 1 It is to provide an increased microorganisms of the genus Corynebacterium.
- NADP-dependent glyceraldehyde-3-phosphate dehydrogenase a gene encoding it, its expression, and a microorganism of the genus Corynebacterium are as described above.
- a microorganism of the genus Corynebacterium containing a gene encoding a NADP-dependent glyceraldehyde-3-phosphate dehydrogenase is expressed in an unmodified microorganism by NADP-dependent glyceraldehyde-3-phosphate dehydrogenase.
- L-amino acid production capacity may be increased or improved.
- the microorganism of the genus Corynebacterium of the present application is a microorganism capable of producing L-amino acids, and may include not only wild-type microorganisms, but also microorganisms genetically modified to improve L-amino acid production ability.
- the microorganisms that produce L-amino acids are the same as described above.
- the microorganism of the present application is a recombinant microorganism containing NADP-dependent glyceraldehyde-3-phosphate dehydrogenase derived from the genus Lactobacillus, and does not include the NADP-dependent glyceraldehyde-3-phosphate dehydrogenase.
- the desired L-amino acid can be produced in excess from the carbon source in the medium.
- the increased ability to produce L-amino acids of the recombinant microorganism may be obtained with increased reducing power by activation of the NADP-dependent glyceraldehyde-3-phosphate dehydrogenase.
- the NADP-dependent glyceraldehyde-3-phosphate dehydrogenase into a microorganism of the genus Corynebacterium that produces L-amino acids, the NADP-dependent glyceraldehyde- By activating 3-phosphate dehydrogenase, it can be used as a reducing power, an energy source, in the biosynthesis of L-amino acids by increasing the amount of NADPH.
- the term "unmodified microorganism” refers to a native strain itself, a microorganism that does not contain the NADP-dependent glyceraldehyde-3-phosphate dehydrogenase, or the NADP-dependent glyceraldehyde-3-phosphate dehydrogenase. It may refer to a microorganism that has not been transformed with a vector containing a polynucleotide encoding an agent, but is not limited thereto.
- the L-amino acid is the same as described above.
- the microorganism of the genus Corynebacterium in which the L-amino acid production ability is increased by introducing a gene encoding NADP-dependent glyceraldehyde-3-phosphate dehydrogenase according to the present application is accession number KCCM 12580P, accession number KCCM 12581P, accession number KCCM 12582P, accession number KCCM 12583P, accession number KCCM 12584P, accession number KCCM 12585P, accession number KCCM 12586P or accession number KCCM 12587P It may be any one selected from the group consisting of microorganisms of the genus Corynebacterium deposited.
- Corynebacterium genus comprising the amino acid sequence of SEQ ID NO: 1, NADP-dependent glyceraldehyde-3-phosphate dehydrogenase (NADP dependent glyceraldehyde-3-phosphate dehydrogenase)
- NADP-dependent glyceraldehyde-3-phosphate dehydrogenase NADP dependent glyceraldehyde-3-phosphate dehydrogenase
- NADP-dependent glyceraldehyde-3-phosphate dehydrogenase a gene encoding the same, its expression, a microorganism.
- Microorganisms of the genus Corynebacterium including the amino acid sequence of SEQ ID NO: 1, NADP-dependent glyceraldehyde-3-phosphate dehydrogenase, microorganisms of the genus Corynebacterium, and L-amino acids as described above.
- Example 1-1 Vector construction for introducing NADP-dependent glyceraldehyde-3-phosphate dehydrogenase (gapN(L)) derived from Lactobacillus delburuki subspecies bulgaricus ATCC 11842 into a transposon in the chromosome of a microorganism of the genus Corynebacterium
- gapN(L) NADP-dependent glyceraldehyde-3-phosphate dehydrogenase
- Bulgaricus NADP-dependent glyceraldehyde-3-phosphate dehydrogenase derived from Bulgaricus was selected. Thereafter, the following experiment was performed to improve the activity.
- amino acid sequence (SEQ ID NO: 1) and the nucleotide sequence (SEQ ID NO: 2) of the Ldb1179 gene encoding gapN derived from Lactobacillus delburuki subspecies bulgaricus ATCC 11842 were obtained from the National Institutes of Health (NIH GenBank).
- Ldb1179 gene For the Ldb1179 gene, a gene fragment of about 1.43 kb was amplified in a form in which the initiation codon TTG was changed to ATG using the SEQ ID NO: 3 and 4 primers using the chromosome of the Lactobacillus delburuki subspecies bulgaricus ATCC 11842 strain as a template (Table 1) . At this time, the PCR reaction was repeated 30 times of denaturation at 95° C. for 30 seconds, annealing at 55° C. for 30 seconds, and elongation at 72° C. for 1 minute and 30 seconds. The PCR product was purified by electrophoresis on a 0.8% agarose gel by eluting an approximately 1.4 kb band.
- the cj7 promoter region was subjected to PCR under the same conditions using the primer pair of SEQ ID NOs: 5 and 6 to obtain a PCR product.
- the PCR reaction was repeated 30 times of denaturation at 95° C. for 30 seconds, annealing at 55° C. for 30 seconds, and elongation at 72° C. for 30 seconds.
- the PCR product obtained above was fusion cloned.
- An In-Fusion® HD cloning kit (Clontech) was used for fusion cloning.
- the resulting plasmid was named pDZ2457::P(cj7)-gapN(L).
- the vector was used to introduce gapN into a lysine, leucine or acetyl homoserine-producing strain.
- the Ldb1179 gene was amplified with a gene fragment of about 1.43 kb in a form in which the initiation codon TTG was changed to ATG using SEQ ID NOs: 3 and 7 primers using the chromosome of Lactobacillus delburuki subspecies bulgaricus ATCC 11842 strain as a template (Table 1) .
- the PCR reaction was repeated 30 times of denaturation at 95° C. for 30 seconds, annealing at 55° C. for 30 seconds, and elongation at 72° C. for 1 minute and 30 seconds.
- the PCR product was purified by electrophoresis on a 0.8% agarose gel by eluting an approximately 1.4 kb band.
- the cj7 promoter region was subjected to PCR under the same conditions using the primer pair of SEQ ID NOs: 8 and 6 to obtain a PCR product.
- the PCR reaction was repeated 30 times of denaturation at 95° C. for 30 seconds, annealing at 55° C. for 30 seconds, and elongation at 72° C. for 30 seconds.
- the PCR product obtained above was fusion cloned.
- An In-Fusion® HD cloning kit (Clontech) was used for fusion cloning.
- the resulting plasmid was named pDZ1108::P(cj7)-gapN(L).
- the vector was used to introduce gapN into isoleucine or threonine-producing strains.
- the Ldb1179 gene was amplified with a gene fragment of about 1.43 kb in a form in which the start codon TTG was changed to ATG using SEQ ID NOs: 3 and 10 primers using the chromosome of Lactobacillus delburuki subspecies bulgaricus ATCC 11842 strain as a template (Table 1) .
- the PCR reaction was repeated 30 times of denaturation at 95° C. for 30 seconds, annealing at 55° C. for 30 seconds, and elongation at 72° C. for 1 minute and 30 seconds.
- the PCR product was purified by electrophoresis on a 0.8% agarose gel by eluting an approximately 1.4 kb band.
- the cj7 promoter region was subjected to PCR under the same conditions using the primer pair of SEQ ID NOs: 9 and 6 to obtain a PCR product.
- the PCR reaction was repeated 30 times of denaturation at 95° C. for 30 seconds, annealing at 55° C. for 30 seconds, and elongation at 72° C. for 30 seconds.
- the PCR product obtained above was fusion cloned.
- An In-Fusion® HD cloning kit (Clontech) was used for fusion cloning.
- the resulting plasmid was named pDZTn5::P(cj7)-gapN(L).
- the vector was used to introduce gapN into a valine or arginine-producing strain.
- Ldb1179 gene For the Ldb1179 gene, a gene fragment of about 1.43 kb was amplified in a form in which the start codon TTG was changed to ATG using SEQ ID NO: 3 and 12 primers using the chromosome of the Lactobacillus delburuki subspecies bulgaricus ATCC 11842 strain as a template (Table 1) . At this time, the PCR reaction was repeated 30 times of denaturation at 95° C. for 30 seconds, annealing at 55° C. for 30 seconds, and elongation at 72° C. for 1 minute and 30 seconds. The PCR product was purified by electrophoresis on a 0.8% agarose gel by eluting an approximately 1.4 kb band.
- the cj7 promoter region was subjected to PCR under the same conditions using the primer pair of SEQ ID NOs: 11 and 6 to obtain a PCR product.
- the PCR reaction was repeated 30 times of denaturation at 95° C. for 30 seconds, annealing at 55° C. for 30 seconds, and elongation at 72° C. for 30 seconds.
- the PCR product obtained above was fusion cloned.
- An In-Fusion® HD cloning kit (Clontech) was used for fusion cloning.
- the resulting plasmid was named pDZ0286::P(cj7)-gapN(L).
- the vector was used to introduce gapN into a glutamic acid-producing strain.
- Example 1-2 Streptococcus mutant ( Streptococcus mutans ) Vector construction for introducing NADP-dependent glyceraldehyde-3-phosphate dehydrogenase (gapN(S)) derived from ATCC 25175 into a transposon in the chromosome of a microorganism of the genus Corynebacterium
- the amino acid sequence (SEQ ID NO: 13) and base sequence (SEQ ID NO: 14) of the SMUFR_0590 gene encoding gapN derived from the Streptococcus mutant ATCC 25175 was obtained from the National Institutes of Health (NIH GenBank), and by the CJ7 promoter in the transposon gene. A vector was prepared for introducing the expressed SMUFR_0590.
- Example 1-1 the vector pDZ for transformation was used, and cj7 was used as the promoter.
- the SMUFR_0590 gene derived from the Streptococcus mutant ATCC 25175 was amplified with a gene fragment of about 1.7 kb using SEQ ID NOs: 15 and 16 primers using pECCG122-Pcj7-gapN (Korean Patent No. 10-1182033) as a template (Table 2) .
- the PCR reaction was repeated 30 times of denaturation at 95° C. for 30 seconds, annealing at 55° C. for 30 seconds, and elongation at 72° C. for 2 minutes.
- the PCR product was electrophoresed on a 0.8% agarose gel and purified by eluting a band of a desired size.
- the PCR product obtained above was fusion cloned.
- An In-Fusion® HD cloning kit (Clontech) was used for fusion cloning.
- the resulting plasmid was named pDZTn::P(cj7)-gapN(S).
- Examples 1-3 Clostridium acetobutylicum Vector construction for introducing NADP-dependent glyceraldehyde-3-phosphate dehydrogenase (gapN(C)) derived from Corynebacterium into a transposon in the chromosome of a microorganism of the genus Corynebacterium
- gapN(C) NADP-dependent glyceraldehyde-3-phosphate dehydrogenase
- amino acid sequence (SEQ ID NO: 35) and base sequence (SEQ ID NO: 36) of the gapN gene of NCBI GenBank WP_010966919.1 and NCBI GenBank NC_015687.1 derived from Clostridium acetobutylicum were obtained from NCBI GenBank, and CJ7 in the transposon gene
- a vector for introducing gapN of NCBI GenBank WP_010966919.1 expressed by a promoter was constructed.
- Example 1-1 the vector pDZ for transformation was used, and cj7 was used as the promoter.
- the gapN gene of NCBI GenBank WP_010966919.1 derived from Clostridium acetobutylicum was amplified by using the Clostridium acetobutylicum gDNA as a template and primers SEQ ID NOs: 37 and 38 to amplify a gene fragment of about 1.5 kb.
- pECCG122-Pcj7-gapN Korean Patent Registration No.
- Example 2-1 Production and evaluation of strains introduced with gapN(L), gapN(S) or gapN(C) in L-lysine-producing strain KCCM11016P
- the selected strains were named KCCM11016P::P(cj7)-gapN(L), KCCM11016P::P(cj7)-gapN(S), and KCCM11016P:::P(cj7)-gapN(C), respectively.
- the prepared strains were cultured in the following way to compare the lysine production capacity. Each strain was inoculated in a 250 ml corner-baffle flask containing 25 ml of the seed medium, and incubated at 30° C. for 20 hours with shaking at 200 rpm. Then, a 250 ml corner-baffle flask containing 24 ml of the production medium was inoculated with 1 ml of the seed culture and cultured with shaking at 30° C. for 72 hours at 200 rpm.
- the composition of the species medium and the production medium is as follows, respectively.
- L-lysine concentration and concentration increase rate in the culture medium for each strain tested are shown in Table 4 below.
- the concentration of L-lysine increased by about 16% in KCCM11016P::P(cj7)-gapN(S) introduced with the gapN gene compared to the L-lysine-producing strain KCCM11016P, KCCM11016P:::P ( It was confirmed that the concentration of L-lysine increased by about 20% in cj7)-gapN(L), and the concentration of L-lysine increased by about 9% in KCCM11016P:::P(cj7)-gapN(C).
- KCCM11016P::P(cj7)-gapN(L) was named CA01-7528 and deposited with the Korea Microorganism Conservation Center, a trustee institution under the Budapest Treaty on September 2, 2019, and was given an accession number KCCM12585P.
- Example 2-2 Production and evaluation of strains introduced with gapN(L), gapN(S), or gapN(C) in L-lysine-producing strain KCCM11347P
- the prepared strain was cultured in the same manner as in Example 2-1, and after completion of the culture, the production ability of L-lysine was measured by HPLC.
- the L-lysine concentration and the concentration increase rate in the culture medium for each strain tested are shown in Table 5 below.
- Example 1-1-1 the plasmid prepared in Example 1-1-1, the plasmid prepared in Example 1-2, and the plasmid prepared in Examples 1-3
- the strain introduced into the L-lysine-producing strain, Corynebacterium glutamicum CJ3P (Binder et al. Genome Biology 2012, 13:R40) in the same manner as in Example 2-1 was prepared and , CJ3P::P(cj7)-gapN(L), CJ3P::P(cj7)-gapN(S), and CJ3P::P(cj7)-gapN(C), respectively.
- the CJ3P strain introduced three types of mutations (pyc(Pro458Ser), hom(Val59Ala), lysC(Thr311Ile)) into wild strains based on previously known technology to have L-lysine-producing ability Corynebacterium glutami. cum strain.
- the prepared strain was cultured in the same manner as in Example 2-1, and after completion of the culture, the production ability of L-lysine was measured by HPLC.
- the L-lysine concentration and the concentration increase rate in the culture medium for each strain tested are shown in Table 6 below.
- the concentration of L-lysine increased by about 8% in CJ3P::P(cj7)-gapN(S) into which the gapN gene was introduced compared to the L-lysine-producing strain CJ3P, CJ3P::P(cj7) It was confirmed that the concentration of L-lysine increased by about 13% in )-gapN(L), and the concentration of L-lysine increased by about 4% in CJ3P::P(cj7)-gapN(C).
- Example 2-4 Production and evaluation of strains introduced with gapN(L), gapN(S) or gapN(C) in L-lysine-producing strain KCCM10770P
- Example 1-1-1 In order to confirm the effect in another lysine-producing strain belonging to Corynebacterium glutamicum, the plasmid prepared in Example 1-1-1, the plasmid prepared in Example 1-2, and the plasmid prepared in Examples 1-3 Using a plasmid, the strain introduced into Corynebacterium glutamicum KCCM10770P (Korea Patent No. 10-0924065), which is an L-lysine-producing strain with enhanced lysine biosynthesis pathway, in the same manner as in Example 2-1.
- KCCM10770P::P(cj7)-gapN(C) were produced, and named as KCCM10770P::P(cj7)-gapN(L), KCCM10770P::P(cj7)-gapN(S), KCCM10770P::P(cj7)-gapN(C), respectively.
- the KCCM10770P strain is a lysine biosynthetic pathway constituting genes aspB (gene encoding aspartate aminotransferase), lysC (gene encoding aspartate kinase), asd (gene encoding aspartate semialdehyde dehydrogenase) ), dapA (gene encoding dihydrodipicolinate synthase), dapB (gene encoding dihydrodipicolinate reductase) and lysA (gene encoding diaminodipimelate decarboxylase), i.e. , an L-lysine-producing strain having two copies of each of the six genes on the chromosome.
- the prepared strain was cultured in the same manner as in Example 2-1, and after completion of the culture, the production ability of L-lysine was measured by HPLC.
- the L-lysine concentration and the concentration increase rate in the culture medium for each strain tested are shown in Table 7 below.
- the concentration of L-lysine increased by about 17% in KCCM10770P::P(cj7)-gapN(S) introduced with the gapN gene compared to the L-lysine-producing strain KCCM10770P, KCCM10770P::P(cj7) It was confirmed that the concentration of L-lysine increased by about 25% in )-gapN(L), and the concentration of L-lysine increased by about 10% in KCCM10770P::P(cj7)-gapN(C).
- Example 3-1 Production and evaluation of strains introduced with gapN(L) or gapN(S) in L-threonine-producing strains
- PCR was performed using primers of SEQ ID NOs: 17 and 18 or SEQ ID NOs: 19 and 20 using the WT chromosome as a template. After denaturation at 95° C. for 5 minutes, denaturation at 95° C. for 30 seconds, annealing at 55° C. for 30 seconds, and polymerization at 72° C. for 30 seconds were repeated 30 times, followed by polymerization at 72° C. for 7 minutes. As a result, a 509 bp DNA fragment in the 5' upper region and a 520 bp DNA fragment in the 3' lower region were obtained based on the mutation of the lysC gene, respectively.
- PCR was performed with primers of SEQ ID NOs: 17 and 20. After denaturation at 95° C. for 5 minutes, denaturation at 95° C. for 30 seconds, annealing at 55° C. for 30 seconds, and polymerization at 72° C. for 60 seconds were repeated 30 times, followed by polymerization at 72° C. for 7 minutes.
- a 1011 bp DNA fragment containing a mutation in the lysC gene encoding an aspartokinase variant in which the leucine at position 377 was substituted with a lysine was amplified.
- the transformed strain was obtained in a selective medium containing 25 mg/L of kanamycin.
- a strain WT::lysC (L377K) in which a nucleotide mutation was introduced into the lysC gene was obtained by a DNA fragment inserted into the chromosome through a secondary recombination process (cross-over).
- PCR was performed using primers of SEQ ID NOs: 21 and 22 and primers of SEQ ID NOs: 23 and 24 using WT genomic DNA as a template. PCR conditions were repeated 30 times of denaturation at 95° C. for 5 minutes, then denaturation at 95° C. for 30 seconds, annealing at 55° C. for 30 seconds, and polymerization at 72° C. for 30 seconds, followed by polymerization at 72° C. for 7 minutes. As a result, a 290 bp DNA fragment at the 5' upper end and a 170 bp DNA fragment at the 3' lower end were obtained centering on the hom gene mutation.
- PCR was performed using the primers of SEQ ID NOs: 21 and 24 using the two PCR products as templates. After denaturation at 95°C for 5 minutes, denaturation at 95°C for 30 seconds, annealing at 55°C for 30 seconds, and polymerization at 72°C for 30 seconds were repeated 30 times, followed by polymerization at 72°C for 7 minutes. As a result, a 440 bp DNA fragment containing the hom gene mutation was amplified.
- the obtained pDZ-hom(R398Q) vector was introduced into the WT::lysC(L377K) strain by electroporation, and then the transformed strain was obtained in a selective medium containing 25 mg/L of kanamycin.
- Example 1-1-2 The plasmid prepared in Example 1-1-2 and the plasmid prepared in Example 1-2 were introduced into the WT::lysC(L377K)-hom(R398Q) strain, and in the same manner as in Example 2-1.
- the strains were constructed and WT::lysC(L377K)-hom(R398Q)::P(cj7)-gapN(L), WT::lysC(L377K)-hom(R398Q)::P(cj7)-gapN( S) was named.
- the prepared strain was cultured in the same manner as in Example 2-1, and the L-threonine production ability was compared after the culture was terminated.
- the L-threonine concentration and the concentration increase rate in the culture medium for each strain tested are shown in Table 10 below.
- WT::lysC(L377K)-hom(R398Q)::P(cj7)-gapN(L) was named CA09-0906 and deposited with the Korea Microorganism Conservation Center, an institution under the Budapest Treaty, as of September 2, 2019. It was given accession number KCCM12586P.
- Example 3-2 Production and evaluation of strains introduced with gapN(L) or gapN(S) in L-threonine producing strain KCCM11222P
- Example 1-1-2 and the plasmid prepared in Example 1-2 were introduced into Corynebacterium glutamicum KCCM11222P (WO2013/081296), which is an L-threonine-producing strain, and the above Example Strains were prepared in the same manner as in 2-1, and were named KCCM11222P::P(cj7)-gapN(L) and KCCM11222P::P(cj7)-gapN(S), respectively.
- the prepared strain was cultured in the same manner as in Example 2-1, and the L-threonine production ability was compared after the culture was terminated.
- the L-threonine concentration and the concentration increase rate in the culture medium for each strain tested are shown in Table 11 below.
- Example 4-1 Production and evaluation of strains introduced with gapN(L) or gapN(S) in L-isoleucine-producing strains
- Corynebacterium glutamicum ATCC13032 (hereinafter WT) strain based on L. delbrueckii subsp.
- WT Corynebacterium glutamicum ATCC13032
- ilvA mutation [ilvA (V323A); S. Morbach et al., Appl. Enviro. Microbiol., 62(12): 4345-4351, 1996] was introduced to prepare a strain with enhanced L-isoleucine production ability.
- a pair of primers (SEQ ID NOs: 25 and 26) for amplifying the 5' upper region around the mutation site and a pair of primers for amplifying the 3' lower region (SEQ ID NOs: 27 and 28) was devised.
- a BamHI restriction enzyme site (indicated by an underline) was inserted at each end, and the primers of SEQ ID NOs: 26 and 27 were designed to cross each other so that a nucleotide substitution mutation (indicated by an underline) was located. did.
- PCR was performed using the primers of SEQ ID NO: 25 and SEQ ID NO: 26, SEQ ID NO: 27 and SEQ ID NO: 28 using the WT chromosome as a template. PCR conditions were repeated 30 times of denaturation at 95° C. for 5 minutes, then denaturation at 95° C. for 30 seconds, annealing at 55° C. for 30 seconds, and polymerization at 72° C. for 30 seconds, followed by polymerization at 72° C. for 7 minutes. As a result, a 627 bp DNA fragment at the 5' upper end and a 608 bp DNA fragment at the 3' lower end were obtained centering on the mutation of the ilvA gene.
- PCR was performed with primers of SEQ ID NO: 25 and SEQ ID NO: 28. After denaturation at 95° C. for 5 minutes, denaturation at 95° C. for 30 seconds, annealing at 55° C. for 30 seconds, and polymerization at 72° C. for 60 seconds were repeated 30 times, followed by polymerization at 72° C. for 7 minutes.
- a 1217 bp DNA fragment containing a mutation in the ilvA gene encoding the IlvA variant in which valine at position 323 was substituted with alanine was amplified.
- the pECCG117 vector (Korean Patent No. 10-0057684) and a DNA fragment of 1011 bp were treated with a restriction enzyme BamHI, ligated using a DNA conjugation enzyme, and then cloned to obtain a plasmid, which was called pECCG117-ilvA (V323A). named.
- R398Q By introducing into the R398Q)::P(cj7)-gapN(S) strain, a strain in which the ilvA(V323A) mutation was introduced was prepared.
- a strain in which only ilvA(V323A) mutation was introduced into WT::lysC(L377K)-hom(R398Q) was also prepared.
- the prepared strain was cultured in the same manner as in Example 2-1, and the L-isoleucine-producing ability was compared after the end of the culture.
- the L-isoleucine concentration and the concentration increase rate in the culture medium for each strain tested are shown in Table 13 below.
- WT::lysC(L377K)-hom(R398Q)::P(cj7)-gapN(L)/pECCG117-ilvA(V323A) was named CA10-3108, It was deposited on September 2 and was given accession number KCCM12582P.
- Example 4- Production and evaluation of the strain introduced with gapN(L) or gapN(S) in the L-isoleucine producing strain KCCM11248P
- Example 1-1-2 and the plasmid prepared in Example 1-2 were introduced into L-isoleucine-producing strain, Corynebacterium glutamicum KCCM11248P (Korean Patent No. 10-1335789), Strains were prepared in the same manner as in Example 2-1, and were named KCCM11248P::P(cj7)-gapN(L) and KCCM11248P::P(cj7)-gapN(S), respectively.
- the produced strain was cultured in the same manner as in Example 2-1 to compare L-isoleucine production ability. After completion of the culture, the production ability of L-isoleucine was measured by HPLC, and the L-isoleucine concentration and concentration increase rate in the culture solution for each strain tested are shown in Table 14 below.
- the concentration of L-isoleucine increased by about 38% in KCCM11248P::P(cj7)-gapN(S) into which the gapN gene was introduced compared to the L-isoleucine-producing strain KCCM11248P, KCCM11248P::P(cj7) )-gapN(L), it was confirmed that the concentration of L-isoleucine increased by about 61.5%.
- Example 5-1 Production and evaluation of strains introduced with gapN(L) or gapN(S) in L-leucine-producing strains
- the recombinant plasmid pDZ-leuA (R558H, G561D) prepared in the above patent was introduced into the WT strain by an electric pulse method, and then selected in a medium containing 25 mg/l of kanamycin.
- a strain in which nucleotide mutations were introduced into the leuA gene, WT::leuA (R558H, G561D) was obtained by a DNA fragment inserted on the chromosome through a secondary recombination process (cross-over), and it was named CJL8001.
- Example 2- Strains were prepared in the same manner as in 1, and named as CJL8001::P(cj7)-gapN(S) and CJL8001::P(cj7)-gapN(L), respectively.
- the produced strain was cultured in the following manner to compare the leucine-producing ability. After subculture of each strain in a nutrient medium, each strain was inoculated into a 250 ml corner-baffle flask containing 25 ml of the production medium, and cultured with shaking at 30° C. for 72 hours at 200 rpm. Then, the concentration of L- leucine was analyzed using HPLC, and the concentration and the concentration increase rate of the analyzed L- leucine are shown in Table 15 below.
- Glucose 10g broth 5g, polypeptone 10g, sodium chloride 2.5g, yeast extract 5g, agar 20g, urea 2g (based on 1 liter of distilled water)
- Glucose 50 g Ammonium Sulfate 20 g, Corn Steep Solids 20 g, Potassium Dibasic 1 g, Magnesium Sulfate 0.5 g, Biotin 100 ⁇ g, Thiamine-HCl 1 mg, Calcium Carbonate 15 g (distilled water) 1 liter)
- CJL8001::P(cj7)-gapN(L) was named CA13-8102 and deposited with the Korea Microorganism Conservation Center, a trustee institution under the Budapest Treaty, on September 2, 2019, and was given accession number KCCM12583P.
- Example 5-2 Production and evaluation of L-leucine producing strains KCCM11661P, KCCM11662P with gapN (L) or gapN (S) introduced strain
- Example 1-1-1 L-leucine-producing strains Corynebacterium glutamicum KCCM11661P (Korean Patent No. 10-1851898), KCCM11662P (Korean Patent No. 10-1796830) was produced in Example 1-1-1
- KCCM11662P::P(cj7)-gapN(L) were named.
- the prepared strain was cultured in the same manner as in Example 5-1, and L-leucine production ability was compared after the culture was terminated.
- the concentration and concentration increase rate of L-leucine produced in each strain are shown in Table 16 below.
- the gapN gene introduced KCCM11661P::P(cj7)-gapN(S), KCCM11662P::P(cj7)-gapN(S) compared to L-leucine-producing strains KCCM11661P and KCCM11662P, L- It was confirmed that the concentration of leucine increased by about 4%, and the concentration of L-leucine increased by about 11% in KCCM11661P::P(cj7)-gapN(L), KCCM11662P::P(cj7)-gapN(L).
- Example 6-1 Production and evaluation of strains introduced with gapN(L) or gapN(S) in L-valine producing strains
- PCR was performed using the genomic DNA of the ATCC13869 strain, which is a wild-type Corynebacterium glutamicum, as a template.
- gene fragments (A, B) were obtained using the primer pair of SEQ ID NO: 29 and SEQ ID NO: 30, and the primer pair of SEQ ID NO: 31 and SEQ ID NO: 32, respectively.
- PCR conditions include denaturation at 94°C for 5 minutes, then denaturation at 94°C for 30 seconds, annealing at 55°C for 30 seconds, and polymerization at 72°C for 60 seconds, repeated 25 times, and polymerization was performed at 72°C for 7 minutes. .
- the obtained 1044bp DNA fragment and the previously used pDZ vector were treated with restriction enzyme XbaI, ligated using a conjugation enzyme, and then cloned to obtain a plasmid, which was named pDZ-ilvN (A42V).
- SEQ ID NO: sequence (5'-3') 29 AATTTCTAGAGGCAGACCCTATTCTATGAAGG 30 AGTGTTTCGGTCTTTACAGACACGAGGGAC 31 GTCCCTCGTGTCTGTAAAGACCGAAACACT 32 AATTTCTAGACGTGGGAGTGTCACTCGCTTGG
- the recombinant plasmid pDZ-ilvN (A42V) prepared above was introduced into the wild-type Corynebacterium glutamicum ATCC13869 by an electric pulse method by homologous recombination on the chromosome, and then containing 25 mg/L of kanamycin.
- Transformed strains were obtained from one selective medium. After amplifying the gene fragment through PCR using the primers of SEQ ID NO: 29 and SEQ ID NO: 32 for the Corynebacterium glutamicum transformant on which the secondary recombination has been completed, the mutation introduced strain is identified through gene sequence analysis did.
- the recombinant strain was named Corynebacterium glutamicum CJ8V.
- Example 1-1-3 the plasmid prepared in Example 1-1-3 and the plasmid prepared in Example 1-2 were introduced to Corynebacterium glutamicum CJ8V having L-valine-producing ability
- Strains were prepared in the same manner as in 2-1 and named CJ8V::P(cj7)-gapN(L) and CJ8V::Pcj7-gapN(S), respectively.
- the produced strain was cultured in the following manner to compare L-valine production ability.
- each strain was subcultured in a nutrient medium, each strain was inoculated in a 250 ml corner-baffle flask containing 25 ml of the production medium, and cultured with shaking at 30° C. for 72 hours at 200 rpm. Thereafter, the concentration of L-valine was analyzed using HPLC, and the analyzed concentration and the increase rate of the concentration of L-valine are shown in Table 18 below.
- Glucose 10g broth 5g, polypeptone 10g, sodium chloride 2.5g, yeast extract 5g, agar 20g, urea 2g (based on 1 liter of distilled water)
- CJ8V-Pcj7/gapN(L) was named CA08-2038 and deposited with the Korea Microorganism Conservation Center, a trustee institution under the Budapest Treaty, on September 2, 2019, and was given accession number KCCM12581P.
- Example 6-2 Production and evaluation of strains introduced with gapN(L) or gapN(S) in L-valine producing strain KCCM11201P
- Example 1-1-3 and the plasmid prepared in Example 1-2 were introduced into L-valine-producing strain, Corynebacterium glutamicum KCCM11201P (Korean Patent No. 10-1117022), Strains were prepared in the same manner as in Example 2-1, and were named KCCM11201P::P(cj7)-gapN(L) and KCCM11201P::P(cj7)-gapN(S), respectively.
- the L-valine concentration was analyzed by culturing in the same manner as in Example 6-1, and the analyzed L-valine concentration and the concentration increase rate are shown in Table 19 below. .
- Example 7-1 Production and evaluation of strains introduced with gapN(L) or gapN(S) in L-arginine-producing strains
- Example 1-1-3 the plasmid prepared in Example 1-1-3 and Example 1- targeting the wild strain Corynebacterium glutamicum ATCC21831
- strains were prepared in the same manner as in Example 2-1, and named ATCC21831::P(cj7)gapN(L), ATCC21831::P(cj7)-gapN(S), respectively. did.
- the produced strain was cultured in the following way to compare L-arginine production ability. After subculture of each strain in a nutrient medium, each strain was inoculated into a 250 ml corner-baffle flask containing 25 ml of the seed medium, and cultured with shaking at 30° C. for 20 hours at 200 rpm. Then, 1 ml of the seed culture solution was inoculated into a 250 ml corner-baffle flask containing 24 ml of the production medium and cultured with shaking at 30° C. for 72 hours at 200 rpm.
- the composition of the nutrient medium, the species medium, and the production medium is as follows, respectively. After the end of the culture, the production of L-arginine was measured by HPLC, and the analyzed concentration and concentration increase rate of L-arginine are shown in Table 20 below.
- Glucose 10 g broth 5 g, polypeptone 10 g, sodium chloride 2.5 g, yeast extract 5 g, agar 20 g, urea 2 g (based on 1 liter of distilled water)
- ATCC21831::P(cj7)gapN(L) was named CA06-2951 and deposited with the Korea Microorganism Conservation Center, a trustee institution under the Budapest Treaty on September 2, 2019, and was given accession number KCCM12580P.
- Example 7-2 Production and evaluation of strains introduced with gapN(L) or gapN(S) in L-arginine-producing strain KCCM10741P
- Example 1-1-3 The plasmid prepared in Example 1-1-3 and the plasmid prepared in Example 1-2 were introduced into the L-arginine-producing strain, Corynebacterium glutamicum KCCM10741P (Korean Patent No. 10-0791659).
- strains were prepared in the same manner as in Example 2-1 and named KCCM10741P::P(cj7)-gapN(L), KCCM10741P::P(cj7)-gapN(S), respectively.
- the concentration of L-arginine was analyzed by culturing in the same manner as in Example 7-1, and the concentration and concentration increase rate of the analyzed L-arginine are shown in Table 21 below. .
- Example 8-1 Production and evaluation of strains introduced with gapN(L) or gapN(S) in O-acetyl homoserine-producing strains
- Example 1-1-1 and the plasmid prepared in Example 1-2 were introduced into the wild-type strain, Corynebacterium glutamicum ATCC13032, to prepare a strain in the same manner as in Example 2-1. and ATCC13032::P(cj7)-gapN(L), ATCC13032::P(cj7)-gapN(S), respectively.
- the produced strain was cultured in the following manner to compare the production ability of O-acetyl homoserine.
- Each strain was inoculated in a 250 ml corner-baffle flask containing 25 ml of the seed medium, and incubated at 30° C. for 20 hours with shaking at 200 rpm. Then, 1 ml of the seed culture solution was inoculated into a 250 ml corner-baffle flask containing 24 ml of the production medium and cultured with shaking at 30° C. for 48 hours at 200 rpm.
- the composition of the species medium and the production medium is as follows, respectively.
- Glucose 50 g (NH 4 ) 2 SO 4 12.5 g, Soy Protein 2.5 g, Corn Steep Solids 5 g, Urea 3 g, KH 2 PO 4 1 g, MgSO 4 7H 2 O 0.5 g, Biotin 100 ⁇ g, thiamine hydrochloride 1000 ⁇ g, calcium-pantothenic acid 2,000 ⁇ g, nicotinamide 3000 ⁇ g, CaCO 3 30 g (based on 1 liter of distilled water)
- O-acetyl homoserine concentration and concentration increase rate in the culture medium for each strain tested are shown in Table 22 below.
- strain name O-acetyl homoserine concentration (g/L) O-acetyl homoserine concentration increase (%) ATCC13032 0.3 g/L - ATCC13032::P(cj7)-gapN(S) 0.4 g/L 33% ATCC13032::P(cj7)-gapN(L) 0.5 g/L 67%
- the concentration of O-acetyl homoserine increased by about 33% in ATCC13032::P(cj7)-gapN(S) into which the gapN gene was introduced compared to ATCC13032, which is a wild-type strain, ATCC13032:::P ( It was confirmed that the concentration of O-acetyl homoserine increased by about 67% in cj7)-gapN(L).
- ATCC13032:::P(cj7)-gapN(L) was named CM04-0531 and was deposited with the Korea Microorganism Conservation Center, a trustee institution under the Budapest Treaty on September 2, 2019, and was given an accession number KCCM12584P.
- Example 8-2 In the O-acetyl homoserine producing strain Corynebacterium glutamicum strain L. delbrueckii subsp. Bulgaricus gapN(L) or S. mutans Production and evaluation of strains into which the derived gapN(S) is introduced
- SEQ ID NOs: 33 and 34 Based on the reported sequence derived from WT (Wild type) to amplify the gene encoding MetX, SEQ ID NOs: 33 and 34 for amplification from the promoter site (about 300 bp above the start codon) to the terminator site (about 100 bp at the bottom of the stop codon) devised. BamHI restriction enzyme sites were inserted at both ends of the primers of SEQ ID NOs: 33 and 34. PCR conditions were repeated 30 times of denaturation at 95°C for 5 minutes, denaturation at 95°C for 30 seconds, annealing at 55°C for 30 seconds, and polymerization at 72°C for 90 seconds, followed by polymerization at 72°C for 7 minutes.
- pECCG117-metX WT a DNA fragment of 1546 bp of the coding region of the metX gene was obtained.
- the pECCG117 vector (Korean Patent No. 10-0057684) and the metX DNA fragment were treated with BamHI, ligated using a DNA conjugation enzyme, and then cloned to obtain a plasmid, which was named pECCG117-metX WT.
- the prepared strains were cultured in the same manner as in the flask culture method of Example 8-1, and the concentration and concentration increase rate of O-acetyl homoserine in the culture medium were analyzed, and the results are shown in Table 24.
- strain name O-acetyl homoserine concentration (g/L) O-acetyl homoserine concentration increase (%) WT::lysC(L377K)-hom(R398Q)/pECCG117-metX WT 2.0 g/L - WT::lysC(L377K)-hom(R398Q)::P(cj7)-gapN(S)/pECCG117-metX WT 2.7 g/L 35% WT::lysC(L377K)-hom(R398Q)::P(cj7)-gapN(L)/pECCG117-metX WT 3.1 g/L 55%
- the concentration of O-acetyl homoserine increased by about 35%
- Example 9-1 Production and evaluation of strains introduced with gapN(L) or gapN(S) in glutamic acid-producing strains
- Each strain was inoculated in a 250 ml corner-baffle flask containing 25 ml of the seed medium, and incubated at 30° C. for 20 hours with shaking at 200 rpm. Then, a 250 ml corner-baffle flask containing 25 ml of the production medium was inoculated with 1 ml of the seed culture and cultured with shaking at 30° C. for 40 hours at 200 rpm. Cultivation was carried out in biotin-restricted conditions. After completion of the culture, the L-glutamic acid concentration and the concentration increase rate were measured through the method using HPLC, and the measurement results are shown in Table 25 below.
- ATCC13869:::P(cj7)-gapN(L) was named CA02-1360 and deposited with the Korea Microorganism Conservation Center, a trustee under the Budapest Treaty, on September 2, 2019, and was given accession number KCCM12587P.
- Example 9-2 Production and evaluation of strains introduced with gapN(L) or gapN(S) in L-glutamic acid producing strain KFCC11074
- Example 1-1-4 The plasmid prepared in Example 1-1-4 and the plasmid prepared in Example 1-2 were introduced into the L-glutamic acid producing strain, Corynebacterium glutamicum KFCC11074 strain (Korean Patent No. 10-0292299).
- the strains prepared in the same manner as in Example 2-1 were named KFCC11074::P(cj7)-gapN(L) and KFCC11074::P(cj7)-gapN(S), respectively.
- the concentration of L-glutamic acid was analyzed by culturing in the same manner as in Example 10-1, and the analyzed concentration and concentration increase rate of L-glutamic acid are shown in Table 26 below. .
- L. delbrueckii subsp. Bulgaricus or S. mutans- derived gapN gene introduction improves L-amino acid production, and in particular, L. delbrueckii subsp.
- the gapN gene derived from Bulgaricus was introduced, it was confirmed that it exhibited better L-amino acid production ability.
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Abstract
Description
서열번호 | 서열(5'-3') |
3 | CCCAACGAAAGGAAACACTCATGACAGAACACTATTTAAA |
4 | GCTTGTGAATAAGCCTGCCCTTAGTCTTCGATGTTGAAGACAACG |
5 | GATTCCAGGTTCCTTAACCCAGAAACATCCCAGCGCTACT |
6 | TTTAAATAGTGTTCTGTCATGAGTGTTTCCTTTCGTTGGG |
7 | TTTCGTGCGAGTCTAGAAGTTTAGTCTTCGATGTTGAAGA |
8 | ACGAGGTCAGCATCTCGAGTAGAAACATCCCAGCGCTACT |
9 | CGCGGAACTGTACTAGTAGAAACATCCCAGCGCTAC |
10 | GGAAGGATATCTCTAGAAGATAAAACGAAAGGCC |
11 | CCCTTCCGGTTTAGTACTAGAAACATCCCAGCGCTA |
12 | CTCTTCCTGTTTAGTACTTTAGTCTTCGATGTTGAAG |
서열번호 | 서열(5'-3') |
15 | TAGATGTCGGGCCCCATATGAGAAACATCCCAGCGCTACT |
16 | GCCAAAACAGCCTCGAGTTATTTGATATCAAATACGACGGATTTA |
서열번호 | 서열(5'-3') |
37 | ACCCAACGAAAGGAAACACTCatgtttgaaaatatatcatcaaa |
38 | GCCAAAACAGCCTCGAGttataggtttaaaactattgatt |
39 | tttgatgatatattttcaaacatGAGTGTTTCCTTTCGTTGGGT |
균주명 | L-라이신 농도(g/L) | L-라이신 농도 증가율(%) |
KCCM11016P | 43 g/L | - |
KCCM11016P::P(cj7)-gapN(S) | 50 g/L | 16% |
KCCM11016P:::P(cj7)-gapN(L) | 52 g/L | 20% |
KCCM11016P:::P(cj7)-gapN(C) | 47 g/L | 9% |
균주명 | L-라이신 농도(g/L) | L-라이신 농도 증가율(%) |
KCCM11347P | 38 g/L | - |
KCCM11347P::P(cj7)-gapN(S) | 43 g/L | 14% |
KCCM11347P:::P(cj7)-gapN(L) | 45 g/L | 19% |
KCCM11347P:::P(cj7)-gapN(C) | 40g/L | 5% |
균주명 | L-라이신 농도(g/L) | L-라이신 농도 증가율(%) |
CJ3P | 8.3 g/L | - |
CJ3P::P(cj7)-gapN(S) | 9.0 g/L | 8% |
CJ3P::P(cj7)-gapN(L) | 9.4 g/L | 13% |
CJ3P::P(cj7)-gapN(C) | 8.7 g/L | 4% |
균주명 | L-라이신 농도(g/L) | L-라이신 농도 증가율(%) |
KCCM10770P | 48 g/L | - |
KCCM10770P::P(cj7)-gapN(S) | 56 g/L | 17% |
KCCM10770P::P(cj7)-gapN(L) | 60 g/L | 25% |
KCCM10770P::P(cj7)-gapN(C) | 53 g/L | 10% |
서열번호 | 서열(5'-3') |
17 | TCCTCTAGAGCTGCGCAGTGTTGAATACG |
18 | TGGAAATCTTTTCGATGTTCACGTTGACAT |
19 | ACATCGAAAAGATTTCCACCTCTGAGATTC |
20 | GACTCTAGAGTTCACCTCAGAGACGATTA |
서열번호 | 서열(5'-3') |
21 | TCCTCTAGACTGGTCGCCTGATGTTCTAC |
22 | CTCTTCCTGTTGGATTGTAC |
23 | GTACAATCCAACAGGAAGAG |
24 | GACTCTAGATTAGTCCCTTTCGAGGCGGA |
균주명 | L-쓰레오닌 농도(g/L) | L-쓰레오닌 농도 증가율(%) |
WT::lysC(L377K)-hom(R398Q) | 1.21 g/L | - |
WT::lysC(L377K)-hom(R398Q)::P(cj7)-gapN(S) | 1.39 g/L | 15% |
WT::lysC(L377K)-hom(R398Q)::P(cj7)-gapN(L) | 1.48 g/L | 22% |
균주명 | L-쓰레오닌 농도(g/L) | L-쓰레오닌 농도 증가율(%) |
KCCM11222P | 3.6 g/L | - |
KCCM11222P::P(cj7)-gapN(S) | 4.1 g/L | 14% |
KCCM11222P::P(cj7)-gapN(L) | 4.3 g/L | 20% |
서열번호 | 서열(5'-3') |
25 | ACGGATCCCAGACTCCAAAGCAAAAGCG |
26 | ACACCACGGCAGAACCAGGTGCAAAGGACA |
27 | CTGGTTCTGCCGTGGTGTGCATCATCTCTG |
28 | ACGGATCCAACCAAACTTGCTCACACTC |
균주명 | L-이소류신 농도(g/L) | L-이소류신 농도 증가율(%) |
WT::lysC(L377K)-hom(R398Q)/pECCG117-ilvA(V323A) | 4.3 g/L | - |
WT::lysC(L377K)-hom(R398Q)::P(cj7)-gapN(S) /pECCG117-ilvA(V323A) | 5.1 g/L | 18% |
WT::lysC(L377K)-hom(R398Q)::P(cj7)-gapN(L)/pECCG117-ilvA(V323A) | 5.6 g/L | 30% |
균주명 | L-이소류신 농도(g/L) | L-이소류신 농도 증가율(%) |
KCCM11248P | 1.3 g/L | - |
KCCM11248P::P(cj7)-gapN(S) | 1.8 g/L | 38% |
KCCM11248P::P(cj7)-gapN(L) | 2.1 g/L | 61.5% |
균주명 | L-루이신 농도(g/L) | L-루이신 농도 증가율(%) |
CJL8001 | 3.4 | - |
CJL8001::P(cj7)-gapN(S) | 3.9 | 15% |
CJL8001::P(cj7)-gapN(L) | 4.1 | 21% |
균주명 | L-루이신 농도(g/L) | L-루이신 농도 증가율(%) |
KCCM11661P | 2.7 g/L | - |
KCCM11661P::P(cj7)-gapN(S) | 2.8 g/L | 4% |
KCCM11661P::P(cj7)-gapN(L) | 3.0 g/L | 11% |
KCCM11662P | 3.0 g/L | - |
KCCM11662P::P(cj7)-gapN(S) | 3.1 g/L | 3% |
KCCM11662P::P(cj7)-gapN(L) | 3.3 g/L | 11% |
서열번호 | 서열(5'-3') |
29 | AATTTCTAGAGGCAGACCCTATTCTATGAAGG |
30 | AGTGTTTCGGTCTTTACAGACACGAGGGAC |
31 | GTCCCTCGTGTCTGTAAAGACCGAAACACT |
32 | AATTTCTAGACGTGGGAGTGTCACTCGCTTGG |
균주명 | L-발린 농도(g/L) | L-발린 농도 증가율(%) |
CJ8V | 3.4 g/L | - |
CJ8V-Pcj7/gapN(S) | 3.8 g/L | 12% |
CJ8V-Pcj7/gapN(L) | 4.0 g/L | 18% |
균주명 | L-발린 농도(g/L) | L-발린 농도 증가율(%) |
KCCM11201P | 2.8 | - |
KCCM11201P:: P(cj7)-gapN(S) | 3.3 | 17% |
KCCM11201P::P(cj7)-gapN(L) | 3.7 | 32% |
균주명 | L-아르기닌 농도(g/L) | L-아르기닌 농도 증가율(%) |
ATCC21831 | 4.1 g/L | - |
ATCC21831::P(cj7)gapN(S) | 4.6 g/L | 12% |
ATCC21831::P(cj7)-gapN(L) | 4.9 g/L | 19% |
균주명 | L-아르기닌 농도(g/L) | L-아르기닌 농도 증가율(%) |
KCCM10741P | 3.1 g/L | - |
KCCM10741P::P(cj7)-gapN(S) | 3.4 g/L | 9% |
KCCM10741P::P(cj7)-gapN(L) | 3.8 g/L | 22% |
균주명 | O-아세틸 호모세린 농도(g/L) | O-아세틸 호모세린 농도 증가율(%) |
ATCC13032 | 0.3 g/L | - |
ATCC13032::P(cj7)-gapN(S) | 0.4 g/L | 33% |
ATCC13032::P(cj7)-gapN(L) | 0.5 g/L | 67% |
서열번호 | 서열(5'-3') |
33 | GGATCCCCTCGTTGTTCACCCAGCAACC |
34 | GGATCCCAAAGTCACAACTACTTATGTTAG |
균주명 | O-아세틸 호모세린 농도(g/L) | O-아세틸 호모세린 농도 증가율(%) |
WT::lysC(L377K)-hom(R398Q)/pECCG117-metX WT | 2.0 g/L | - |
WT::lysC(L377K)-hom(R398Q)::P(cj7)-gapN(S)/pECCG117-metX WT | 2.7 g/L | 35% |
WT::lysC(L377K)-hom(R398Q)::P(cj7)-gapN(L)/pECCG117-metX WT | 3.1 g/L | 55% |
균주명 | L-글루탐산 농도(g/L) | L-글루탐산 농도 증가율(%) |
ATCC13869 | 0.5 | - |
ATCC13869::P(cj7)-gapN(S) | 0.8 | 60% |
ATCC13869::P(cj7)-gapN(L) | 0.9 | 80% |
균주명 | L-글루탐산 농도(g/L) | L-글루탐산 농도 증가율(%) |
KFCC11074 | 11.8 | - |
KFCC11074::P(cj7)-gapN(S) | 14.5 | 22% |
KFCC11074::P(cj7)-gapN(L) | 16.2 | 37% |
Claims (7)
- 서열번호 1의 아미노산 서열을 포함하는, NADP 의존적 글리세르알데하이드-3-포스페이트 디하이드로지나제(NADP dependent glyceraldehyde-3-phosphate dehydrogenase)를 포함하는 코리네박테리움 속 미생물을 배지에서 배양하는 단계; 및 상기 배양된 미생물 또는 배양물로부터 L-아미노산을 회수하는 단계;를 포함하는, L-아미노산 생산 방법.
- 제1항에 있어서, 상기 서열번호 1의 아미노산 서열은 락토바실러스 델부루키 아종 불가리쿠스(Lactobacillus delbrueckii subsp. Bulgaricus) 유래인, L-아미노산 생산 방법.
- 제1항에 있어서, 상기 코리네박테리움 속 미생물은 코리네박테리움 글루타미쿰(Corynebacterium glutamicum)인, L-아미노산 생산 방법.
- 서열번호 1의 아미노산 서열을 포함하는, NADP 의존적 글리세르알데하이드-3-포스페이트 디하이드로지나제(NADP dependent glyceraldehyde-3-phosphate dehydrogenase)를 포함하는, L-아미노산 생산능이 증가된 코리네박테리움 속 미생물.
- 제4항에 있어서, 상기 서열번호 1의 아미노산 서열은 락토바실러스 델부루키 아종 불가리쿠스(Lactobacillus delbrueckii subsp. Bulgaricus) 유래인, 코리네박테리움 속 미생물.
- 제4항에 있어서, 상기 코리네박테리움 속 미생물은 코리네박테리움 글루타미쿰(Corynebacterium glutamicum)인, 코리네박테리움 속 미생물.
- 서열번호 1의 아미노산 서열을 포함하는, NADP 의존적 글리세르알데하이드-3-포스페이트 디하이드로지나제(NADP dependent glyceraldehyde-3-phosphate dehydrogenase)를 포함하는 코리네박테리움 속 미생물의 L-아미노산 생산 용도.
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JP2021526713A JP7193902B2 (ja) | 2020-01-21 | 2021-01-21 | Nadp依存的グリセルアルデヒド-3-ホスフェートデヒドロゲナーゼを含む微生物を用いてl-アミノ酸を生産する方法 |
US17/423,262 US12173341B2 (en) | 2020-01-21 | 2021-01-21 | Method for producing L-amino acids using microorganism containing NADP-dependent glyceraldehyde-3-phosphate dehydrogenase |
CN202180001841.2A CN113785070B (zh) | 2020-01-21 | 2021-01-21 | 利用含有nadp-依赖性甘油醛-3-磷酸脱氢酶的微生物产生l-氨基酸的方法 |
BR112021007124-5A BR112021007124B1 (pt) | 2020-01-21 | 2021-01-21 | Método para produzir aminoácidos l com o uso do micro-organismo contendo gliceraldeído-3-fosfato desidrogenase dependente de nadp |
EP21724998.6A EP3878965A4 (en) | 2020-01-21 | 2021-01-21 | PROCESS FOR THE PRODUCTION OF L-AMINO ACIDS USING MICROORGANISMS FROM MICROORGANISMS PRODUCING NADP-DEPENDENT GLYCERALDEHYDE-3-PHOSPHATE DEHYDROGENASE |
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