WO2024035191A1 - 케톨산 리덕토아이소머라제 변이체 및 이를 이용한 l-발린 생산 방법 - Google Patents
케톨산 리덕토아이소머라제 변이체 및 이를 이용한 l-발린 생산 방법 Download PDFInfo
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- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
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- C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
- C12N9/0004—Oxidoreductases (1.)
- C12N9/0006—Oxidoreductases (1.) acting on CH-OH groups as donors (1.1)
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- 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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- C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
- C12N9/0004—Oxidoreductases (1.)
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- C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
- C12N9/90—Isomerases (5.)
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- C12P13/00—Preparation of nitrogen-containing organic compounds
- C12P13/04—Alpha- or beta- amino acids
- C12P13/08—Lysine; Diaminopimelic acid; Threonine; Valine
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- C12Y101/00—Oxidoreductases acting on the CH-OH group of donors (1.1)
- C12Y101/01—Oxidoreductases acting on the CH-OH group of donors (1.1) with NAD+ or NADP+ as acceptor (1.1.1)
- C12Y101/01086—Ketol-acid reductoisomerase (1.1.1.86)
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- 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 producing L-valine comprising a ketol acid reductoisomerase variant, a polynucleotide encoding the variant of the present application, a ketol acid reductoisomerase variant of the present application or a polynucleotide encoding the same, and
- the present application relates to a method for producing L-valine using microorganisms.
- L-amino acid is the basic building block of protein and is used as an important material for pharmaceutical ingredients, food additives, animal feed, nutrients, pesticides, and disinfectants.
- branched chain amino acids BCAA
- BCAA branched chain amino acids
- the branched chain amino acids have antioxidant effects and promote protein synthesis in muscle cells. There is.
- branched chain amino acids using microorganisms is mainly carried out by microorganisms of the genus Corynebacterium, and is known to be biosynthesized from pyruvic acid through several steps. [APPLIED AND ENVIRONMENTAL MICROBIOLOGY, Dec. 2010, p. 8053-8061].
- the production of branched chain amino acids through microorganisms has the problem that industrial mass production is not easy.
- One purpose of the present application is to provide a ketolic acid reductoisomerase variant in which the amino acid corresponding to position 87 in the amino acid sequence of SEQ ID NO: 1 is substituted with valine (V) or aspartate (D).
- Another object of the present application is to provide polynucleotides encoding the variants of the present application.
- Another object of the present application is to provide a variant of the present application or a microorganism containing a polynucleotide encoding the variant of the present application.
- Another object of the present application is to provide a method for producing L-valine, comprising culturing the microorganism of the present application in a medium.
- Another object of the present application is to provide a composition for producing L-valine containing the microorganism of the present application, a medium culturing the microorganism of the present application, or a combination of two or more thereof.
- ketolic acid reductoisomerase variant wherein the amino acid corresponding to the 87th position of SEQ ID NO: 1 is replaced with another amino acid.
- ketolic acid reductoisomerase variant refers to any polypeptide having ketolic acid reductoisomerase activity or the 87th position from the N-terminus of SEQ ID NO: 1 in ketolic acid reductoisomerase. refers to a variant containing the substitution of the corresponding amino acid with another amino acid.
- variants of the present application may also be described as “ketolic acid reductoisomerase variant,” “(variant) polypeptide with ketolic acid reductoisomerase activity,” and “IlvC variant.”
- Ketol-acid reductoisomerase refers to an enzyme also referred to as “acetohydroxy acid isomeroreductase”, “KARI”, and “AHAIR”.
- -It is an enzyme involved in the biosynthesis of branched chain amino acids.
- the ketolic acid reductoisomerase can be classified as EC 1.1.1.86.
- acetohydroxy acid synthase catalyzes the decarboxylation of pyruvate and the condensation reaction with other pyruvate molecules to form acetolactate, a precursor of valine. It can produce acetolactate or catalyze the decarboxylation of pyruvic acid and the condensation reaction with 2-ketobutyrate to produce acetohydroxybutyrate, a precursor of isoleucine.
- Ketolic acid reductoisomerase uses acetolactic acid or acetohydroxybutyrate as a substrate to proceed with a reaction that can produce L-valine, L-leucine, and L-isoleucine.
- ketolic acid reductoisomerase converts 2-aceto-2-hydroxybutyrate into 2,3-dihydroxy-3-methyl valerate (2,3-dihydroxy- 3-methylvalerate), or 2-acetolactate can be converted to 2,3-dihydroxyisovalerate.
- the 2,3-dihydroxy-3-methylvalerate is produced by dihydroxy acid dehydratase and transaminase B. Through a catalyzed reaction, L-isoleucine is produced.
- 2-ketoisovalerate (2- ketoisovalerate) is produced, and 2-ketoisovalerate is converted to L-valine by transaminase B, or converted to 2-ketoisocaproate and then converted to L- through enzymatic conversion. It can be converted to leucine. Therefore, ketolic acid reductoisomerase is an important enzyme in the production of branched chain amino acids, including L-valine, L-leucine and L-isoleucine.
- the amino acid sequence of ketol acid reductoisomerase of the present application may be the amino acid sequence encoded by the ilvC gene, and may also be referred to as “IlvC protein.”
- the amino acid sequence of ketol acid reductoisomerase of the present application can be obtained from NCBI's GenBank, a known database.
- the ketolic acid reductoisomerase may be a protein containing the amino acid sequence of SEQ ID NO: 1, but is not limited thereto.
- the ketolic acid reductoisomerase may be derived from a microorganism of the genus Corynebacterium, for example, it may be derived from Corynebacterium glutamicum.
- Examples include WP_003854117.1, 6JX2_A, HJE10081.1, WP_059289140.1, WP_060564426.1, WP_006286981.1, WP_096455581.1, WP_066565326.1, WP_015651057. 1, WP_053544709.1, WP_006769331.1, BAC18177.1, WP_156227806. 1, WP_191733749.1, WP_042621277.1, WP_126119396.1, NLZ56857.1 or WP_015400720.1, but is not limited thereto, and includes without limitation a sequence having the same ketol acid reductoisomerase activity as the amino acid sequence. can do.
- the ketolic acid reductoisomerase of the present application has the amino acid sequence of SEQ ID NO: 1 or 70%, 75%, 80%, 85%, 90%, 95%, 96%, 97%, 98% thereof. It may be a protein containing an amino acid sequence having more than 99% homology or identity. In addition, if it is an amino acid sequence that has such homology or identity and shows efficacy corresponding to the protein, proteins with amino acid sequences in which part of the sequence is deleted, modified, substituted, or added are also included within the scope of the protein that is the subject of mutation in the present application. is self-explanatory.
- ketol acid reductoisomerase which is subject to mutation
- a protein containing the amino acid sequence of SEQ ID NO: 1 but meaningless sequences are added before or after the amino acid sequence of SEQ ID NO: 1 or can occur naturally. Mutation or its silent mutation is not excluded, and if it has the same or corresponding activity as the protein consisting of the amino acid sequence of SEQ ID NO: 1, it applies to the ketolic acid reductoisomerase of the present application. It is obvious to those skilled in the art.
- homology refers to the degree of similarity between two given amino acid sequences or base sequences and can be expressed as a percentage.
- homology and identity can often be used interchangeably.
- sequence homology or identity of a conserved polynucleotide or polypeptide is determined by standard alignment algorithms, and may be used with a default gap penalty established by the program used. Substantially homologous or identical sequences are generally capable of hybridizing to all or part of a sequence under moderate or high stringent conditions. It is obvious that hybridization also includes hybridization with a polynucleotide containing a common codon or a codon taking codon degeneracy into account.
- Whether any two polynucleotide or polypeptide sequences have homology, similarity, or identity can be determined, for example, by Pearson et al (1988) [Proc. Natl. Acad. Sci. USA 85]: It can be determined using a known computer algorithm such as the "FASTA” program using default parameters as in 2444. Or, as performed in the Needleman program in the EMBOSS package (EMBOSS: The European Molecular Biology Open Software Suite, Rice et al., 2000, Trends Genet. 16: 276-277) (version 5.0.0 or later), It can be determined using the Needleman-Wunsch algorithm (Needleman and Wunsch, 1970, J. Mol. Biol.
- a GAP program can be defined as the total number of symbols in the shorter of the two sequences divided by the number of similarly aligned symbols (i.e., nucleotides or amino acids).
- the default parameters for the GAP program are (1) the unitary comparison matrix (containing values 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) permutation 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 and a gap extension penalty of 0.5); and (3) no penalty for end gaps. Accordingly, the term “homology” or “identity” used in this application refers to the relationship between sequences.
- variants or modified polypeptide refers to a sequence in which one or more amino acids are modified by conservative substitution and/or modification of the recited sequence. ), but refers to a protein that maintains the functions or properties of the protein.
- the variant differs from the identified sequence by several amino acid substitutions, deletions, or additions.
- Such variants can generally be identified by modifying one or more amino acids in the amino acid sequence of the protein and evaluating the properties of the modified protein. In other words, the ability of the variant may be increased, unchanged, or decreased compared to the native protein.
- some variants may include variant polypeptides in which one or more parts, such as the N-terminal leader sequence or transmembrane domain, have been removed.
- Other variants may include variants in which a portion is removed from the N- and/or C-terminus of the mature protein.
- the term "variant” or “variant polypeptide” may be used interchangeably with terms such as variant, modification, mutated protein, mutation, etc. (English expressions include modification, modified protein, mutant, mutein, divergent, variant, etc.). , if the term is used in a modified sense, it is not limited thereto.
- conservative substitution means replacing one amino acid with another amino acid having similar structural and/or chemical properties. Typically, conservative substitutions may have little or no effect on the activity of the resulting polypeptide.
- the variant may have, for example, one or more conservative substitutions while still retaining one or more biological activities.
- conservative substitutions may generally occur based on similarities in the polarity, charge, solubility, hydrophobicity, hydrophilicity, and/or amphipathic nature of the residues.
- Examples of this classification include positively charged (basic) amino acids: arginine, lysine, and histidine; Negatively charged (acidic) amino acids include glutamic acid and aspartate; Amino acids with nonpolar side chains (nonpolar amino acids) include glycine, alanine, valine, leucine, isoleucine, methionine, phenylalanine, tryptophan, and proline; Amino acids with polar or hydrophilic side chains (polar amino acids) can be classified into serine, threonine, cysteine, tyrosine, asparagine, and glutamine.
- arginine, lysine, histidine, glutamic acid, and aspartate are amino acids that have electrically charged side chains (electrically charged amino acids), and amino acids that have uncharged side chains (also referred to as neutral amino acids). It can be classified into glycine, alanine, valine, leucine, isoleucine, methionine, phenylalanine, tryptophan, proline, serine, threonine, cysteine, tyrosine, asparagine and glutamine. As another example, phenylalanine, tryptophan, and tyrosine can be classified as aromatic amino acids.
- valine, leucine, and isoleucine can be classified as branched amino acids.
- 20 types of amino acids are classified according to size, starting from the amino acid group with relatively small volume; glycine, alanine, serine; Cysteine, proline, threonine, aspartate, asparagine; Valine, histidine, glutamic acid, glutamine; Isoleucine, leucine, methionine, lysine, arginine; and phenylalanine, tryptophan, and tyrosine.
- variants may include deletions or additions of amino acids that have minimal effect on the properties and secondary structure of the polypeptide.
- the polypeptide can be conjugated with a signal (or leader) sequence at the N-terminus of the protein that is involved in the transfer of the protein co-translationally or post-translationally.
- the polypeptide may also be conjugated with other sequences or linkers to enable identification, purification, or synthesis of the polypeptide.
- the variant of the present application is a ketolic acid reductoisomerase in which the amino acid corresponding to the 87th position from the N-terminus of SEQ ID NO: 1, among the above-described ketolic acid reductoisomerases, is substituted with a different amino acid. It may be a variant or variant polypeptide having ketolic acid reductoisomerase activity.
- the variant may be capable of increasing L-valine production compared to the unmutated protein, wild-type protein, native polypeptide, or unmodified polypeptide.
- 'substitution with another amino acid' is not limited as long as it is an amino acid that is different from the amino acid before substitution. Meanwhile, in the present application, when it is expressed that 'a specific amino acid is substituted', it is obvious that it is substituted with an amino acid different from the amino acid before substitution, even if it is not separately indicated that it has been substituted with a different amino acid.
- the “other amino acid” may be an amino acid other than glutamine (Q).
- the other amino acids are selected from glycine, alanine, valine, leucine, isoleucine, methionine, phenylalanine, tryptophan, proline, serine, threonine, cysteine, tyrosine, asparagine, aspartate, glutamic acid, lysine, arginine, and histidine. It may be possible.
- the variant is a ketole acid reductoisomerase in which the amino acid corresponding to position 87 in the amino acid sequence of SEQ ID NO: 1 is substituted with valine (V) or aspartate (D). It may be a variant.
- N position in the present application may include the N position and an amino acid position corresponding to the N position.
- a specific amino acid sequence may include an amino acid position corresponding to any amino acid residue in the disclosed mature polypeptide.
- the specific amino acid sequence may be the amino acid sequence of SEQ ID NO: 1.
- corresponding to refers to an amino acid residue at a recited position in a polypeptide, or to an amino acid residue that is similar, identical, or homologous to a recited residue in a polypeptide. Identifying the amino acid at the corresponding position may be determining the specific amino acid in the sequence that refers to the specific sequence.
- corresponding region generally refers to a similar or corresponding position in a related or reference protein.
- specific numbering may be used for amino acid residue positions within the proteins used in this application. For example, by aligning the polypeptide sequence of the target protein to be compared with the protein of the present application, it is possible to renumber the positions corresponding to the amino acid residue positions of the protein of the present application.
- an arbitrary amino acid sequence can be aligned with SEQ ID NO: 1, and based on this, each amino acid residue in the amino acid sequence can be numbered with reference to the numerical position of the amino acid residue corresponding to the amino acid residue in SEQ ID NO: 1.
- sequence alignment algorithms such as those described in this application can identify the positions of amino acids or where modifications such as substitutions, insertions, or deletions occur compared to a query sequence (also referred to as a “reference sequence”).
- Such alignments include, for example, the Needleman-Wunsch algorithm (Needleman and Wunsch, 1970, J. Mol. Biol. 48: 443-453), the Needleman program in the EMBOSS package (EMBOSS: The European Molecular Biology Open Software Suite, Rice et al. , 2000), Trends Genet. 16: 276-277), etc. may be used, but are not limited thereto, and sequence alignment programs and pairwise sequence comparison algorithms known in the art may be appropriately used.
- the ketolic acid reductoisomerase variant of the present application has the amino acid corresponding to the 87th position of SEQ ID NO: 1 substituted with valine (V) or aspartate (D), and is at least 70% identical to SEQ ID NO: 1. , may be a variant containing a sequence having at least 75%, 80%, 85%, 90%, 95%, 96%, 97%, 98%, or 99% homology or identity.
- the ketolic acid reductoisomerase variant may be a variant having less than 100% homology or identity with SEQ ID NO: 1.
- the ketolic acid reductoisomerase variant of the present application has the amino acid corresponding to the 87th position of SEQ ID NO: 1 substituted with valine (V) or aspartate (D), Has at least 70%, 75%, 80%, 85%, 90%, 95%, 96%, 97%, 98%, or 99% homology or identity with SEQ ID NO: 1, and ketol acid reductoisomerase It may be a polypeptide with activity.
- the ketolic acid reductoisomerase variant of the present application has the amino acid corresponding to the 87th position of SEQ ID NO: 1 being valine (V) or aspartate (D), and SEQ ID NO: 1 and has at least 70%, 75%, 80%, 85%, 90%, 95%, 96%, 97%, 98%, or 99% homology or identity and has ketolic acid reductoisomerase activity. It may be a polypeptide.
- the variant of the present application has, comprises, or consists essentially of the amino acid sequence set forth in SEQ ID NO: 3 or SEQ ID NO: 25 ( (essentially consisting of), can be made.
- the variant of the present application is at least 80%, 90%, 95%, 96%, 97%, 98%, 99% or more homologous to SEQ ID NO: 3 or SEQ ID NO: 25. It may contain a sequence having identity or may be composed of the above amino acid sequence.
- the amino acid corresponding to position 87 of SEQ ID NO: 3 or 25 may be valine (V) or aspartate (D).
- the ketol acid reductoisomerase variant of the present application may have enhanced ketol acid reductoisomerase activity, but is not limited thereto.
- the ketol acid reductoisomerase variant of the present application has an increased L-valine production ability compared to a wild-type, native or unmodified polypeptide having ketol acid reductoisomerase activity. It may have an activity that makes it possible, but is not limited thereto.
- Another aspect of the present application provides a polynucleotide encoding a variant of the present application.
- the variant is the same as described in the other aspects above.
- polynucleotide refers to a DNA or RNA strand of a certain length or more, which is a polymer of nucleotides in which nucleotide monomers are connected in a long chain by covalent bonds, and more specifically, encoding the variant. refers to a polynucleotide fragment.
- the polynucleotide of the present application has various variations in the coding region within the range of not changing the amino acid sequence of the variant of the present application, taking into account codon degeneracy or preferred codons in organisms intended to express the variant of the present application. Transformations can occur. Therefore, it is clear that a polynucleotide that can be translated into a polypeptide consisting of the amino acid sequence of the variant of the present application or a polypeptide having homology or identity thereto due to codon degeneracy may also be included.
- the polynucleotide of the present application has at least 70%, 75%, 80%, 85%, 90%, 95%, 96%, 97%, 98% homology or identity with the polynucleotide sequence of SEQ ID NO: 66. , or has or includes a base sequence that is more than 99% and less than 100%, or has at least 70%, 75%, 80%, 85%, 90%, 95%, 96% homology or identity with the sequence of SEQ ID NO: 2. , may consist of or consist essentially of 97%, 98%, or 99% or more of the base sequence, but is not limited thereto.
- the codon encoding the amino acid corresponding to the 87th position of SEQ ID NO: 1 may be one of the codons encoding valine (V) or aspartate (D). , but is not limited to this.
- the polynucleotide of the present application includes, without limitation, any probe that can be prepared from a known genetic sequence, for example, a sequence that can hybridize under stringent conditions with a complementary sequence to all or part of the polynucleotide sequence of the present application. You can.
- the “stringent condition” refers to conditions that enable specific hybridization between polynucleotides. These conditions are described in J. Sambrook et al., Molecular Cloning, A Laboratory Manual, 2nd Edition, Cold Spring Harbor Laboratory press, Cold Spring Harbor, New York, 1989; F.M. Ausubel et al., Current Protocols in Molecular Biology, John Wiley & Sons, Inc., New York, 9.50-9.51, 11.7-11.8).
- polynucleotides with high homology or identity 70% or more, 75% or more, 80% or more, 85% or more, 90% or more, 95% or more, 96% or more, 97% or more, 98% or more, Or, conditions in which polynucleotides with 99% or more homology or identity hybridize with each other and polynucleotides with lower homology or identity do not hybridize with each other, or 60°C, which is the washing condition of normal southern hybridization, Washing once, specifically 2 to 3 times, at a salt concentration and temperature equivalent to 1 ⁇ SSC, 0.1% SDS, specifically 60°C, 0.1 ⁇ SSC, 0.1% SDS, more specifically 68°C, 0.1 ⁇ SSC, 0.1% SDS. Conditions can be listed.
- Hybridization requires that two nucleic acids have complementary sequences, although mismatches between bases may be possible depending on the stringency of hybridization.
- the term “complementary” is used to describe the relationship between nucleotide bases that are capable of hybridizing to each other. For example, with respect to DNA, adenine is complementary to thymine and cytosine is complementary to guanine. Accordingly, the polynucleotides of the present application may also include substantially similar nucleic acid sequences as well as isolated nucleic acid fragments that are complementary to the entire sequence.
- polynucleotides having homology or identity with the polynucleotide of the present application can be detected using hybridization conditions including a hybridization step at a Tm value of 55°C and using the conditions described above. Additionally, the Tm value may be 60°C, 63°C, or 65°C, but is not limited thereto and may be appropriately adjusted by a person skilled in the art depending on the purpose.
- the appropriate stringency to hybridize the polynucleotide depends on the length of the polynucleotide and the degree of complementarity, variables that are well known in the art (e.g., J. Sambrook et al., supra).
- Another aspect of the present application provides a vector containing a polynucleotide encoding the variant of the present application.
- the variants and polynucleotides are the same as described in the other aspects above.
- the vector may be an expression vector for expressing the polynucleotide in a microorganism, but is not limited thereto.
- the term "vector” refers to a DNA product containing the base sequence of a polynucleotide encoding the target polypeptide operably linked to a suitable expression control region (or expression control sequence) to enable expression of the target polypeptide in a suitable host.
- the expression control region 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 termination of transcription and translation.
- the vector After transformation into a suitable microorganism, the vector can replicate or function independently of the host genome and can be integrated into the genome itself.
- the vector used in this application is not particularly limited, and any vector known in the art can be used.
- Examples of commonly used vectors include plasmids, cosmids, viruses, and bacteriophages in a natural or recombinant state.
- pWE15, M13, MBL3, MBL4, IXII, ASHII, APII, t10, t11, Charon4A, and Charon21A can be used as phage vectors or cosmid vectors, and pDZ-based, pBR-based, and pUC-based plasmid vectors can be used.
- pBluescriptII series, pGEM series, pTZ series, pCL series, and pET series can be used.
- pDZ pDZ, pDC, pDCM2, pACYC177, pACYC184, pCL, pECCG117, pUC19, pBR322, pMW118, pCC1BAC vectors, etc.
- pDC pDC
- pDCM2 pACYC177
- pACYC184 pCL
- pECCG117 pUC19
- pBR322 pMW118
- pCC1BAC vectors etc.
- a polynucleotide encoding a target polypeptide can be inserted into a chromosome using a vector for intracellular chromosome insertion. Insertion of the polynucleotide into the chromosome may be accomplished by any method known in the art, for example, homologous recombination, but is not limited thereto.
- a selection marker may be additionally included to confirm whether the chromosome has been inserted. The selection marker is used to select cells transformed with a vector, that is, to confirm the insertion of the target nucleic acid molecule, and to display selectable phenotypes such as drug resistance, auxotrophy, resistance to cytotoxic agents, or expression of surface polypeptides. Markers that provide may be used. In an environment treated with a selective agent, only cells expressing the selection marker survive or show other expression traits, so transformed cells can be selected.
- the term “transformation” refers to introducing a vector containing a polynucleotide encoding a target polypeptide into a microorganism or microorganism so that the polypeptide encoded by the polynucleotide can be expressed within the microorganism.
- the transformed polynucleotide can include both of these, regardless of whether they are inserted into the chromosome of the microorganism or located outside the chromosome.
- the polynucleotide includes DNA and/or RNA encoding the polypeptide of interest.
- the polynucleotide may be introduced in any form as long as it can be introduced and expressed into a microorganism.
- the polynucleotide can be introduced into a microorganism in the form of an expression cassette, which is a genetic structure containing all elements necessary for self-expression.
- the expression cassette may typically include a promoter, a transcription termination signal, a ribosome binding site, and a translation termination signal that are operably linked to the polynucleotide.
- the expression cassette may be in the form of an expression vector capable of self-replication.
- the polynucleotide may be introduced into a microorganism in its own form and operably linked to a sequence required for expression in the microorganism, but is not limited thereto.
- operably linked means that the polynucleotide sequence is functionally linked to a promoter sequence that initiates and mediates transcription of the polynucleotide encoding the target variant of the present application.
- introduction refers to a method of delivering a polynucleotide encoding the variant of the present application or a vector containing the same to a host cell. Such introduction can be easily performed according to conventional methods in the art.
- the CaCl 2 precipitation method the Hanahan method that increases efficiency by using a reducing substance called DMSO (dimethyl sulfoxide) in the CaCl 2 method
- electroporation calcium phosphate precipitation
- protoplasm fusion method and stirring using silicon carbide fibers methods
- transformation methods using PEG, dextran sulfate, lipofectamine, and desiccation/inhibition-mediated transformation methods is not limited to the above examples, and transformation or transfection methods commonly used in the art can be used without limitation.
- Another aspect of the present application provides a microorganism comprising the ketol acid reductoisomerase variant of the present application or a polynucleotide encoding the variant.
- the microorganism may contain a vector containing a polynucleotide encoding the variant.
- the microorganism of the present application may be a microorganism having the ability to produce L-valine.
- L-valine refers to an L-amino acid with the formula (CH 3 ) 2 CHCH(NH 2 )COOH, which is one of the essential amino acids and structurally corresponds to a branched chain amino acid along with L-leucine and L-isoleucine. do.
- microorganism includes both wild-type microorganisms and microorganisms that have undergone natural or artificial genetic modification, and can be caused by insertion of foreign genes or enhanced or inactivated activity of intrinsic genes. It is a microorganism whose specific mechanism is weakened or strengthened, and may be a microorganism that includes genetic modification for the production of a desired polypeptide, protein, or product.
- strain and “microorganism” have the same meaning and can be used interchangeably without limitation.
- microorganism that produces L-valine refers to a prokaryotic or eukaryotic microbial strain capable of producing L-valine in a living organism, a microorganism in which the ability to produce L-valine is imparted to the parent strain that does not have the ability to produce L-valine. , or may include all microorganisms that inherently have the ability to produce L-valine. L-valine production capacity can be conferred or enhanced by species improvement.
- the microorganism of the present application is a microorganism that naturally has the ability to produce ketol acid reductoisomerase or L-valine; Or, the variant of the present application or a polynucleotide (or a vector containing the polynucleotide) encoding the same is introduced into the parent strain that does not have the ability to produce ketol acid reductoisomerase or L-valine, and/or the ability to produce L-valine is imparted. It may be a microorganism, but is not limited thereto.
- the microorganism of the present application is a microorganism in which the gene on the chromosome encoding ketol acid reductoisomerase is mutated and contains the ketol acid reductoisomerase variant sequence of the present application and/or the ketol acid of the present application.
- the microorganism provided in the present application may be a microorganism genetically modified to express the ketolic acid reductoisomerase of the present application.
- non-modified microorganism does not exclude strains containing mutations that may occur naturally in microorganisms, and is either a wild-type strain or a natural strain itself, or a strain that has a genetic mutation caused by natural or artificial factors. It may refer to the strain before change.
- the unmodified microorganism may refer to a strain in which the ketol acid reductoisomerase variant described herein is not introduced or before it is introduced.
- the “non-modified microorganism” may be used interchangeably with “pre-transformed strain”, “pre-transformed microorganism”, “non-mutated strain”, “non-modified strain”, “non-mutated microorganism” or “reference microorganism”.
- Microorganisms having the ability to produce L-valine of the present application include microorganisms containing at least one of the variants of the present application, the polynucleotide of the present application, and the vector containing the polynucleotide of the present application; Microorganisms modified to express variants of the present application or polynucleotides of the present application; Microorganisms (e.g., recombinant strains) expressing variants of the present application, or polynucleotides of the present application; Or it may be a microorganism (e.g., a recombinant strain) having variant activity of the present application, but is not limited thereto.
- the strain of the present application is a cell or microorganism that is transformed with a vector containing a polynucleotide encoding the polynucleotide of the present application or the variant of the present application and expresses the variant of the present application, and the strain of the present application is the polynucleotide of the present application. It may include all microorganisms capable of producing L-valine, including variants in the application.
- the microorganism of the present application is a natural wild-type microorganism or a microorganism with the ability to produce L-valine, by introducing a polynucleotide encoding the variant of the present application, thereby expressing a ketolic acid reductoisomerase variant, thereby producing L-valine. It may be a recombinant strain with increased production capacity.
- the strain with increased L-valine production ability is a natural wild-type microorganism or a non-modified ketol acid reductoisomerase microorganism (e.g., a microorganism expressing wild-type ketol acid reductoisomerase or a variant of the present application) It may be a microorganism with an increased L-valine production ability compared to a microorganism that does not, but is not limited thereto.
- the microorganism with increased L-valine production ability of the present application may be a microorganism with increased L-valine production ability compared to a microorganism containing the polypeptide of SEQ ID NO: 1 or a polynucleotide encoding the same, but is limited thereto. That is not the case.
- the microorganism with an increased L-valine production ability is about 1% or more, about 2% or more, about 2.5% or more, and about 3% or more (the upper limit is There is no particular limitation, for example, about 200% or less, about 150% or less, about 100% or less, about 50% or less, about 45% or less, about 40% or less, about 35% or less, about 30% or less, about 25% or less. Hereinafter, it may be about 20% or less), but it is not limited thereto as long as it has a positive increase compared to the production capacity of the parent strain or unmodified microorganism before mutation.
- the recombinant strain with increased L-valine production ability has an L-valine production ability of about 1.01 times more, about 1.02 times more, and about 1.03 times more than the parent strain or unmodified microorganism before mutation (the upper limit is a special limitation) There is no, for example, it may be about 10 times or less, about 5 times or less, about 3 times or less, about 2 times or less, about 1.5 times or less) may be increased, but is not limited thereto.
- Examples of the parent strain or unmodified microorganism before mutation for comparing the increase in L-valine production ability include a microorganism containing the polypeptide of SEQ ID NO: 1 or a polynucleotide encoding the same, and other examples include Corynebacterium Examples include, but are not limited to, E. glutamicum KCCM11201P (US 8465962 B), Corynebacterium glutamicum ATCC13869, and Corynebacterium glutamicum ATCC14067.
- the microorganism of the present application may include all microorganisms capable of expressing the ketolic acid reductoisomerase variant of the present application by various known methods in addition to the nucleic acid or vector introduction.
- the microorganism of the present application may be a microorganism of the genus Corynebacterium.
- the microorganism of the present application is Corynebacterium glutamicum, Corynebacterium crudilactis , Corynebacterium deserti , Corynebacterium Corynebacterium efficiens , Corynebacterium callunae, Corynebacterium stationis , Corynebacterium singulare , Corynebacterium halotolerans ( Corynebacterium halotolerans ), Corynebacterium striatum, Corynebacterium ammoniagenes, Corynebacterium pollutisoli , Corynebacterium imitans , It may be Corynebacterium testudinoris or Corynebacterium flavescens . In any one of the foregoing embodiments, the microorganism of the present application may be Corynebacterium glutamicum .
- Microorganisms of the Corynebacterium genus having the ability to produce L-valine in the present application include natural wild-type microorganisms themselves; Microorganisms of the genus Corynebacterium that have improved L-valine production ability by strengthening or weakening the activity of genes related to the L-valine production mechanism; Alternatively, it includes all microorganisms of the genus Corynebacterium that have improved L-valine production ability by introducing or enhancing the activity of foreign genes.
- the microorganism of the present application may include acetohydroxy acid synthase modified to have enhanced L-valine production ability.
- the microorganism of the present application may include a modified acetohydroxy acid synthase subunit (ilvN).
- the acetohydroxy acid synthase subunit may include a mutation in which amino acid number 42 is substituted with valine (A42V). However, it is not limited to this.
- Microorganisms of the present application may have enhanced activity of ketolic acid reductoisomerase variants of the present application.
- the term “enhancement” of polypeptide activity means that the activity of the polypeptide is increased compared to the intrinsic activity.
- the enhancement may be used interchangeably with terms such as activation, up-regulation, overexpression, and increase.
- activation, enhancement, upregulation, overexpression, and increase may include showing an activity that it did not originally have, or showing improved activity compared to the intrinsic activity or activity before modification.
- intrinsic activity refers to the activity of a specific polypeptide originally possessed by the parent strain or unmodified microorganism before the change in trait when the trait changes due to genetic mutation due to natural or artificial factors.
- “Enhanced,” “upregulated,” “overexpressed,” or “increased” in the activity of a polypeptide compared to its intrinsic activity means the activity and/or concentration (expression) of a specific polypeptide originally possessed by the parent strain or unmodified microorganism before the transformation. It means an improvement compared to the amount).
- the enhancement can be achieved by introducing an exogenous polypeptide or enhancing the activity and/or concentration (expression amount) of the endogenous polypeptide. Whether the activity of the polypeptide is enhanced can be confirmed by increasing the activity level of the polypeptide, the expression level, or the amount of product released from the polypeptide.
- Enhancement of the activity of the polypeptide can be done by applying various methods well known in the art, and is not limited as long as the activity of the target polypeptide can be enhanced compared to that of the microorganism before modification.
- genetic engineering and/or protein engineering well known to those skilled in the art, which are routine methods of molecular biology, may be used, but are not limited thereto (e.g., Sitnicka et al. Functional Analysis of Genes. Advances in Cell Biology. 2010, Vol. 2. 1-16, Sambrook et al. Molecular Cloning 2012, etc.).
- the reinforcement of the polypeptide of the present application is
- modification of the polynucleotide sequence encoding the polypeptide to enhance the activity of the polypeptide e.g., modification of the polynucleotide sequence of the polypeptide gene to encode a polypeptide modified to enhance the activity of the polypeptide;
- the increase in the intracellular copy number of the polynucleotide encoding the polypeptide is achieved by the introduction into the host cell of a vector capable of replicating and functioning independently of the host to which the polynucleotide encoding the polypeptide is operably linked. It may be possible. Alternatively, this may be achieved by introducing one or two or more copies of the polynucleotide encoding the polypeptide into the chromosome of the host cell.
- the introduction into the chromosome may be performed by introducing a vector capable of inserting the polynucleotide into the chromosome of the host cell into the host cell, but is not limited to this.
- the vector is the same as described above.
- the expression control region is not particularly limited thereto, but may include a promoter, an operator sequence, a sequence encoding a ribosome binding site, and a sequence that regulates the termination of transcription and translation.
- the original promoter may be replaced with a strong promoter, but the method is not limited thereto.
- Examples of known strong promoters include CJ1 to CJ7 promoters (US Patent US 7662943 B2), lac promoter, trp promoter, trc promoter, tac promoter, lambda phage PR promoter, PL promoter, tet promoter, gapA promoter, SPL7 promoter, SPL13. (sm3) promoter (US Patent US 10584338 B2), O2 promoter (US Patent US 10273491 B2), tkt promoter, yccA promoter, etc., but is not limited thereto.
- the base sequence modification encoding the start codon or 5'-UTR region of the gene transcript encoding the polypeptide is, for example, a base sequence encoding another start codon with a higher polypeptide expression rate than the internal start codon. It may be a substitution, but is not limited thereto.
- the modification of the amino acid sequence or polynucleotide sequence of 4) and 5) includes deletion, insertion, non-conservative or conservative substitution of the amino acid sequence of the polypeptide or the polynucleotide sequence encoding the polypeptide to enhance the activity of the polypeptide.
- the combination of these may result in a mutation in the sequence, or a replacement with an amino acid sequence or polynucleotide sequence improved to have stronger activity, or an amino acid sequence or polynucleotide sequence improved to increase activity, but is not limited thereto.
- the replacement may be specifically performed by inserting a polynucleotide into a chromosome by homologous recombination, but is not limited thereto.
- the vector used at this time may additionally include a selection marker to check whether chromosome insertion has occurred. The selection marker is as described above.
- Introduction of a foreign polynucleotide showing the activity of the polypeptide may be introduction into the host cell of a foreign polynucleotide encoding a polypeptide showing the same/similar activity as the polypeptide. There are no restrictions on the origin or sequence of the foreign polynucleotide as long as it exhibits the same/similar activity as the polypeptide.
- the method used for the introduction can be performed by appropriately selecting a known transformation method by a person skilled in the art, and by expressing the introduced polynucleotide in the host cell, a polypeptide can be produced and its activity can be increased.
- Codon optimization of the polynucleotide encoding the polypeptide is codon optimization of the native polynucleotide to increase transcription or translation within the host cell, or optimized transcription and translation of the foreign polynucleotide within the host cell. It may be that the codons have been optimized to allow this.
- Analyzing the tertiary structure of a polypeptide and selecting exposed sites to modify or chemically modify the sequence information for example, by comparing the sequence information of the polypeptide to be analyzed with a database storing the sequence information of known proteins to determine the degree of sequence similarity. Accordingly, a template protein candidate may be determined, the structure confirmed based on this, and an exposed site to be modified or chemically modified may be selected and modified or modified.
- Such enhancement of polypeptide activity means that the activity or concentration of the corresponding polypeptide is increased based on the activity or concentration of the polypeptide expressed in the wild type or unmodified microbial strain, or the amount of the product produced from the polypeptide is increased. However, it is not limited to this.
- Modification of part or all of the polynucleotide in the microorganism of the present application is (a) homologous recombination using a vector for chromosome insertion into the microorganism or genome editing using engineered nuclease (e.g., CRISPR-Cas9) and/or (b) It may be induced by, but is not limited to, light and/or chemical treatment, such as ultraviolet rays and radiation.
- the method of modifying part or all of the gene may include a method using DNA recombination technology.
- a nucleotide sequence or vector containing a nucleotide sequence homologous to the gene of interest is injected into the microorganism to cause homologous recombination, thereby causing deletion of part or all of the gene.
- the injected nucleotide sequence or vector may include, but is not limited to, a dominant selection marker.
- the variants, polynucleotides, L-valine, etc. are as described in the other embodiments above.
- Another aspect of the present application provides a method for producing L-valine, comprising culturing the microorganism of the present application in a medium.
- the L-valine production method of the present application may include, but is not limited to, the step of culturing a microorganism containing the variant of the present application, the polynucleotide of the present application, or the vector of the present application in a medium.
- the term “culturing” means growing the microorganism of this application under appropriately controlled environmental conditions.
- the culture process of the present application can be carried out according to appropriate media and culture conditions known in the art. This culture process can be easily adjusted and used by a person skilled in the art depending on the strain selected. Specifically, the culture may be batch, continuous, and/or fed-batch, but is not limited thereto.
- the term "medium” refers to a material that is mainly mixed with nutrients necessary for cultivating the microorganisms of this application, and supplies nutrients and growth factors, including water, which are essential for survival and development.
- the medium and other culture conditions used for cultivating the microorganisms of the present application can be any medium used for cultivating ordinary microorganisms without particular restrictions, but the microorganisms of the present application can be grown with an appropriate carbon source, nitrogen source, personnel, and inorganic substances. It can be cultured under aerobic conditions in a typical medium containing compounds, amino acids, and/or vitamins, while controlling temperature, pH, etc.
- culture media for strains of the genus Corynebacterium can be found in the literature ["Manual of Methods for General Bacteriology” by the American Society for Bacteriology (Washington D.C., USA, 1981)].
- the carbon source includes carbohydrates such as glucose, saccharose, lactose, fructose, sucrose, maltose, etc.; Sugar alcohols such as mannitol, sorbitol, etc., organic acids such as pyruvic acid, lactic acid, citric acid, etc.; Amino acids such as glutamic acid, methionine, lysine, etc. may be included.
- natural organic nutrient sources such as starch hydrolyzate, molasses, blackstrap molasses, rice bran, cassava, bagasse and corn steep liquor can be used, specifically glucose and sterilized pre-treated molasses (i.e. converted to reducing sugars).
- Carbohydrates such as molasses
- various other carbon sources in an appropriate amount can be used without limitation. These carbon sources may be used alone or in combination of two or more types, but are not limited thereto.
- the nitrogen source includes inorganic nitrogen sources such as ammonia, ammonium sulfate, ammonium chloride, ammonium acetate, ammonium phosphate, anmonium carbonate, and ammonium nitrate; Organic nitrogen sources such as amino acids such as glutamic acid, methionine, and glutamine, peptone, NZ-amine, meat extract, yeast extract, malt extract, corn steep liquor, casein hydrolyzate, fish or its decomposition products, defatted soybean cake or its decomposition products, etc. can be used These nitrogen sources may be used individually or in combination of two or more types, but are not limited thereto.
- inorganic nitrogen sources such as ammonia, ammonium sulfate, ammonium chloride, ammonium acetate, ammonium phosphate, anmonium carbonate, and ammonium nitrate
- Organic nitrogen sources such as amino acids such as glutamic acid, methionine, and glutamine, peptone, NZ-amine, meat extract, yeast
- the agent may include monopotassium phosphate, dipotassium phosphate, or a corresponding sodium-containing salt.
- Inorganic compounds may include sodium chloride, calcium chloride, iron chloride, magnesium sulfate, iron sulfate, manganese sulfate, and calcium carbonate, and may also include amino acids, vitamins, and/or appropriate precursors. These components or precursors can be added to the medium batchwise or continuously. However, it is not limited to this.
- compounds such as ammonium hydroxide, potassium hydroxide, ammonia, phosphoric acid, sulfuric acid, etc. can be added to the medium in an appropriate manner to adjust the pH of the medium.
- foam generation can be suppressed by using an antifoaming agent such as fatty acid polyglycol ester.
- oxygen or oxygen-containing gas can be injected into the medium, or to maintain the anaerobic and microaerobic state, nitrogen, hydrogen, or carbon dioxide gas can be injected without gas injection, and is limited thereto. That is not the case.
- the culture temperature can be maintained at 20 to 45°C, specifically 25 to 40°C, and culture can be performed for about 10 to 160 hours, but is not limited thereto.
- L-valine produced by the culture of the present application may be secreted into the medium or remain within the cell.
- the L-valine production method of the present application includes preparing the microorganism of the present application, preparing a medium for culturing the strain, or a combination thereof (in any order), for example, It may be additionally included before the culturing step.
- the L-valine production method of the present application may further include the step of recovering L-valine from the culture medium (medium in which the culture was performed) or the microorganism of the present application.
- the recovering step may be additionally included after the culturing step.
- the recovery may be to collect L-valine using a suitable method known in the art according to the microorganism culture method of the present application, such as a batch, continuous, or fed-batch culture method.
- a suitable method known in the art such as a batch, continuous, or fed-batch culture method.
- Various chromatography such as chromatography, HPLC, or a combination of these methods can be used, and L-valine can be recovered from the medium or microorganism using a suitable method known in the art.
- the L-valine production method of the present application may additionally include a purification step.
- the purification can be performed using a suitable method known in the art.
- the recovery step and the purification step are performed sequentially or discontinuously regardless of the order, simultaneously, or integrated into one step. may be performed, but is not limited thereto.
- the variants, polynucleotides, microorganisms, L-valine, etc. are as described in the other embodiments above.
- Another aspect of the present application is a microorganism comprising a ketol acid reductoisomerase variant of the present application or a polynucleotide encoding the variant; The medium in which it was cultured; Alternatively, a composition for producing L-valine comprising a combination of two or more of these is provided.
- composition of the present application may further include any suitable excipients commonly used in compositions for producing amino acids, and such excipients may be, for example, preservatives, wetting agents, dispersants, suspending agents, buffers, stabilizers, or isotonic agents. However, it is not limited to this.
- composition of the present application the variants, polynucleotides, microorganisms, L-valine, etc. are as described in the other embodiments above.
- Another aspect of the present application is to provide a use of the ketol acid reductoisomerase variant of the present application for producing L-valine.
- the above variants are as described above.
- Example 1-1 Artificial mutagenesis through UV irradiation
- Corynebacterium glutamicum KCCM11201P (US 8465962 B), a valine producing strain, was plated on a nutrient medium containing agar and cultured at 30 o C for 36 hours. Hundreds of colonies obtained in this way were irradiated with UV light at room temperature to induce random mutations in the genome of the strain.
- Example 1-2 Mutagenic strain fermentation titer evaluation and strain selection
- the C12 strain with the highest increase in valine production was selected compared to the control strain KCCM11201P.
- the major genes of the strain were sequenced and compared with the KCCM11201P strain and the Corynebacterium glutamicum ATCC14067 wild type strain. As a result, it was confirmed that the strain with increased valine production ability contained a base sequence mutation at a specific position in the ORF (open reading frame) region of the ilvC gene. Specifically, the C12 strain with the greatest increase in valine production had three mutations introduced into the nucleotide sequence located 259 to 261 bp downstream from the start codon of the ilvC gene, changing the existing CAG (SEQ ID NO: 66) to GTT (SEQ ID NO: 2). , it was confirmed that the 87th amino acid glutamine was substituted with valine (SEQ ID NO: 3).
- valine a branched chain amino acid
- Example 3-1 Construction of a strain introducing the ilvC mutation in Corynebacterium glutamicum KCCM11201P strain and evaluation of L-valine production ability
- a vector containing the target mutation was constructed. Specifically, the genomic DNA of the C12 strain was extracted using the G-spin Total DNA Extraction Mini Kit (Intron, Cat. No 17045) according to the protocol provided in the kit, and the genomic DNA was used as a template. PCR was performed.
- the conditions for PCR were denaturation at 94°C for 5 minutes; After 25 cycles of denaturation at 94°C for 30 seconds, annealing at 55°C for 30 seconds, and polymerization at 72°C for 150 seconds; Polymerization reaction was performed at 72°C for 7 minutes, and a 1010 bp PCR product (hereinafter referred to as “mutation introduction fragment 1”) was obtained using SEQ ID NO: 4 and SEQ ID NO: 5.
- the obtained mutation introduction fragment 1 was processed with the restriction enzyme SmaI (New England Biolabs, Beverly, MA) into pDCM2 vector (Korea Publication No. 10-2020-0136813) and Infusion Cloning Kit (Takara Bio Inc., Otsu, Japan). After ligating using , it was transformed into E. coli DH5 ⁇ . After transforming the above-constructed gene into E. coli DH5 ⁇ , it was selected in LB medium containing kanamycin, and DNA was obtained using a DNA-spin plasmid DNA purification kit (iNtRON) to produce vector pDCM2-ilvC containing the mutation introduction fragment 1. (Q87V) was prepared.
- primer base sequence SEQ ID NO: 4 CCCGGG GCACTGCTTGATGTGATGGATGGAACCAT SEQ ID NO: 5 CCCGGG GTCAACGATGAGCTTGAGCTCGT
- the pDCM2-ilvC(Q87V) was transformed into Corynebacterium glutamicum KCCM11201P by homologous recombination on the chromosome (van der Rest et al., Appl Microbiol Biotechnol 52:541-545, 1999). Strains in which the vector was inserted into the chromosome by recombination of homologous sequences were selected in a medium containing 25 mg/l of kanamycin.
- each strain was inoculated into a 250 ml corner-baffle flask containing 25 ml of production medium, and cultured at 30°C for 72 hours with shaking at 200 rpm. Afterwards, the concentration of L-valine was analyzed using HPLC, and the analyzed concentration of L-valine is shown in Table 3 below.
- KCCM11201P and KCCM11201P :: ilvC (Q87V) L-valine production capacity strain L-Valine (g/L) Batch 1 Batch 2 Batch 3 average KCCM11201P 2.8 2.7 2.8 2.7 KCCM11201P:: ilvC (Q87V) 3.1 3.2 3.3 3.2
- Example 3-2 Construction of a strain into which the ilvC mutation was introduced in Corynebacterium glutamicum CJ7V strain and evaluation of L-valine production ability
- genomic DNA of the Corynebacterium glutamicum wild type strain ATCC14067 was extracted using the G-spin Total DNA Extraction Mini Kit (Intron, Cat. No 17045) according to the protocol provided in the kit. PCR was performed using the genomic DNA as a template.
- gene fragments (A and B) were obtained using the primer pair of SEQ ID NO: 6 and SEQ ID NO: 7 and the primer pair of SEQ ID NO: 8 and SEQ ID NO: 9, respectively.
- the conditions for PCR were denaturation at 94°C for 5 minutes; After 25 cycles of denaturation at 94°C for 30 seconds, annealing at 55°C for 30 seconds, and polymerization at 72°C for 60 seconds; Polymerization was performed at 72°C for 7 minutes.
- the obtained mutation introduction fragment 2 was treated with the restriction enzyme SmaI (New England Biolabs, Beverly, MA), and then ligated using the pDCM2 vector treated with the same restriction enzyme and T4 ligase (New England Biolabs, Beverly, MA). did.
- SmaI New England Biolabs, Beverly, MA
- T4 ligase New England Biolabs, Beverly, MA
- transforming the gene produced above into E. coli DH5 ⁇ it was selected in LB medium containing kanamycin, and DNA was obtained using a DNA-spin plasmid DNA purification kit (iNtRON).
- the vector for the purpose of introducing the A42V mutation of the ilvN gene was named pDCM2-ilvN(A42V).
- the pDCM2-ilvN(A42V) was transformed into wild-type Corynebacterium glutamicum ATCC14067 by homologous recombination on the chromosome (van der Rest et al., Appl Microbiol Biotechnol 52:541-545, 1999). Strains in which the vector was inserted into the chromosome by recombination of homologous sequences were selected in a medium containing 25 mg/l of kanamycin.
- the gene fragment was amplified through PCR using SEQ ID NO: 6 and SEQ ID NO: 9 for the Corynebacterium glutamicum transformant for which secondary recombination was completed, and then the mutant insertion strain was confirmed through gene sequence analysis. .
- the recombinant strain was named Corynebacterium glutamicum CJ7V.
- a strain obtained by transforming the Corynebacterium glutamicum CJ7V with a vector in the same manner as in Example 3-1 was created and named Corynebacterium glutamicum CJ7V:: ilvC (Q87V).
- they were cultured in the same manner as in Example 3-1 above and the concentration of L-valine was analyzed. The analyzed L-valine concentrations are shown in Table 5 below.
- Example 3-3 Construction of a strain into which the ilvC mutation was introduced in Corynebacterium glutamicum CJ8V strain and evaluation of L-valine production ability
- Example 3-2 the constructed vector pDCM2-ilvN(A42V) was transformed into the wild-type Corynebacterium glutamicum ATCC13869 strain to induce homologous recombination on the chromosome (van der Rest et al., Appl Microbiol Biotechnol 52:541-545, 1999).
- Strains in which the vector was inserted into the chromosome by recombination of homologous sequences were selected in a medium containing 25 mg/l of kanamycin.
- the gene fragment was amplified through PCR using a primer pair of SEQ ID NOs: 10 and 11 for the selected Corynebacterium glutamicum transformant, and then it was confirmed that the mutation was properly introduced through gene sequence analysis.
- the recombinant strains were named Corynebacterium glutamicum CJ8V, respectively.
- the sequences of the primers used in this example are listed in Table 6 below.
- primer base sequence SEQ ID NO: 10 CCGCGTCACCAAAGCGGA SEQ ID NO: 11 TTAGATCTTGGCCGGAGCCA
- Example 3-1 a strain obtained by transforming the Corynebacterium glutamicum CJ8V with a vector in the same manner as in Example 3-1 was created and named Corynebacterium glutamicum CJ8V:: ilvC (Q87V).
- Corynebacterium glutamicum CJ8V:: ilvC Q87V.
- the analyzed L-valine concentrations are shown in Table 7 below.
- site-directed mutagenesis was performed using pDCM2-ilvC(Q87V) used in Example 3-1 as a template. Site-directed mutagenesis was performed as follows.
- valine the 87th amino acid of ilvC, glutamine, other amino acids alanine (A) (SEQ ID NO: 12), valine (V) (SEQ ID NO: 3), isoleucine (I) (SEQ ID NO: 13), and glycine (G) (SEQ ID NO: 14) ), phenylalanine (F) (SEQ ID NO: 15), methionine (M) (SEQ ID NO: 16), serine (S) (SEQ ID NO: 17), proline (P) (SEQ ID NO: 18), threonine (T) (SEQ ID NO: Number 19), tyrosine (Y) (SEQ ID NO: 20), histidine (H) (SEQ ID NO: 21), glutamine (Q) (SEQ ID NO: 22), asparagine (N) (SEQ ID NO: 23), lysine (K) ( SEQ ID NO: 24), aspartate (D) (SEQ ID NO: 25), cysteine (C) (
- Mutagenic primer set for producing plasmid with variant 87 amino acid of ilvC amino acid sequence Mutant ilvC plasmid sequence number Sequence (5'-3') pDCM2_ilvC(Q87A) 30 CAGACACCTCCgcgGCAGAAATCTTCACCAAC 31 AAGATTTCTGCCgcGGAGGTGTCTGGAGCCAG pDCM2_ilvC(Q87I) 32 CAGACACCTCCattGCAGAAATCTTCACCAAC 33 AAGATTTCTGCaatGGAGGTGTCTGGAGCCAG pDCM2_ilvC(Q87G) 34 CAGACACCTCCggaGCAGAAATCTTCACCAAC 35 AAGATTTCTGCtccGGAGGTGTCTGGAGCCAG pDCM2_ilvC(Q87F) 36 CAGACACCTCCttcGCAGAAATCTTCACCAAC 37 AAGATTTCTGCgaaGGAGGTGTCTGGAGCCAG pDCM2_il
- KCCM11201P :: ILVC (Q87A), KCCM11201P :: ILVC (Q87I), KCM11201P :: ILVC (Q87G), KCCM11201P :: ILV C (Q87M), KCCM11201P: :ilvC(Q87S), KCCM11201P::ilvC(Q87P), KCCM11201P::ilvC(Q87T), KCCM11201P::ilvC(Q87Y), KCCM11201P::ilvC(Q87H), KCCM11201P::ilvC(Q87Q), KCCM11201 P::ilvC (Q87N), KCCM11201P::ilvC(Q87K), KCCM11201P::ilvC(Q87D), KCCM11201P::ilvC(Q87C), KCCM11201P::ilvC(Q87W), KCCM11201P::ilv
- the L-valine production ability of the KCCM11201P::ilvC(Q87V) strain increased by 16% compared to KCCM11201P, and the L-valine production ability of the KCCM11201P::ilvC(Q87D) strain was also confirmed to increase with KCCM11201P.
- Strains into which other mutations were introduced showed equivalent production capacity to KCCM11201P or had minimal effect.
- the variant of the present application can increase microbial L-valine production.
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Abstract
Description
| 균주명 | L-발린(g/L) | |
| 대조군 | KCCM11201P | 2.9 |
| 실험군 | C1 | 3.0 |
| C2 | 2.5 | |
| C3 | 2.3 | |
| C4 | 2.6 | |
| C5 | 2.3 | |
| C6 | 1.9 | |
| C7 | 1.2 | |
| C8 | 3.8 | |
| C9 | 3.0 | |
| C10 | 3.1 | |
| C11 | 1.8 | |
| C12 | 4.3 | |
| C13 | 3.5 | |
| C14 | 2.9 | |
| C15 | 1.6 | |
| C16 | 2.2 | |
| C17 | 2.7 | |
| C18 | 2.5 | |
| C19 | 2.7 | |
| C20 | 3.4 | |
| C21 | 2.3 |
| 프라이머 | 염기 서열 |
| 서열번호 4 | CCCGGG GCACTGCTTGATGTGATGGAACCAT |
| 서열번호 5 | CCCGGG GTCAACGATGAGCTTGAGCTCGT |
| 균주 | L-발린 (g/L) | |||
| 배치 1 | 배치 2 | 배치 3 | 평균 | |
| KCCM11201P | 2.8 | 2.7 | 2.8 | 2.7 |
| KCCM11201P::ilvC(Q87V) | 3.1 | 3.2 | 3.3 | 3.2 |
| 프라이머 | 염기 서열 |
| 서열번호 6 | cggggatcccccgggAGGACGGTACTCAAATACTAAACTTC |
| 서열번호 7 | TGCCGAGTGTTTCGGTCTTTACAGACACGAGGGACACG |
| 서열번호 8 | TGTCTGTAAAGACCGAAACACTCGGCATCAA |
| 서열번호 9 | cggggatcccccgggGACAACTACATTATTATTATACCACA |
| 균주 | L-발린 (g/L) | |||
| 배치 1 | 배치 2 | 배치 3 | 평균 | |
| CJ7V | 2.2 | 2.1 | 2.2 | 2.2 |
| CJ7V::ilvC(Q87V) | 2.6 | 2.5 | 2.6 | 2.6 |
| 프라이머 | 염기 서열 |
| 서열번호 10 | CCGCGTCACCAAAGCGGA |
| 서열번호 11 | TTAGATCTTGGCCGGAGCCA |
| 균주 | L-발린 (g/L) | |||
| 배치 1 | 배치 2 | 배치 3 | 평균 | |
| CJ8V | 1.9 | 1.8 | 1.9 | 1.9 |
| CJ8V::ilvC(Q87V) | 2.3 | 2.3 | 2.3 | 2.3 |
| 단위 (ul) | |
| 10X pfu-X Buffer | 5 |
| 10mM dNTP Mix | 1 |
| pfu-X Polymerase | 1 |
| Mutagenic forward primer(5pmol) | 2 |
| Mutagenic reverse primer(5pmol) | 2 |
| pDCM2-ilvC(Q87V) (template DNA, 200ng/ul) | 1 |
| dH2O | 38 |
| Total | 50 |
| Cycle | Temperature | Time |
| 1 | 95 ℃ | 1 min |
| 18 | 95 ℃ | 50 sec |
| 60 ℃ | 50 sec | |
| 68 ℃ | 9 min | |
| 1 | 68 ℃ | 7 min |
| 변이형 ilvC 플라스미드 | 서열번호 | 서열(5'-3') |
| pDCM2_ilvC(Q87A) | 30 | CAGACACCTCCgcgGCAGAAATCTTCACCAAC |
| 31 | AAGATTTCTGCcgcGGAGGTGTCTGGAGCCAG | |
| pDCM2_ilvC(Q87I) | 32 | CAGACACCTCCattGCAGAAATCTTCACCAAC |
| 33 | AAGATTTCTGCaatGGAGGTGTCTGGAGCCAG | |
| pDCM2_ilvC(Q87G) | 34 | CAGACACCTCCggaGCAGAAATCTTCACCAAC |
| 35 | AAGATTTCTGCtccGGAGGTGTCTGGAGCCAG | |
| pDCM2_ilvC(Q87F) | 36 | CAGACACCTCCttcGCAGAAATCTTCACCAAC |
| 37 | AAGATTTCTGCgaaGGAGGTGTCTGGAGCCAG | |
| pDCM2_ilvC(Q87M) | 38 | CAGACACCTCCatgGCAGAAATCTTCACCAAC |
| 39 | AAGATTTCTGCcatGGAGGTGTCTGGAGCCAG | |
| pDCM2_ilvC(Q87S) | 40 | CAGACACCTCCtctGCAGAAATCTTCACCAAC |
| 41 | AAGATTTCTGCagaGGAGGTGTCTGGAGCCAG | |
| pDCM2_ilvC(Q87P) | 42 | CAGACACCTCCcctGCAGAAATCTTCACCAAC |
| 43 | AAGATTTCTGCaggGGAGGTGTCTGGAGCCAG | |
| pDCM2_ilvC(Q87T) | 44 | CAGACACCTCCaccGCAGAAATCTTCACCAAC |
| 45 | AAGATTTCTGCggtGGAGGTGTCTGGAGCCAG | |
| pDCM2_ilvC(Q87Y) | 46 | CAGACACCTCCtatGCAGAAATCTTCACCAAC |
| 47 | AAGATTTCTGCataGGAGGTGTCTGGAGCCAG | |
| pDCM2_ilvC(Q87H) | 48 | CAGACACCTCCcatGCAGAAATCTTCACCAAC |
| 49 | AAGATTTCTGCatgGGAGGTGTCTGGAGCCAG | |
| pDCM2_ilvC(Q87Q) | 50 | CAGACACCTCCcagGCAGAAATCTTCACCAAC |
| 51 | AAGATTTCTGCctgGGAGGTGTCTGGAGCCAG | |
| pDCM2_ilvC(Q87N) | 52 | CAGACACCTCCaatGCAGAAATCTTCACCAAC |
| 53 | AAGATTTCTGCattGGAGGTGTCTGGAGCCAG | |
| pDCM2_ilvC(Q87K) | 54 | CAGACACCTCCaagGCAGAAATCTTCACCAAC |
| 55 | AAGATTTCTGCcttGGAGGTGTCTGGAGCCAG | |
| pDCM2_ilvC(Q87D) | 56 | CAGACACCTCCgatGCAGAAATCTTCACCAAC |
| 57 | AAGATTTCTGCatcGGAGGTGTCTGGAGCCAG | |
| pDCM2_ilvC(Q87C) | 58 | CAGACACCTCCtgtGCAGAAATCTTCACCAAC |
| 59 | AAGATTTCTGCacaGGAGGTGTCTGGAGCCAG | |
| pDCM2_ilvC(Q87W) | 60 | CAGACACCTCCtggGCAGAAATCTTCACCAAC |
| 61 | AAGATTTCTGCccaGGAGGTGTCTGGAGCCAG | |
| pDCM2_ilvC(Q87R) | 62 | CAGACACCTCCagaGCAGAAATCTTCACCAAC |
| 63 | AAGATTTCTGCtctGGAGGTGTCTGGAGCCAG | |
| pDCM2_ilvC(Q87E) | 64 | CAGACACCTCCgaaGCAGAAATCTTCACCAAC |
| 65 | AAGATTTCTGCttcGGAGGTGTCTGGAGCCAG |
| 균주명 | L-발린(g/L) | |
| 대조군 | KCCM11201P | 2.8 |
| 실험군 | KCCM11201P::ilvC(Q87V) | 3.3 |
| KCCM11201P::ilvC(Q87A) | 2.8 | |
| KCCM11201P::ilvC(Q87I) | 2.8 | |
| KCCM11201P::ilvC(Q87G) | 2.8 | |
| KCCM11201P::ilvC(Q87F) | 2.3 | |
| KCCM11201P::ilvC(Q87M) | 2.4 | |
| KCCM11201P::ilvC(Q87S) | 2.8 | |
| KCCM11201P::ilvC(Q87P) | 2.4 | |
| KCCM11201P::ilvC(Q87T) | 2.8 | |
| KCCM11201P::ilvC(Q87Y) | 2.5 | |
| KCCM11201P::ilvC(Q87H) | 2.8 | |
| KCCM11201P::ilvC(Q87Q) | 2.8 | |
| KCCM11201P::ilvC(Q87N) | 2.8 | |
| KCCM11201P::ilvC(Q87K) | 2.8 | |
| KCCM11201P::ilvC(Q87D) | 2.9 | |
| KCCM11201P::ilvC(Q87C) | 2.5 | |
| KCCM11201P::ilvC(Q87W) | 2.5 | |
| KCCM11201P::ilvC(Q87R) | 2.7 | |
| KCCM11201P::ilvC(Q87E) | 2.8 |
Claims (9)
- 서열번호 1의 아미노산 서열에서 87번째 위치에 상응하는 아미노산이 발린(V) 또는 아스파테이트(D)로 치환된, 케톨산 리덕토아이소머라제 변이체.
- 제1항에 있어서, 상기 변이체는 서열번호 3 또는 서열번호 25; 또는 이와 80% 이상 서열 동일성을 갖는 아미노산 서열을 포함하는, 변이체.
- 제1항 또는 제2항의 변이체를 코딩하는 폴리뉴클레오티드.
- 서열번호 1의 아미노산 서열에서 87번째 위치에 상응하는 아미노산이 발린(V) 또는 아스파테이트(D)로 치환된 케톨산 리덕토아이소머라제 변이체 또는 상기 변이체를 코딩하는 폴리뉴클레오티드를 포함하는, 미생물.
- 제4항에 있어서, 상기 미생물은 코리네박테리움 속 미생물인, 미생물.
- 제5항에 있어서, 상기 코리네박테리움 속 미생물은 코리네박테리움 글루타미쿰인, 미생물.
- 서열번호 1의 아미노산 서열에서 87번째 위치에 상응하는 아미노산이 발린(V) 또는 아스파테이트(D)로 치환된 케톨산 리덕토아이소머라제 변이체 또는 상기 변이체를 코딩하는 폴리뉴클레오티드를 포함하는 미생물을 배지에서 배양하는 단계를 포함하는, L-발린 생산 방법.
- 제7항에 있어서 상기 방법은 L-발린을 회수하는 단계를 더 포함하는, L-발린 생산 방법.
- 서열번호 1의 아미노산 서열에서 87번째 위치에 상응하는 아미노산이 발린(V) 또는 아스파테이트(D)로 치환된 케톨산 리덕토아이소머라제 변이체 또는 상기 변이체를 코딩하는 폴리뉴클레오티드를 포함하는 미생물; 상기 미생물을 배양한 배지; 또는 이들 중 2 이상의 조합을 포함하는, L-발린 생산용 조성물.
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| CN202380071024.3A CN119998445A (zh) | 2022-08-12 | 2023-08-11 | 酮醇酸还原异构酶变体和使用其生产l-缬氨酸的方法 |
| JP2025507798A JP2025526824A (ja) | 2022-08-12 | 2023-08-11 | ケトール酸レダクトイソメラーゼ変異体及びそれを用いたl-バリン生産方法 |
| EP23853058.8A EP4567106A4 (en) | 2022-08-12 | 2023-08-11 | Variant of ketol-acid reductoisomerase, and process for producing L-valine using it |
| MX2025001730A MX2025001730A (es) | 2022-08-12 | 2025-02-11 | Variante de cetol-ácido reductoisomerasa y método para producir l-valina mediante su uso |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN120118867A (zh) * | 2024-12-04 | 2025-06-10 | 浙江工业大学 | 具有底物特异性的酮醇酸还原异构酶突变体及d-泛酸高产菌株构建 |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100832740B1 (ko) * | 2007-01-17 | 2008-05-27 | 한국과학기술원 | 분지쇄 아미노산 생성능이 개선된 변이 미생물 및 이를이용한 분지쇄 아미노산의 제조방법 |
| US7662943B2 (en) | 2004-12-16 | 2010-02-16 | Cj Cheiljedang Corporation | Promoter sequences from Corynebacterium ammoniagenes |
| US8465962B2 (en) | 2011-08-16 | 2013-06-18 | Cj Cheiljedang Corporation | Microorganism having enhanced L-valine productivity and method for producing L-valine using the same |
| CN106190921A (zh) * | 2016-08-08 | 2016-12-07 | 天津科技大学 | 一种谷氨酸棒状杆菌与应用 |
| KR101947945B1 (ko) | 2018-01-25 | 2019-02-13 | 씨제이제일제당 (주) | L-아미노산을 생산하는 코리네박테리움 속 미생물 및 이를 이용한 l-아미노산의 생산방법 |
| US10273491B2 (en) | 2015-01-29 | 2019-04-30 | Cj Cheiljedang Corporation | Promoter and uses thereof |
| US10584338B2 (en) | 2016-08-31 | 2020-03-10 | Cj Cheiljedang Corporation | Promoter and use thereof |
| CN110982772A (zh) * | 2019-12-26 | 2020-04-10 | 新疆梅花氨基酸有限责任公司 | 一种高产缬氨酸的棒杆菌及其构建方法与应用 |
| KR20200136813A (ko) | 2020-03-17 | 2020-12-08 | 씨제이제일제당 (주) | 프리페네이트 디하이드라타아제 활성 강화를 통한 l-트립토판을 생산하는 방법 |
| KR102281368B1 (ko) * | 2021-01-28 | 2021-07-23 | 씨제이제일제당 (주) | 신규한 단백질 변이체 및 이를 이용한 l-발린 생산 방법 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MX347976B (es) * | 2011-03-24 | 2017-05-22 | Butamax(Tm) Advanced Biofuels Llc | Celulas huesped y metodos para producir isobutanol. |
| CN102286505B (zh) * | 2011-05-26 | 2013-04-03 | 江南大学 | 用于发酵生产l-缬氨酸的重组dna、菌株及方法 |
| NZ701099A (en) * | 2012-05-11 | 2017-04-28 | Butamax Advanced Biofuels Llc | Ketol-acid reductoisomerase enzymes and methods of use |
| WO2014052670A1 (en) * | 2012-09-26 | 2014-04-03 | Butamax (Tm) Advanced Biofuels Llc | Polypeptides with ketol-acid reductoisomerase activity |
-
2022
- 2022-08-12 KR KR1020220101231A patent/KR102801647B1/ko active Active
-
2023
- 2023-08-11 EP EP23853058.8A patent/EP4567106A4/en active Pending
- 2023-08-11 JP JP2025507798A patent/JP2025526824A/ja active Pending
- 2023-08-11 CN CN202380071024.3A patent/CN119998445A/zh active Pending
- 2023-08-11 WO PCT/KR2023/011906 patent/WO2024035191A1/ko not_active Ceased
-
2025
- 2025-02-11 MX MX2025001730A patent/MX2025001730A/es unknown
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7662943B2 (en) | 2004-12-16 | 2010-02-16 | Cj Cheiljedang Corporation | Promoter sequences from Corynebacterium ammoniagenes |
| KR100832740B1 (ko) * | 2007-01-17 | 2008-05-27 | 한국과학기술원 | 분지쇄 아미노산 생성능이 개선된 변이 미생물 및 이를이용한 분지쇄 아미노산의 제조방법 |
| US8465962B2 (en) | 2011-08-16 | 2013-06-18 | Cj Cheiljedang Corporation | Microorganism having enhanced L-valine productivity and method for producing L-valine using the same |
| US10273491B2 (en) | 2015-01-29 | 2019-04-30 | Cj Cheiljedang Corporation | Promoter and uses thereof |
| CN106190921A (zh) * | 2016-08-08 | 2016-12-07 | 天津科技大学 | 一种谷氨酸棒状杆菌与应用 |
| US10584338B2 (en) | 2016-08-31 | 2020-03-10 | Cj Cheiljedang Corporation | Promoter and use thereof |
| KR101947945B1 (ko) | 2018-01-25 | 2019-02-13 | 씨제이제일제당 (주) | L-아미노산을 생산하는 코리네박테리움 속 미생물 및 이를 이용한 l-아미노산의 생산방법 |
| CN110982772A (zh) * | 2019-12-26 | 2020-04-10 | 新疆梅花氨基酸有限责任公司 | 一种高产缬氨酸的棒杆菌及其构建方法与应用 |
| KR20200136813A (ko) | 2020-03-17 | 2020-12-08 | 씨제이제일제당 (주) | 프리페네이트 디하이드라타아제 활성 강화를 통한 l-트립토판을 생산하는 방법 |
| KR102281368B1 (ko) * | 2021-01-28 | 2021-07-23 | 씨제이제일제당 (주) | 신규한 단백질 변이체 및 이를 이용한 l-발린 생산 방법 |
Non-Patent Citations (18)
| Title |
|---|
| "Atlas Of Protein Sequence And Structure, National Biomedical Research Foundation", 1979, pages: 353 - 358 |
| "Guide to Huge Computers", 1994, ACADEMIC PRESS |
| APPLIED AND ENVIRONMENTAL MICROBIOLOGY, December 2010 (2010-12-01), pages 8053 - 8061 |
| ATSCHUL, S. F. ET AL., J MOLEC BIOL, vol. 215, 1990, pages 403 |
| BIOTECHNOLOGY AND BIOPROCESS ENGINEERING, vol. 19, June 2014 (2014-06-01), pages 456 - 467 |
| CARILLO ET AL., SIAM J APPLIED MATH, vol. 48, 1988, pages 1073 |
| DEVEREUX, J. ET AL., NUCLEIC ACIDS RESEARCH, vol. 12, 1984, pages 387 |
| J. SAMBROOK ET AL.: "Molecular Cloning, A Laboratory Manual", 1989, COLD SPRING HARBOR LABORATORY PRESS |
| NEEDLEMAN ET AL., J MOL BIOL., vol. 48, 1970, pages 443 |
| NEEDLEMANWUNSCH, J. MOL. BIOL., vol. 48, 1970, pages 443 - 453 |
| PROC. NATL. ACAD. SCI. USA, vol. 85, 1988, pages 2444 |
| RICE ET AL.: "EMBOSS: The European Molecular Biology Open Software Suite", TRENDS GENET., vol. 16, 2000, pages 276 - 277, XP004200114, DOI: 10.1016/S0168-9525(00)02024-2 |
| SAMBROOK ET AL., MOLECULAR CLONING, 2012 |
| See also references of EP4567106A4 |
| SITNICKA ET AL., FUNCTIONAL ANALYSIS OF GENES. ADVANCES IN CELL BIOLOGY, vol. 2, 2010, pages 1 - 16 |
| SMITHWATERMAN, ADV. APPL. MATH, vol. 2, 1981, pages 482 |
| VAN DER REST ET AL., APPL MICROBIOL BIOTECHNOL, vol. 52, 1999, pages 541 - 545 |
| WANG XIAOYUAN; ZHANG HAILING; QUINN PETER J.: "Production ofl-valine from metabolically engineeredCorynebacterium glutamicum", APPLIED MICROBIOLOGY AND BIOTECHNOLOGY, SPRINGER BERLIN HEIDELBERG, BERLIN/HEIDELBERG, vol. 102, no. 10, 29 March 2018 (2018-03-29), Berlin/Heidelberg, pages 4319 - 4330, XP036493154, ISSN: 0175-7598, DOI: 10.1007/s00253-018-8952-2 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120118867A (zh) * | 2024-12-04 | 2025-06-10 | 浙江工业大学 | 具有底物特异性的酮醇酸还原异构酶突变体及d-泛酸高产菌株构建 |
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|---|---|
| EP4567106A4 (en) | 2025-12-10 |
| EP4567106A1 (en) | 2025-06-11 |
| JP2025526824A (ja) | 2025-08-15 |
| MX2025001730A (es) | 2025-04-02 |
| CN119998445A (zh) | 2025-05-13 |
| KR20240023458A (ko) | 2024-02-22 |
| KR102801647B1 (ko) | 2025-04-30 |
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