WO2023121282A1 - 포스포에놀피루브산 카복실화효소를 코딩하는 유전자의 5'utr 변이 서열 및 이의 용도 - Google Patents
포스포에놀피루브산 카복실화효소를 코딩하는 유전자의 5'utr 변이 서열 및 이의 용도 Download PDFInfo
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- WO2023121282A1 WO2023121282A1 PCT/KR2022/020937 KR2022020937W WO2023121282A1 WO 2023121282 A1 WO2023121282 A1 WO 2023121282A1 KR 2022020937 W KR2022020937 W KR 2022020937W WO 2023121282 A1 WO2023121282 A1 WO 2023121282A1
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- WIPO (PCT)
- Prior art keywords
- nucleotide sequence
- variant
- utr
- polynucleotide
- encoding
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- GUBGYTABKSRVRQ-QUYVBRFLSA-N beta-maltose Chemical compound OC[C@H]1O[C@H](O[C@H]2[C@H](O)[C@@H](O)[C@H](O)O[C@@H]2CO)[C@H](O)[C@@H](O)[C@@H]1O GUBGYTABKSRVRQ-QUYVBRFLSA-N 0.000 description 1
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- 229920006238 degradable plastic Polymers 0.000 description 1
- 238000000502 dialysis Methods 0.000 description 1
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
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- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- ZPWVASYFFYYZEW-UHFFFAOYSA-L dipotassium hydrogen phosphate Chemical compound [K+].[K+].OP([O-])([O-])=O ZPWVASYFFYYZEW-UHFFFAOYSA-L 0.000 description 1
- 229910000396 dipotassium phosphate Inorganic materials 0.000 description 1
- 235000019797 dipotassium phosphate Nutrition 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
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- 238000000605 extraction Methods 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
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- ZDXPYRJPNDTMRX-UHFFFAOYSA-N glutamine Natural products OC(=O)C(N)CCC(N)=O ZDXPYRJPNDTMRX-UHFFFAOYSA-N 0.000 description 1
- 239000003102 growth factor Substances 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
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- 150000002484 inorganic compounds Chemical class 0.000 description 1
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- 229910052816 inorganic phosphate Inorganic materials 0.000 description 1
- 238000004255 ion exchange chromatography Methods 0.000 description 1
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 description 1
- 229910000358 iron sulfate Inorganic materials 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- 239000007951 isotonicity adjuster Substances 0.000 description 1
- 229930027917 kanamycin Natural products 0.000 description 1
- SBUJHOSQTJFQJX-NOAMYHISSA-N kanamycin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CN)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O[C@@H]2[C@@H]([C@@H](N)[C@H](O)[C@@H](CO)O2)O)[C@H](N)C[C@@H]1N SBUJHOSQTJFQJX-NOAMYHISSA-N 0.000 description 1
- 229960000318 kanamycin Drugs 0.000 description 1
- 229930182823 kanamycin A Natural products 0.000 description 1
- 239000008101 lactose Substances 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 229940099596 manganese sulfate Drugs 0.000 description 1
- 239000011702 manganese sulphate Substances 0.000 description 1
- 235000007079 manganese sulphate Nutrition 0.000 description 1
- SQQMAOCOWKFBNP-UHFFFAOYSA-L manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 description 1
- 239000000594 mannitol Substances 0.000 description 1
- 235000010355 mannitol Nutrition 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
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- 239000002808 molecular sieve Substances 0.000 description 1
- 229910000402 monopotassium phosphate Inorganic materials 0.000 description 1
- 235000019796 monopotassium phosphate Nutrition 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 125000001477 organic nitrogen group Chemical group 0.000 description 1
- KHPXUQMNIQBQEV-UHFFFAOYSA-N oxaloacetic acid Chemical compound OC(=O)CC(=O)C(O)=O KHPXUQMNIQBQEV-UHFFFAOYSA-N 0.000 description 1
- 238000012017 passive hemagglutination assay Methods 0.000 description 1
- 235000019319 peptone Nutrition 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000013600 plasmid vector Substances 0.000 description 1
- 229920001522 polyglycol ester Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- GNSKLFRGEWLPPA-UHFFFAOYSA-M potassium dihydrogen phosphate Chemical compound [K+].OP(O)([O-])=O GNSKLFRGEWLPPA-UHFFFAOYSA-M 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
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- 229940076788 pyruvate Drugs 0.000 description 1
- 229940107700 pyruvic acid Drugs 0.000 description 1
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- 108091008146 restriction endonucleases Proteins 0.000 description 1
- 210000003705 ribosome Anatomy 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000005185 salting out Methods 0.000 description 1
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- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
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- 239000012138 yeast extract Substances 0.000 description 1
Classifications
-
- 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
- C12N15/11—DNA or RNA fragments; Modified forms thereof; Non-coding nucleic acids having a biological activity
- C12N15/52—Genes encoding for enzymes or proenzymes
-
- 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
- C12N15/70—Vectors or expression systems specially adapted for E. coli
-
- 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
- C12N9/88—Lyases (4.)
-
- 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
- C12P7/00—Preparation of oxygen-containing organic compounds
- C12P7/62—Carboxylic acid esters
-
- 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
- C12P7/00—Preparation of oxygen-containing organic compounds
- C12P7/62—Carboxylic acid esters
- C12P7/625—Polyesters of hydroxy carboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Y—ENZYMES
- C12Y401/00—Carbon-carbon lyases (4.1)
- C12Y401/01—Carboxy-lyases (4.1.1)
- C12Y401/01031—Phosphoenolpyruvate carboxylase (4.1.1.31)
Definitions
- the present application relates to a variant gene encoding phosphoenolpyruvate carboxylase containing a variant 5'-untranslated region (5' Untranslated Region, 5'UTR), and a polyhydride containing the gene. It relates to a polyhydroxyalkanoate (PHA) producing microorganism and a PHA production method using the same.
- PHA polyhydroxyalkanoate
- PHA Polyhydroxyalkanoate
- P3HB has properties similar to polypropylene, a synthetic resin used in automobile parts and home appliance parts, and has been studied commercially because it can be synthesized relatively easily by microorganisms. However, it has a brittle property due to high crystallinity and is difficult to process because it decomposes near the melting point. Therefore, research is being conducted to produce a PHA copolymer through blending of new materials or copolymerization of monomers.
- P(3HB-co-4HB) (poly(3-hydroxybutyrate-co-4-hydroxybutyrate) copolymer is a material that has characteristics as an elastic body due to the addition of 4HB (4-hydroxybutyrate) monomer.
- the physical properties of PHA change depending on the addition ratio, and since it can be used in the production of various products, it is attracting attention as a promising biodegradable polymer material.
- the present inventors identified a variant gene encoding phosphoenolpyruvate carboxylase containing a variant 5'-untranslated region (5' Untranslated Region, 5'UTR), and included the gene.
- the present application was completed by confirming that PHA was produced in a polyhydroxyalkanoate (PHA) producing microorganism.
- PHA polyhydroxyalkanoate
- One object of the present application is to provide a variant polynucleotide encoding a variant 5'-untranslated region (5'UTR) in which one or more bases are mutated in the nucleotide sequence of SEQ ID NO: 1 will be.
- Another object of the present application is a mutant polynucleotide containing a nucleotide sequence encoding phosphoenolpyruvate carboxylase,
- the variant polynucleotide further comprises a nucleotide sequence encoding a variant 5'UTR in which one or more bases are mutated in the nucleotide sequence of SEQ ID NO: 1, to provide a variant polynucleotide.
- Another object of the present application is a mutant polynucleotide encoding a mutant 5'UTR in which one or more bases are mutated in the nucleotide sequence of SEQ ID NO: 1; Or a variant polynucleotide comprising a nucleotide sequence encoding phosphoenolpyruvate carboxylase, and a variant polynucleotide further comprising a nucleotide sequence encoding the variant 5'UTR; To provide a microorganism for producing polyhydroxyalkanoate (PHA).
- PHA polyhydroxyalkanoate
- Another object of the present application is a mutant polynucleotide encoding a mutant 5'UTR in which one or more bases are mutated in the nucleotide sequence of SEQ ID NO: 1; Or a variant polynucleotide comprising a nucleotide sequence encoding phosphoenolpyruvate carboxylase, and a variant polynucleotide further comprising a nucleotide sequence encoding the variant 5'UTR; It is to provide a PHA production method comprising the step of culturing a microorganism for use in a medium.
- Another object of the present application is a mutant polynucleotide encoding a mutant 5'UTR in which one or more bases are mutated in the nucleotide sequence of SEQ ID NO: 1; Or a variant polynucleotide comprising a nucleotide sequence encoding phosphoenolpyruvate carboxylase, and a variant polynucleotide further comprising a nucleotide sequence encoding the variant 5'UTR; for microorganisms; medium in which it was cultured; Or to provide a composition for producing PHA comprising a combination of two or more of them.
- Another object of the present application is a mutant polynucleotide encoding a mutant 5'UTR in which one or more bases are mutated in the nucleotide sequence of SEQ ID NO: 1; Or a variant polynucleotide comprising a nucleotide sequence encoding phosphoenolpyruvate carboxylase, further comprising a nucleotide sequence encoding the variant 5'UTR; to provide production use.
- the 5' Untranslated Region (5'UTR) mutant sequence of the present application can be used to control the carbon flux of the TCA cycle, especially polyhydroxyalkanoate (PHA) producing microorganisms It is possible to provide PHA having desired physical properties by adjusting the content of 4-hydroxybutyrate (4HB).
- PHA polyhydroxyalkanoate
- One aspect of the present application provides a variant polynucleotide encoding a variant 5'-untranslated region (5'UTR) in which one or more bases are mutated in the nucleotide sequence of SEQ ID NO: 1 .
- 5'-untranslated region 5' Untranslated Region, 5'UTR
- 5'UTR 5' Untranslated Region
- the translation of mRNA into protein begins with the binding of the 30S subunit of the ribosome to the 5'UTR.
- 16S rRNA (16S ribosomal RNA) in the 30S subunit of the ribosome binds to RBS in the 5'UTR and tRNA recognizes and binds to the initiation codon (AUG) of mRNA
- initiation codon AUG
- the ribosome binding site of the 5'UTR and the initiation codon are approximately 6 to 8 nucleotides apart.
- the 5'UTR may include a sequence complementary to the sequence at the 3' end of the 16S rRNA, that is, a sequence in which the Shine-Dalgarno sequence is conserved and the sequences before and after it are regulated.
- the "5'UTR sequence is regulated" or “regulated 5'UTR” refers to a modification of one or more bases in the nucleotide sequence constituting the 5'UTR, and such modification includes substitution, addition, deletion or inversion of bases.
- modification includes substitution, addition, deletion or inversion of bases.
- the 5'UTR may include a ribosome binding site (RBS).
- RBS ribosome binding site
- ribosome binding site refers to a region (structure) present inside an mRNA chain to which ribosomes can directly bind and initiate translation, or a region that causes the region to be transcribed.
- the ribosome recognizes and binds to the mRNA near the 5' upstream from the start codon (usually 'AUG') on the mRNA containing the open reading frame (ORF). It has RBS as a short sequence that makes it easy to do.
- RBS has a sequence complementary to the sequence at the 3' end of 16S rRNA, which is referred to as a Shine-Dalgarno sequence.
- the variant 5'UTR of the present application may be a 5'UTR in which one or more bases are mutated in the nucleotide sequence of SEQ ID NO: 1, which is a wild-type 5'UTR.
- the nucleotide sequence of SEQ ID NO: 1 may be a 5'-untranslated region (5'UTR) of a gene encoding phosphoenolpyruvate carboxylase.
- the 5'UTR of the present application may include, have, consist of, or essentially consist of the nucleotide sequence of SEQ ID NO: 1.
- the nucleotide sequence of SEQ ID NO: 1 is at least 70%, 75%, 76%, 80%, 84%, 85%, 88%, 90%, 92%, 95%, 96%, It may include base sequences having 97%, 98%, 99%, 99.5%, 99.7% or 99.9% or more homology or identity.
- nucleotide sequence has such homology or identity and exhibits efficacy corresponding to the 5'UTR, it is obvious that some sequences are deleted, modified, substituted, conservatively substituted, or added nucleotide sequences are also included within the scope of the present application.
- the 5'UTR in which one or more bases of the present application are mutated is a mutant RBS sequence in the 5'UTR, and may be used interchangeably with "mutant 5'UTR” or "mutant RBS-containing sequence".
- the variant 5'UTR of the present application may be one in which one or more bases of the bases corresponding to positions 15 to 22 in the nucleotide sequence of SEQ ID NO: 1 are mutated.
- the mutation may mean that a specific base is substituted with a base different from a base prior to substitution.
- variant 5'UTR of the present application may include a nucleotide sequence described in any one selected from SEQ ID NO: 2 to SEQ ID NO: 12.
- the variant 5'UTR of the present application has homology or identity with any one sequence selected from SEQ ID NO: 2 to SEQ ID NO: 12, compared to SEQ ID NO: 1 encoding the wild-type 5'UTR, SEQ ID NO: 2
- Each variant sequence among 12 to 12 is fixed and is at least 70%, at least 75%, at least 76%, at least 80%, at least 84%, at least 85%, at least 88%, at least 90%, at least 92% different from the entire sequence, Has or comprises at least 95%, at least 96%, at least 97%, at least 98%, at least 99%, at least 99.5%, at least 99.7%, at least 99.9%, and less than 100% of the sequence, or SEQ ID NO: 2 to sequence 70% or more, 75% or more, 76% or more, 80% or more, 84% or more, 85% or more, 88% or more, 90% or more, 92% or more of homology or identity with any one sequence selected from number 12 , contains, has, consists of, or consists of
- a nucleotide sequence has such homology or identity and exhibits an efficacy corresponding to the variant 5'UTR of the present application
- a variant 5' UTR having a base sequence in which some sequences are deleted, modified, substituted, conservatively substituted or added. It is obvious that UTRs are also included within the scope of the present application.
- polynucleotide refers to a DNA or RNA strand of a certain length or longer as a polymer of nucleotides in which nucleotide monomers are connected in a long chain shape by covalent bonds.
- mutant refers to a polynucleotide in which one or more nucleotides are modified and different from the nucleotide sequence of the variant polynucleotide before the mutation, but functions or properties are maintained.
- variants can generally be identified by modifying one or more bases in the nucleotide sequence of the polynucleotide and evaluating the characteristics of the modified polynucleotide. That is, the ability of the mutated polynucleotide may be increased, unchanged, or decreased compared to the polynucleotide before mutation.
- the variant polynucleotide is mixed with terms such as variant, modification, mutated polynucleotide, mutated gene, mutation and variant (in English, variant, modification, modified polynucleotide, modified gene, mutant, mutein, divergent, etc.) It can be used, and the term is not limited thereto as long as it is used in a mutated meaning.
- the variant polynucleotide may be conjugated with other sequences or linkers to enable identification, purification, or synthesis.
- corresponding to refers to a base at a position listed in a polynucleotide, or a base similar to, identical to, or homologous to a base listed in a polynucleotide. Identification of the bases of the corresponding positions may be determining the specific bases of the sequence that reference the specific sequence. As used herein, "corresponding region" generally refers to a similar or corresponding position in a related polynucleotide sequence or a reference polynucleotide sequence.
- an arbitrary nucleotide sequence can be aligned with SEQ ID NO: 1, and based on this, each base of the nucleotide sequence can be numbered by referring to the numerical position of the base corresponding to the base of SEQ ID NO: 1.
- sequence alignment algorithms such as those described herein, can identify the location of bases or locations 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) may be used, but it is not limited thereto, and a sequence alignment program known in the art, a pairwise sequence comparison algorithm, and the like may be appropriately used.
- the term 'homology' or 'identity' refers to the degree of similarity between two given amino acid sequences or base sequences and can be expressed as a percentage.
- the terms homology and identity are often used interchangeably.
- Sequence homology or identity of conserved polynucleotides or polypeptides can be determined by standard alignment algorithms, together with default gap penalties established by the program used. Substantially homologous or identical sequences are generally capable of hybridizing with all or part of the sequence under moderate or high stringent conditions. It is obvious that hybridization also includes hybridization with polynucleotides containing common codons or codons in consideration of codon degeneracy in polynucleotides.
- GAP program can define the total number of symbols in the shorter of the two sequences divided by the number of similarly arranged symbols (i.e., nucleotides or amino acids).
- the 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 penalty of 0.10 for each symbol in each gap (or 10 gap opening penalty, 0.5 gap extension penalty); and (3) no penalty for end gaps.
- the polynucleotide of the present application is a variant 5'UTR of the present application in consideration of codon degeneracy or a preferred codon in an organism intended to express a variant gene including the variant 5'UTR of the present application.
- Various modifications may be made to the coding region within the range of not changing the nucleotide sequence of the variant gene including.
- polynucleotide of the present application is included without limitation as long as it is a probe that can be prepared from a known gene sequence, for example, a sequence that can hybridize under stringent conditions with a sequence complementary to all or part of the polynucleotide sequence of the present application.
- stringent condition means a condition that allows 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, 76% or more, 80% or more, 84% or more, 85% or more, 88% or more, 90% or more, 92% or more
- Hybridization requires that two nucleic acids have complementary sequences, although mismatches between bases are possible depending on the stringency of hybridization.
- 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.
- the polynucleotides of the present application may also include substantially similar nucleic acid sequences as well as isolated nucleic acid fragments complementary to the entire sequence.
- a polynucleotide having homology or identity to 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 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.
- Appropriate stringency for hybridizing the polynucleotides depends on the length of the polynucleotides and the degree of complementarity, parameters well known in the art (e.g., J. Sambrook et al., supra).
- the variant polynucleotide encoding the variant 5'UTR of the present application may be one that regulates the translation of a polynucleotide encoding a target protein operably linked thereto into a protein.
- the target protein may be phosphoenolpyruvate carboxylase, but is not limited thereto, and the polynucleotide encoding the variant 5'UTR of the present application is a protein of polynucleotides encoding various target proteins. It can be used universally for the purpose of controlling translation.
- variant polynucleotide comprising a nucleotide sequence encoding phosphoenolpyruvate carboxylase, wherein the variant polynucleotide comprises one or more bases in the nucleotide sequence of SEQ ID NO: 1
- variant polynucleotide further comprising a nucleotide sequence encoding a variant 5'UTR in which a mutation is mutated.
- variant polynucleotide the nucleotide sequence of SEQ ID NO: 1 and the variant 5'UTR are as described above.
- phosphoenolpyruvate carboxylase is an enzyme that promotes the addition of bicarbonate to phosphorenol pyruvate to form oxaloacetate, a 4-carbon compound, and inorganic phosphate, It has a major effect on the carbon flux into the circuit, and the expression level of the ppc gene encoding it can affect the 4-hydroxybutyrate (4HB) content of polyhydroxyalkanoate (PHA) produced from microorganisms.
- amino acid sequence of the phosphoenolpyruvate carboxylase can be obtained from a known database such as NCBI's Genebank.
- the phosphoenolpyruvate carboxylase of the present application may be derived from a microorganism, but is not limited thereto.
- the phosphoenolpyruvate carboxylase may include, have, consist of, or consist essentially of the amino acid sequence set forth in SEQ ID NO: 26.
- the amino acid sequence of SEQ ID NO: 26 is at least 70%, 75%, 80% 85%, 90%, 95%, 96%, 97%, 98%, 99%, 99.5%, 99.7% or It may include amino acid sequences having 99.9% or more homology or identity.
- it is an amino acid sequence having such homology or identity and exhibiting an efficacy corresponding to the protein comprising the amino acid sequence of SEQ ID NO: 26, a protein having an amino acid sequence in which some sequences are deleted, modified, substituted, conservatively substituted, or added. It is obvious that it is also included within the scope of the present application.
- sequence additions or deletions naturally occurring mutations, silent mutations, or conservations to the amino acid sequence N-terminus, C-terminus, and/or within that do not alter the function of the protein of the present application. This is the case with redundant substitution.
- the "conservative substitution” refers to the substitution of one amino acid with another amino acid having similar structural and/or chemical properties. Such amino acid substitutions can generally occur based on similarities in polarity, charge, solubility, hydrophobicity, hydrophilicity and/or amphipathic nature of the residues. Typically, conservative substitutions may have little or no effect on the activity of the protein or polypeptide.
- the gene encoding phosphoenolpyruvate carboxylase may be a ppc gene.
- the nucleotide sequence of the ppc gene can be obtained from a known database, such as NCBI's Genebank.
- the ppc gene of the present application may be derived from a microorganism, but is not limited thereto.
- the polynucleotide encoding the phosphoenolpyruvate carboxylase of the present application may include a base sequence encoding the amino acid sequence set forth in SEQ ID NO: 27.
- the polynucleotide of the present application may have or include the sequence of SEQ ID NO: 27.
- the polynucleotide of the present application may consist of or essentially consist of the sequence of SEQ ID NO: 27.
- the phosphoenolpyruvate carboxylase may be encoded by a polynucleotide represented by the nucleotide sequence of SEQ ID NO: 27.
- the polynucleotide of the present application does not change the amino acid sequence of the phosphoenolpyruvate carboxylase in consideration of codon degeneracy or codons preferred in organisms intended to express the phosphoenolpyruvate carboxylase of the present application.
- Various modifications may be made to the coding region within a range not specified.
- the polynucleotide of the present application has 70%, 75%, 80% 85%, 90%, 95%, 96%, 97%, 98%, 99%, 99.5% homology or identity with the sequence of SEQ ID NO: 27. %, 99.7% or 99.9% or more of the base sequence.
- a variant polynucleotide comprising a nucleotide sequence encoding a phosphoenolpyruvate carboxylase of the present application contains a nucleotide sequence encoding a phosphoenolpyruvate carboxylase and is a wild type 5'
- a polynucleotide further comprising a nucleotide sequence encoding UTR the content of 4-hydroxybutyrate (4HB) monomer of polyhydroxyalkanoate (PHA) produced therefrom can be controlled.
- the 4HB monomer content of the PHA produced therefrom is controlled in the range of 3 to 21% by weight based on the total weight of PHA.
- the mutant polynucleotide containing the nucleotide sequence encoding phosphoenolpyruvate carboxylase of the present application has a 4HB monomer content of PHA produced therefrom of about 21% by weight or less based on the total weight of PHA, specifically, 20.3 wt% or less, 20 wt% or less, 19 wt% or less, 18.7 wt% or less, 18 wt% or less, 17 wt% or less, 16 wt% or less, 15 wt% or less, 14 wt% or less, 13.9 wt% or less, 13 wt% or less, 12 wt% or less, 11.6 wt% or less, 11 wt% or less, 10.7 wt% or less, 10 wt% or less, 9 wt% or less, 8.3 wt% or less, 8 wt% or less, 7 wt% or less, 6 wt% or less, 5 wt
- polyhydroxyalkanoate is a polyester-based natural polymer that accumulates in microorganisms. It is a biodegradable material, does not generate toxic waste, and is environmentally friendly with characteristics such as thermoplasticity and elasticity. known as polymers.
- PHA polyhydroxyalkanoate
- the most representative known material is P3HB (poly-3-hydroxybutyrate) polymerized using 3HB (3-hydroxybutyrate) monomer, and P (3HB- co-4HB) (poly(3-hydroxybutyrate-co-4-hydroxybutyrate) copolymers also exist, but are not limited thereto.
- the PHA specifically includes a 4HB monomer, but is different from 4HB.
- PHA copolymer further comprising the above monomers, or further comprising 2, 3, 4, 5, 6 or more monomers different from each other. More specifically, while including the 4HB monomer , Monomers that may be further included as monomers different from the 4HB include 2-hydroxybutyrate, lactic acid, glycolic acid, 3HB (3-hydroxybutyrate), 3HP (3-hydroxypropionate), 3HV (3-hydroxyvalerate), 3HH ( 3-hydroxyhexanoate), 3Hep(3-hydroxyheptanoate), 3HO(3-hydroxyoctanoate), 3HN(3-hydroxyoctanoate), 3HD(3-hydroxydecanoate), 3HDd(3-hydroxyundecanoate), 4HV(4-hydroxyvalerate), 5HV(5 -hydroxyvalerate) and 6HH (6-hydroxyhexanoate) may be one or more monomers selected from the group consisting of.
- the crystallinity (crystallinity) of PHA may vary depending on the addition ratio of the 4HB monomer, and more specifically, when the content of the 4HB monomer is increased, the crystallinity is lowered, so that the PHA exhibits amorphous properties rather than semi-crystalline properties, thereby improving processability. Since this may be lowered, it is important to maintain the processability of PHA by maintaining an appropriate 4HB monomer content.
- the variant polynucleotide containing the nucleotide sequence encoding the phosphoenolpyruvate carboxylase of the present application is adjusted so that the 4HB monomer content of the PHA is included in the range of 3 to 21% by weight based on the total weight of the PHA, thereby improving processability.
- PHA having this excellent semi-crystalline physical property can be prepared.
- Another aspect of the present application is a mutant polynucleotide encoding a mutant 5'UTR in which one or more bases are mutated in the nucleotide sequence of SEQ ID NO: 1;
- a variant polynucleotide comprising a nucleotide sequence encoding phosphoenolpyruvate carboxylase, further comprising a nucleotide sequence encoding the variant 5'UTR; Or to provide a vector containing it.
- variant polynucleotide the nucleotide sequence of SEQ ID NO: 1 and the variant 5'UTR are as described above.
- the vector may be an expression vector for expressing a desired polynucleotide in a host cell, but is not limited thereto.
- the vector of the present application is an expression control region (or expression control sequence) suitable for expressing a target polynucleotide, that is, a variant polynucleotide further comprising a nucleotide sequence encoding the variant 5'UTR of the present application in a suitable host.
- a target polynucleotide that is, a variant polynucleotide further comprising a nucleotide sequence encoding the variant 5'UTR of the present application in a suitable host.
- the expression control region may include a promoter capable of initiating transcription, an arbitrary operator sequence for regulating such transcription, a sequence encoding a suitable RBS, and a sequence regulating termination of transcription and translation. After transformation into a suitable host cell, the vector can replicate or function independently of the host genome and can integrate into the genome itself.
- Vectors used in the present application are not particularly limited, and any vectors known in the art may be used.
- Examples of commonly used vectors include natural or recombinant plasmids, cosmids, viruses and bacteriophages.
- 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 , pBluescriptII-based, pGEM-based, pTZ-based, pCL-based, pET-based, etc. can be used.
- pDZ, pDC, pDCM2, pACYC177, pACYC184, pCL, pECCG117, pUC19, pBR322, pMW118, pCC1BAC vectors and the like can be used.
- a target polynucleotide may be inserted into a chromosome through a vector for chromosomal insertion into a cell. 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.
- a selection marker for determining whether the chromosome is inserted may be further included.
- the selectable marker is used to select cells transformed with a vector, that is, to determine whether a target nucleic acid molecule has been inserted, and can exhibit selectable phenotypes such as drug resistance, auxotrophy, resistance to cytotoxic agents, or surface polypeptide expression. markers may be used. In an environment treated with a selective agent, only cells expressing the selectable marker survive or exhibit other expression traits, so transformed cells can be selected.
- the term "transformation” means introducing a vector containing a target polynucleotide into a host cell or microorganism so that the polynucleotide can be expressed in the host cell.
- the transformed polynucleotide may be inserted into and located in the chromosome of the host cell or located outside the chromosome.
- the polynucleotide includes DNA and/or RNA encoding a polypeptide of interest.
- the polynucleotide may be introduced in any form as long as it can be introduced and expressed into a host cell.
- the polynucleotide may be introduced into a host cell in the form of an expression cassette, which is a genetic construct containing all elements required 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 necessary for expression in the host cell, but is not limited thereto.
- operably linked in the above means a promoter sequence that initiates and mediates the expression of a variant polynucleotide further comprising a nucleotide sequence encoding the desired variant 5'UTR of the present application and the mutation It means that the nucleotide sequence of the variant polynucleotide further comprising the nucleotide sequence encoding the 5'UTR is functionally linked.
- the nucleotide sequence encoding the variant 5'UTR that is, the variant polynucleotide encoding the variant 5'UTR, translates the polynucleotide encoding the target protein operably linked thereto into a protein.
- the target protein may be phosphoenolpyruvate carboxylase, but is not limited thereto, and is universal for the purpose of regulating the translation of polynucleotides encoding various target proteins into proteins. can be used as
- Another aspect of the present application is a mutant polynucleotide encoding a mutant 5'UTR in which one or more bases are mutated in the nucleotide sequence of SEQ ID NO: 1; Or a variant polynucleotide comprising a nucleotide sequence encoding phosphoenolpyruvate carboxylase, and a variant polynucleotide further comprising a nucleotide sequence encoding the variant 5'UTR; To provide a microorganism for producing hydroxy alkanoate.
- the microorganism of the present application includes a mutant polynucleotide encoding a mutant 5'UTR in which one or more bases are mutated in the nucleotide sequence of SEQ ID NO: 1 of the present application;
- a variant polynucleotide comprising a nucleotide sequence encoding phosphoenolpyruvate carboxylase, further comprising a nucleotide sequence encoding the variant 5'UTR; Or a vector containing them; It may include any one or more selected from among.
- microorganism includes both wild-type microorganisms and naturally or artificially genetically modified microorganisms, and causes such as insertion of foreign genes or enhancement or inactivation of endogenous gene activity.
- a microorganism whose specific mechanism is attenuated or enhanced due to, it may be a microorganism containing genetic modification for the expression of a desired polynucleotide.
- the microorganism may be a microorganism of the genus Escherichia . Specifically, the microorganism may be Escherichia coli .
- the strain of the present application may have the ability to produce PHA.
- the strain of the present application is a mutant nucleic acid molecule that can be transcribed into a mutant 5'UTR of the present application into a natural wild-type microorganism, an unmodified microorganism, or a microorganism that produces PHA; Or a mutant gene encoding a phosphoenolpyruvate carboxylase containing a mutant nucleic acid molecule that can be transcribed into a mutant 5'UTR; may be a recombinant strain introduced.
- the term "unmodified microorganism” does not exclude strains containing mutations that may occur naturally in microorganisms, and are wild-type strains or wild-type strains themselves, or are genetically modified by natural or artificial factors. It may mean a strain before change.
- the non-modified microorganism may include a mutant polynucleotide encoding the mutant 5'UTR described herein; Or a variant polynucleotide comprising a nucleotide sequence encoding phosphoenolpyruvate carboxylase, further comprising a nucleotide sequence encoding the variant 5'UTR; is not introduced or introduced It may mean the previous strain.
- the "unmodified microorganism” may be used interchangeably with “strain before transformation”, “microorganism before transformation”, “non-mutated strain”, “unmodified strain”, “non-mutated microorganism” or “reference microorganism”.
- the strains of this application are polyhydes produced therefrom compared to strains expressing a gene encoding a phosphoenolpyruvate carboxylase comprising a nucleic acid molecule capable of being transcribed into a wild-type 5'UTR.
- the 4HB monomer content of hydroxy alkanoate may be adjusted to be included in the range of 3 to 21% by weight based on the total weight of PHA.
- the activity of some proteins in the PHA biosynthetic pathway may be additionally enhanced or weakened.
- the variant polynucleotide, the nucleotide sequence of SEQ ID NO: 1, the variant 5'UTR and PHA, etc. are as described in the other embodiments.
- Another aspect of the present application is a mutant polynucleotide encoding a mutant 5'UTR in which one or more bases are mutated in the nucleotide sequence of SEQ ID NO: 1; Or a variant polynucleotide comprising a nucleotide sequence encoding phosphoenolpyruvate carboxylase, and a variant polynucleotide further comprising a nucleotide sequence encoding the variant 5'UTR; It provides a method for producing PHA, comprising the step of culturing a microorganism for use in a culture medium.
- the PHA production method of the present application includes a mutant polynucleotide encoding a mutant 5'UTR in which one or more bases are mutated in the nucleotide sequence of SEQ ID NO: 1 of the present application; A variant polynucleotide comprising a nucleotide sequence encoding phosphoenolpyruvate carboxylase, further comprising a nucleotide sequence encoding the variant 5'UTR; Or a vector containing them; It may include culturing a microorganism containing any one or more selected from the medium.
- the term "culture” means growing the microorganism of the present application under appropriately controlled environmental conditions.
- the culture process of the present application may be performed according to suitable media and culture conditions known in the art. This culturing process can be easily adjusted and used by those skilled in the art according to the selected microorganism.
- the culture may be batch, continuous and/or fed-batch, but is not limited thereto.
- the term "medium” refers to a material in which nutrients necessary for culturing the microorganisms of the present application are mixed as main components, and supplies nutrients and growth factors, including water essential for survival and growth.
- the medium and other culture conditions used for culturing the microorganisms of the present application can be any medium without particular limitation as long as it is a medium used for culturing ordinary microorganisms, but the microorganisms of the present application are suitable as carbon sources, nitrogen sources, personnel, and inorganic materials. It can be cultured while controlling temperature, pH, etc. under aerobic conditions in a conventional medium containing compounds, amino acids, and/or vitamins.
- Examples of the carbon source in the present application include carbohydrates such as glucose, saccharose, lactose, fructose, sucrose, and 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 nutrients such as starch hydrolysate, molasses, blackstrap molasses, rice winter, cassava, sorghum pomace and corn steep liquor can be used, specifically glucose and sterilized pretreated molasses (i.e. converted to reducing sugar).
- Carbohydrates such as molasses
- other carbon sources in an appropriate amount may be used in various ways without limitation. These carbon sources may be used alone or in combination of two or more, but are not limited thereto.
- nitrogen source examples include inorganic nitrogen sources such as ammonia, ammonium sulfate, ammonium chloride, ammonium acetate, ammonium phosphate, ammonium carbonate, and ammonium nitrate; Amino acids such as glutamic acid, methionine, glutamine, etc., organic nitrogen sources such as peptone, NZ-amine, meat extract, yeast extract, malt extract, corn steep liquor, casein hydrolysate, 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 are not limited thereto.
- inorganic nitrogen sources such as ammonia, ammonium sulfate, ammonium chloride, ammonium acetate, ammonium phosphate, ammonium carbonate, and ammonium nitrate
- Amino acids such as glutamic acid, methionine, glutamine, etc.
- organic nitrogen sources such as peptone, NZ-amine,
- the number of persons may include monopotassium phosphate, dipotassium phosphate, or a sodium-containing salt corresponding thereto.
- the inorganic compound sodium chloride, calcium chloride, iron chloride, magnesium sulfate, iron sulfate, manganese sulfate, calcium carbonate, etc. may be used, and 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, it is not limited thereto.
- the pH of the medium can be adjusted by adding compounds such as ammonium hydroxide, potassium hydroxide, ammonia, phosphoric acid, sulfuric acid and the like to the medium in an appropriate manner during the cultivation of the microorganism of the present application.
- an antifoaming agent such as a fatty acid polyglycol ester.
- oxygen or oxygen-containing gas may be injected into the medium, or nitrogen, hydrogen or carbon dioxide gas may be injected without gas injection or nitrogen, hydrogen or carbon dioxide gas may be injected to maintain the anaerobic and non-aerobic state. It is not.
- the culture temperature may be maintained at 20 to 45 ° C, specifically 25 to 40 ° C, and may be cultured for about 10 to 160 hours, but is not limited thereto.
- PHA produced by the culture of the present application may be secreted into the medium or remain in the cells.
- the PHA production method of the present application includes preparing the microorganism of the present application, preparing a medium for culturing the microorganism, or a combination thereof (in any order), for example, the culture Prior to the step of doing, it may be further included.
- the PHA production method of the present application may further include a step of recovering PHA from the culture medium (culture medium) or strain.
- the recovering step may be further included after the culturing step.
- the recovery may be to collect the desired PHA using a suitable method known in the art according to the culture method of the microorganism of the present application, for example, a batch, continuous or fed-batch culture method.
- a suitable method known in the art according to the culture method of the microorganism of the present application, for example, a batch, continuous or fed-batch culture method.
- centrifugation, filtration, treatment with a precipitating agent for crystallized proteins salting out method
- extraction sonic disruption
- ultrafiltration dialysis
- molecular sieve chromatography gel filtration
- adsorption chromatography ion exchange chromatography
- affinity Various types of chromatography, such as chromatography, HPLC, or a combination thereof may be used, and the desired PHA may be recovered from a medium or microorganism using a suitable method known in the art.
- the PHA production method of the present application may additionally include a purification step.
- the purification may be performed using suitable methods known in the art.
- the recovery step and the purification step are performed continuously or discontinuously regardless of order, or performed simultaneously or integrated into one step. It may be, but is not limited thereto.
- a mutant gene encoding a phosphoenolpyruvate carboxylase containing a mutant nucleic acid molecule that can be transcribed into a mutant 5'UTR expressed by a strain of the present application is a wild-type 5'UTR.
- the 4HB monomer content of polyhydroxy alkanoate produced therefrom is 3 to 21 weight based on the total weight of PHA. It can be adjusted to include %.
- the variant polynucleotide, the nucleotide sequence of SEQ ID NO: 1, the variant 5'UTR and PHA, etc. are as described in the other embodiments.
- Another aspect of the present application is a mutant polynucleotide encoding a mutant 5'UTR in which one or more bases are mutated in the nucleotide sequence of SEQ ID NO: 1; Or a variant polynucleotide comprising a nucleotide sequence encoding phosphoenolpyruvate carboxylase, and a variant polynucleotide further comprising a nucleotide sequence encoding the variant 5'UTR; for microorganisms; medium in which it was cultured; Or to provide a composition for producing PHA comprising a combination of two or more of them.
- composition of the present application may further include any suitable excipient commonly used in compositions for producing PHA, such an excipient may be, for example, a preservative, a wetting agent, a dispersing agent, a suspending agent, a buffer, a stabilizer, or an isotonic agent. However, it is not limited thereto.
- Another aspect of the present application is a mutant polynucleotide encoding a mutant 5'UTR in which one or more bases are mutated in the nucleotide sequence of SEQ ID NO: 1; Or a variant polynucleotide comprising a nucleotide sequence encoding phosphoenolpyruvate carboxylase, further comprising a nucleotide sequence encoding the variant 5'UTR; Provides production use.
- variant polynucleotide the nucleotide sequence of SEQ ID NO: 1, the variant 5'UTR and PHA, etc. are as described in the other embodiments.
- Example 1 Encoding phosphoenolpyruvate carboxylase ppc Library construction and screening for introducing mutations in the 5'-untranslated region (5'UTR) of the gene
- a template vector for constructing a 5'UTR mutation library of the ppc gene was constructed in the following manner.
- the 5'-UTR sequence of the wild-type ppc gene was amplified using the chromosome of Escherichia coli MG1655 as a template and the primer pair of SEQ ID NOs: 13 and 14.
- PCR conditions were repeated 25 times: denaturation at 95°C for 20 seconds, annealing at 56°C for 40 seconds, and extension at 72°C for 30 seconds.
- a fluorescent protein to be expressed under the promoter was amplified using a primer pair of SEQ ID NOs: 15 and 16.
- a template vector was constructed by cloning the two amplified products and the pCL1920 vector treated with BamH1 restriction enzyme (NEB) by assembly method.
- NEB BamH1 restriction enzyme
- the randomized sequence was amplified from the prepared template vector using a pair of primers of SEQ ID NOs: 13 and 17. PCR conditions were repeated 25 times: denaturation at 95°C for 20 seconds, annealing at 56°C for 40 seconds, and elongation at 72°C for 30 seconds. The remaining sequences of the template vector were amplified using the primer pair of SEQ ID NOs: 18 and 19, and a library vector was obtained by cloning the amplified two fragments in an assembly method. PCR conditions were repeated 25 times: denaturation at 95°C for 20 seconds, annealing at 56°C for 40 seconds, and elongation at 72°C for 3 minutes. E.
- coli DH5 ⁇ was used for cloning, and LB medium containing 75 mg/L of Spectinomycin was used for strain selection.
- Spectinomycin was used for strain selection.
- AccuPower ® ProFi Taq PCR PreMix (Bioneer) was used for DNA amplification.
- a single colony obtained by transforming the constructed library vector into E. coli MG1655 was inoculated into a 96-well plate containing 500 ⁇ L of LB medium supplemented with 75 mg/L of spectinomycin and cultured at 37° C. for 16 hours. .
- the saturated culture was inoculated with a 1/100 dilution in 500 ⁇ L of a polyhydroxyalkanoate (PHA) production medium (US 10323261 B2), and fluorescence was measured after the cells were sufficiently saturated in the culture medium.
- PHA polyhydroxyalkanoate
- a template vector having the 5'-UTR sequence of the wild-type ppc gene was used as a control. Fluorescence and OD 600 were measured using a multilabel plate reader (PerkinElmer), and the measured fluorescence values were normalized by dividing by OD 600 .
- sequence number sequence name Sequence (5' -> 3') 13 primer 1 CGACGGCCAGTGAATTCGAGCTCGGTACCCGGGGTCGGATGCGATACTTGCGCATC 14 primer 2 CTCCAGTGAAAAGTTCTTCTCCTTTACTGACATTACTACGCAATGCGGAATATTG 15 primer 3 GAACAATATTCCGCATTGCGTAGTAATGTCAGTAAAGGAGAAGAACTTTTCACTG 16 primer 4 GACCATGATTACGCCAAGCTTGCATGCCTGCAGGTCGACTCTAGAGCTCAAATGCCTGAGGTTTCAG 17 primer 5 GCGGAATATTGTTCGTTCATATTNNNNNNNNNACCCCATC 18 primer 6 ATGAACGAACAATATTCCGC 19 primer 7 CCCGGGTACCGAGCTCGAATTCAC
- PHA-co-4HB poly(3-hydroxybutyrate-co-4-hydroxybutyrate) production strain
- a PHA production strain into which the mutant RBS sequence identified in Example 1 was introduced was prepared.
- PHA was produced.
- (3HB-co-4HB) a P (3HB-co-4HB) production strain producing about 20% of 4HB content was used (US 10323261 B2).
- PCR conditions were denaturation at 95°C for 20 seconds, annealing at 56°C for 40 seconds, and elongation at 72°C for 30 seconds, and repeated 25 times using a linear DNA fragment containing a selectable marker.
- the att-Kan R -att DNA fragment was amplified using the primer pair of SEQ ID NOs: 22 and 23.
- the PCR conditions were denaturation at 95 ° C for 20 seconds, annealing at 56 ° C for 40 seconds, elongation at 72 ° C 2 This was repeated 25 times.
- overlap PCR was performed using the primer pair of SEQ ID NOs: 24 and 25.
- the PCR conditions were denaturation 95 ° C. for 20 seconds, annealing 56 ° C.
- the amplified DNA was transformed into a PHA-producing strain, and the RBS mutation was introduced in a selection medium containing 50 mg/L of kanamycin.
- AccuPower® ProFi Taq PCR PreMix (Bioneer) was used.
- sequence number sequence name Sequence (5' -> 3') 20 primer 8 CTTGATGGTTTCTCCCAGCACTTTGCCGAGCATACTGACATTACTACGCAATGCGGAATATTG 21 primer 9 CATAGCTGTGAAGCAGCTCCAGCCTACACTTAACATTTCCATAAGTTACG 22 primer 10 CTTATGGAAATGTTAAGTGTAGGCTGGAGCTGCTTC 23 primer 11 AATAATGTCGGATGCGATACTTGCGCATCTTATCCGACCTACACCTTTGGTGTTACTTGGGGCGATTTTATGGGAATTAGCCATGGTCC 24 primer 12 CTTGATGGTTTCTCCCAGCAC 25 primer 13 AATAATGTCGGATGCGATACTTG
- the 4HB content of the PHA-producing strains each introducing a mutant sequence is shown in Table 5 below.
- the 4HB content in the PHA was 21.2%, whereas in the case of the mutant strains having the mutant RBS sequence, the 4HB content in the PHA decreased from 20.3% to 3.2%. Therefore, it was confirmed that the content of the PHA monomer can be effectively controlled by introducing the mutant RBS sequence into the PHA-producing strain.
- the Pppc_v10 strain was named CB02-6588 and deposited with the Korean Culture Center of Microorganisms (KCCM), an international depository under the Budapest Treaty, on December 9, 2022. It was assigned the number KCCM13300P.
- KCCM Korean Culture Center of Microorganisms
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Abstract
Description
플라스미드 이름 | 유전형 |
주형 벡터 | pCL1920-Pppc-gfp, SpR |
라이브러리 벡터 | pCL1920-Pppc*-gfp, SpR |
Vector ver.1 | pCL1920-Pppc_v1-gfp, SpR |
Vector ver.2 | pCL1920-Pppc_v2-gfp, SpR |
Vector ver.3 | pCL1920-Pppc_v3-gfp, SpR |
Vector ver.4 | pCL1920-Pppc_v4-gfp, SpR |
Vector ver.5 | pCL1920-Pppc_v5-gfp, SpR |
Vector ver.6 | pCL1920-Pppc_v6-gfp, SpR |
Vector ver.7 | pCL1920-Pppc_v7-gfp, SpR |
Vector ver.8 | pCL1920-Pppc_v8-gfp, SpR |
Vector ver.9 | pCL1920-Pppc_v9-gfp, SpR |
Vector ver.10 | pCL1920-Pppc_v10-gfp, SpR |
Vector ver.11 | pCL1920-Pppc_v11-gfp, SpR |
서열번호 | 서열명 | 서열(5' -> 3') |
13 | primer 1 | CGACGGCCAGTGAATTCGAGCTCGGTACCCGGGGTCGGATGCGATACTTGCGCATC |
14 | primer 2 | CTCCAGTGAAAAGTTCTTCTCCTTTACTGACATTACTACGCAATGCGGAATATTG |
15 | primer 3 | GAACAATATTCCGCATTGCGTAGTAATGTCAGTAAAGGAGAAGAACTTTTCACTG |
16 | primer 4 | GACCATGATTACGCCAAGCTTGCATGCCTGCAGGTCGACTCTAGAGCTCAAATGCCTGAGGTTTCAG |
17 | primer 5 | GCGGAATATTGTTCGTTCATATTNNNNNNNNNACCCCATC |
18 | primer 6 | ATGAACGAACAATATTCCGC |
19 | primer 7 | CCCGGGTACCGAGCTCGAATTCAC |
서열번호 | 명칭 | 5'-UTR 서열(5' -> 3') |
1 | Pppc (WT) | GATAAGATGGGGTGTCTGGGGTAAT |
2 | Pppc_v1 | GATAAGATGGGGTGTCGGGGGTAAT |
3 | Pppc_v2 | GATAAGATGGGGTGTCTGAGGGAAT |
4 | Pppc_v3 | GATAAGATGGGGTGTCGGAGGGAAT |
5 | Pppc_v4 | GATAAGATGGGGTGTATGGGGGAAT |
6 | Pppc_v5 | GATAAGATGGGGTGGCGGACGTAAT |
7 | Pppc_v6 | GATAAGATGGGGTGTCTGGGGGAAT |
8 | Pppc_v7 | GATAAGATGGGGTGTCGGGGGGAAT |
9 | Pppc_v8 | GATAAGATGGGGTGGAGGACGGAAT |
10 | Pppc_v9 | GATAAGATGGGGTGGCGGGGGGAAT |
11 | Pppc_v10 | GATAAGATGGGGTGGATGGGGGAAT |
12 | Pppc_v11 | GATAAGATGGGGTGTCGGGCGTAAT |
서열번호 | 서열명 | 서열(5' -> 3') |
20 | primer 8 | CTTGATGGTTTCTCCCAGCACTTTGCCGAGCATACTGACATTACTACGCAATGCGGAATATTG |
21 | primer 9 | CATAGCTGTGAAGCAGCTCCAGCCTACACTTAACATTTCCATAAGTTACG |
22 | primer 10 | CTTATGGAAATGTTAAGTGTAGGCTGGAGCTGCTTC |
23 | primer 11 | AATAATGTCGGATGCGATACTTGCGCATCTTATCCGACCTACACCTTTGGTGTTACTTGGGGCGATTTTATGGGAATTAGCCATGGTCC |
24 | primer 12 | CTTGATGGTTTCTCCCAGCAC |
25 | primer 13 | AATAATGTCGGATGCGATACTTG |
서열명 | PHA (mg) | 4HB 함량 (중량%) |
Pppc | 12.3 | 21.2% |
Pppc_v1 | 11.9 | 20.3% |
Pppc_v2 | 12.8 | 13.9% |
Pppc_v3 | 13.8 | 18.7% |
Pppc_v4 | 13.5 | 12.0% |
Pppc_v5 | 7.7 | 8.3% |
Pppc_v6 | 9.8 | 11.6% |
Pppc_v7 | 12.1 | 10.7% |
Pppc_v8 | 12.9 | 16.0% |
Pppc_v9 | 13.2 | 9.0% |
Pppc_v10 | 14.2 | 5.0% |
Pppc_v11 | 11.3 | 3.2% |
Claims (13)
- 서열번호 1의 염기서열에서 하나 이상의 염기가 변이된, 변이형 5'-비번역부위(5' Untranslated Region, 5'UTR)를 코딩하는, 변이형 폴리뉴클레오티드.
- 포스포에놀피루브산 카복실화효소(phosphoenolpyruvate carboxylase)를 코딩하는 염기서열을 포함하는 변이형 폴리뉴클레오티드로,상기 변이형 폴리뉴클레오티드는 서열번호 1의 염기서열에서 하나 이상의 염기가 변이된, 변이형 5’UTR을 코딩하는 염기서열을 추가로 포함하는, 변이형 폴리뉴클레오티드.
- 제1항 또는 제2항에 있어서, 상기 변이형 5’UTR은 서열번호 1의 염기서열에서 15번째 내지 22번째에 상응하는 위치의 염기 중 어느 하나 이상의 염기가 변이된 것인, 변이형 폴리뉴클레오티드.
- 제1항 또는 제2항에 있어서, 상기 변이형 5’UTR은 서열번호 2 내지 12 중 선택되는 어느 하나 이상의 염기서열을 포함하는 것인, 변이형 폴리뉴클레오티드.
- 제1항에 있어서, 상기 변이형 5’UTR을 코딩하는 변이형 폴리뉴클레오티드는, 이와 작동가능하게 연결된 목적 단백질을 코딩하는 폴리뉴클레오티드의 단백질로의 번역을 조절하는 것인, 변이형 폴리뉴클레오티드.
- 제5항에 있어서, 상기 목적 단백질은 포스포에놀피루브산 카복실화효소인 것인, 변이형 폴리뉴클레오티드.
- 제2항에 있어서, 상기 포스포에놀피루브산 카복실화효소를 코딩하는 염기서열을 포함하는 변이형 폴리뉴클레오티드는, 포스포에놀피루브산 카복실화효소를 코딩하는 염기서열을 포함하고 야생형 5’UTR을 코딩하는 염기서열을 추가로 포함하는 폴리뉴클레오티드와 비교하여, 이로부터 생산되는 폴리히드록시 알카노에이트(polyhydroxyalkanoate)의 4HB(4-hydroxybutyrate) 단량체 함량이 PHA 총 중량 기준 3 내지 21 중량% 함량 범위로 조절되는 것인, 변이형 폴리뉴클레오티드.
- 서열번호 1의 염기서열에서 하나 이상의 염기가 변이된, 변이형 5’UTR을 코딩하는 변이형 폴리뉴클레오티드; 또는 포스포에놀피루브산 카복실화효소를 코딩하는 염기서열을 포함하는 변이형 폴리뉴클레오티드로, 상기 변이형 5’UTR을 코딩하는 염기서열을 추가로 포함하는 변이형 폴리뉴클레오티드;를 포함하는, 폴리히드록시 알카노에이트 생산용 미생물.
- 제8항에 있어서, 상기 미생물로부터 생산되는 폴리히드록시 알카노에이트의 4HB 단량체 함량이 PHA 총 중량 기준 3 내지 21 중량% 함량 범위로 조절되는 것인, 미생물.
- 서열번호 1의 염기서열에서 하나 이상의 염기가 변이된, 변이형 5’UTR을 코딩하는 변이형 폴리뉴클레오티드; 또는 포스포에놀피루브산 카복실화효소를 코딩하는 염기서열을 포함하는 변이형 폴리뉴클레오티드로, 상기 변이형 5’UTR을 코딩하는 염기서열을 추가로 포함하는 변이형 폴리뉴클레오티드;를 포함하는, 폴리히드록시 알카노에이트 생산용 미생물을 배지에서 배양하는 단계를 포함하는, 폴리히드록시 알카노에이트 생산방법.
- 제10항에 있어서, 상기 포스포에놀피루브산 카복실화효소를 코딩하는 염기서열을 포함하는 변이형 폴리뉴클레오티드는, 포스포에놀피루브산 카복실화효소를 코딩하는 염기서열을 포함하고 야생형 5’UTR을 코딩하는 염기서열을 추가로 포함하는 폴리뉴클레오티드와 비교하여, 이로부터 생산되는 폴리히드록시 알카노에이트의 4HB 단량체 함량이 PHA 총 중량 기준 3 내지 21 중량% 함량 범위로 조절되는 것인, 방법.
- 서열번호 1의 염기서열에서 하나 이상의 염기가 변이된, 변이형 5'UTR을 코딩하는 변이형 폴리뉴클레오티드; 또는 포스포에놀피루브산 카복실화효소를 코딩하는 염기서열을 포함하는 변이형 폴리뉴클레오티드로, 상기 변이형 5'UTR을 코딩하는 염기서열을 추가로 포함하는 변이형 폴리뉴클레오티드;를 포함하는, PHA 생산용 미생물; 이를 배양한 배지; 또는 이들 중 2 이상의 조합을 포함하는 PHA 생산용 조성물.
- 서열번호 1의 염기서열에서 하나 이상의 염기가 변이된, 변이형 5'UTR을 코딩하는 변이형 폴리뉴클레오티드; 또는 포스포에놀피루브산 카복실화효소를 코딩하는 염기서열을 포함하는 변이형 폴리뉴클레오티드로, 상기 변이형 5'UTR을 코딩하는 염기서열을 추가로 포함하는 변이형 폴리뉴클레오티드;를 포함하는 미생물의 PHA 생산 용도.
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JP2023579637A JP2024523575A (ja) | 2021-12-24 | 2022-12-21 | ホスホエノールピルビン酸カルボキシラーゼをコードする遺伝子の5’utr変異配列及びその用途 |
CA3223003A CA3223003A1 (en) | 2021-12-24 | 2022-12-21 | 5'utr variant sequence of gene encoding phosphoenolpyruvate carboxylase, and uses thereof |
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