WO2022164226A1 - C-글리코실전이효소 변이체 및 이의 용도 - Google Patents
C-글리코실전이효소 변이체 및 이의 용도 Download PDFInfo
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- WO2022164226A1 WO2022164226A1 PCT/KR2022/001485 KR2022001485W WO2022164226A1 WO 2022164226 A1 WO2022164226 A1 WO 2022164226A1 KR 2022001485 W KR2022001485 W KR 2022001485W WO 2022164226 A1 WO2022164226 A1 WO 2022164226A1
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- WIPO (PCT)
- Prior art keywords
- polyketide
- glycosyltransferase
- recombinant microorganism
- present
- glycoside
- Prior art date
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- C12Y207/07009—UTP-glucose-1-phosphate uridylyltransferase (2.7.7.9), i.e. UDP-glucose-pyrophosphorylase
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- C12Y—ENZYMES
- C12Y207/00—Transferases transferring phosphorus-containing groups (2.7)
- C12Y207/08—Transferases for other substituted phosphate groups (2.7.8)
- C12Y207/08007—Holo-[acyl-carrier-protein] synthase (2.7.8.7)
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- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Y—ENZYMES
- C12Y504/00—Intramolecular transferases (5.4)
- C12Y504/02—Phosphotransferases (phosphomutases) (5.4.2)
- C12Y504/02002—Phosphoglucomutase (5.4.2.2)
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- C12Y—ENZYMES
- C12Y604/00—Ligases forming carbon-carbon bonds (6.4)
- C12Y604/01—Ligases forming carbon-carbon bonds (6.4.1)
- C12Y604/01002—Acetyl-CoA carboxylase (6.4.1.2)
Definitions
- the present invention relates to novel C-glycosyltransferase mutants and uses thereof, and more particularly, amino acids located at the active site of C-glycosyltransferase are mutated so that the glycosylation reaction of substrate carbon is C-glycosyltransferase variants characterized in that they are fortified and to the use of said variants in the production of polyketide glycosides and phenylpropanoid glycosides.
- Polyketide is a class of attractive natural products with various biological effects, and is widely applied in daily life to foods, cosmetics, drugs, and the like.
- a group of enzymes that biosynthesize polyketide are collectively called polyketide biosynthetic enzymes (PKS), which are classified into three types, type I, II, and III, according to the biosynthetic mechanism.
- PKS polyketide biosynthetic enzymes
- macrolide-based polyketides are produced through type I PKS
- aromatic polyketides are mainly produced through types II and III.
- glycosides with significantly improved stability, resistance to hydrolysis, and bioavailability, etc. are preferred compared to non-glycosides through the generation of glycosidic bonds.
- Particularly stable C-glycosidic bonds are chemically more stable than O-glycosidic bonds.
- O-glycosylation of natural products in E. coli Choen, D.; Chen, R.; Xie, K.; Duan, Y.; Dai, J., Production of acetophenone C-glucosides using an engineered C -glycosyltransferase in Escherichia coli. Tetrahedron Lett. 2018, 59 (19), 1875-1878), C-glycosylation has rarely been reported.
- O-glycosylation compared to C-glycosylation in E. coli as well as in the natural world.
- Representative C-glycoside natural products include carminic acid, aloesin, and the like.
- Carminic acid is a widely used red pigment and is used in food, cosmetics and pharmaceuticals. Derived directly from scaly insects such as Cochineal Dactylopius coccus, it is added to foods such as ketchup, strawberry milk and candies, and is added to cosmetics such as eye shadow, nail polish and lipstick.
- cochineal is slow-growing, growing only in limited areas (it can only be grown in hot and dry areas), so it is difficult to increase production capacity, which is a limitation of commercial production.
- the extraction process is also very inefficient, for example, it takes 70,000 female cochineals to produce 1 pound of carminic acid. In this situation, it was necessary to develop a more sustainable method for producing carminic acid.
- Aloecin is extracted from Aloe vera, and is widely used as a whitening agent in the cosmetic industry because of its anti-tyrosinase effect and anti-melanin production effect.
- aloesin since aloesin exhibits anti-inflammatory and anti-radical effects, it can be used as a main ingredient in various drugs or cosmetics.
- the amount of aloesin extracted from the aloe plant is very small, and it is necessary to develop a more efficient and sustainable bio-based production method.
- the demand for C-glycoside natural products is very high, while the supply amount is insufficient, but development of a method capable of effectively producing it is hardly made.
- the enzyme for this is not well known, or efficient production from a microbial cell factory is impossible because of the low conversion efficiency of the enzyme.
- Non-Patent Document 1 Chen, D.; Chen, R.; Xie, K.; Duan, Y.; Dai, J., Production of acetophenone C-glucosides using an engineered C-glycosyltransferase in Escherichia coli. Tetrahedron Lett. 2018, 59 (19), 1875-1878
- the present invention provides a C-glycosyltransferase comprising a mutation in any one or more amino acids selected from the group consisting of F17, V93, V132, Y193, L164 and R322 in C-glycosyltransferase represented by SEQ ID NO: 1 Provides C-glycosyltransferase variants.
- the present invention also provides a nucleic acid encoding the C-glycosyltransferase variant.
- the present invention also provides a recombinant microorganism into which the nucleic acid is introduced.
- the present invention also provides a method for preparing a polyketide glycoside and/or a phenylpropanoid glycoside comprising the steps of:
- the present invention also provides a method for preparing a polyketide glycoside and/or a phenylpropanoid glycoside comprising the steps of:
- Figure 2 shows the production of flavokermesic acid when different metabolic engineering strategies are introduced.
- Type II polyketide biosynthetic enzyme (AntDEFBG from P. luminescens ) and ZhuIJ produced higher concentrations of FK than type III polyketide biosynthetic enzyme (AaPKS5 from Aloe arborescens ) and ZhuIJ.
- Figure 4 shows the original enzymatic reaction of the candidate C-glycosyltransferase and each candidate enzyme for dcII production.
- FIG. 6 shows the results of homology modeling and docking simulation for increasing KA and dcII production: (a) KA production capacity of variants selected through simulation for DnrF. (b) Protein structure simulation results for the most effective DnrF mutant (P217K). (c) dcII production capacity of variants selected through simulation for GtCGT. (d) Protein structure for the most efficacious GtCGT variant (V93Q/Y193F).
- FIG. 7 shows the production of carminic acid from glucose: (a) Carminic acid production under different conditions. (b) Analysis of carminic acid by LC-MS/MS analysis. The upper data is the result of analyzing commercially available carminic acid, and the lower data is the analysis result of a sample containing carminic acid produced in E. coli from glucose. The graphs on the left are extracted ion chromatograms (EIC), and the graphs on the right are the MS/MS fragmentation pattern. (c) Fed-batch fermentation graph for the final strain. Red arrows indicate the time of initiation of gene expression through IPTG, and DCW indicates dry cell weight.
- EIC ion chromatograms
- FIG. 10 shows the test results of the additional GtCGT variant for increasing aloesin production. Additional variants were predicted by analyzing the structural model of the GtCGT variant (V93Q/Y193F).
- FIG. 11 shows the test results of GtCGT additional variants for increasing aloesin production. Additional variants were predicted by performing docking simulation based on the GtCGT variant (V93Q/Y193F).
- Figure 12 shows the production (expressed in % conversion) of several phenylpropanoid C-glucoside by the GtCGT variant (V93Q/Y193F).
- the protein structure was predicted in order to discover C-glycosyltransferase mutants with significantly improved glycosidic bond generation ability compared to the wild-type enzyme, and a mutation candidate group with increased activity was derived through protein structure analysis and computer simulation, Among them, it was possible to select an effective variant capable of enhancing substrate binding and enhancing the glucosylation reaction.
- the present invention relates to a C-glycosyltransferase variant having improved C-glycosylation ability.
- the C-glycosyltransferase which is the template (or wild-type) of the mutant of the present invention, forms a C-glycosidic bond at the carbon of the substrate (eg, compound, protein, etc.) to induce C-glycosylation.
- the substrate eg, compound, protein, etc.
- the C-glycosyltransferase is represented by SEQ ID NO: 1, but is not limited thereto, and should be interpreted to include a protein in which an amino acid residue is conservatively substituted at a specific amino acid residue position.
- C-glycosyl comprising substituting one or more amino acids with amino acids having similar biochemical properties that do not cause loss of biological or biochemical function of C-glycosyltransferase or a variant thereof. It means the modification of the actual transferase.
- a "conservative amino acid substitution” is a substitution in which an amino acid residue is replaced with an amino acid residue having a similar side chain.
- Classes of amino acid residues having similar side chains have been defined in the art and are well known. These classes include amino acids with basic side chains (eg, lysine, arginine, histidine), amino acids with acidic side chains (eg, aspartic acid, glutamic acid), amino acids with uncharged polar side chains (eg glycine) , asparagine, glutamine, serine, threonine, tyrosine, cysteine), amino acids with non-polar side chains (eg, alanine, valine, leucine, isoleucine, proline, phenylalanine, methionine, tryptophan), beta-branched side chains amino acids with aromatic side chains (eg, tyrosine, phenylalanine, tryptophan, histidine) and amino acids with aromatic side chains (eg,
- the C-glycosyltransferase which is the template of the variant of the present invention, has substantially the same functions and/or effects as well as SEQ ID NO: 1, and 40% or more, 50% or more, 60% or more, 70% or more , preferably 80% or more or 85% or more, more preferably 90% or more, 95% or more, most preferably 99% or more amino acid sequence homology with C-glycosyltransferase, recombinant C-glycosyltransferase and fragments thereof.
- fragment refers to a partial fragment from which the parent protein is cleaved, and may be cleaved at the C'-terminus and/or the N'-terminus.
- the fragment means a fragment having substantially the same function and/or effect as the deglycosylated C-glycosyltransferase of the present invention.
- the fragment may include a fragment in which a signal sequence is cleaved from a full-length protein.
- the C-glycosyltransferase may be derived from other strains or other organisms in addition to GtUF6CGT derived from Gentiana triflora represented by SEQ ID NO: 1.
- IroB EnCGT
- coli Nissle Zea mays -derived UGT708A6 (ZmCGT) dual C/O-glycosyltransferase; UGT708C2 (FeCGT) from Fagopyrum esculentum ; MiCGT from Mangifera indica ; OsCGT from Oryza sativa ; Glycine max derived UGT708D1 (GmCGT); GtUF6CGT1 (GtCGT) from Gentiana triflora; It may be Aloe vera -derived AvCGT, preferably Gentiana triflora-derived GtUF6CGT1 (GtCGT) or Zea mays -derived UGT708A6 (ZmCGT) dual C/O-glycosyltransferase, but is not limited thereto.
- the C-glycosyltransferase when a mutant is generated by substituting a part of the amino acid of the wild-type C-glycosyltransferase, the C-glycosyltransferase exhibits a remarkably excellent ability to induce C-glycosylation, and the C-glycosyltransferase is synthesized by polyketide. It was confirmed that C-glycosylated polyketide can be prepared in a remarkable yield when introduced into a recombinant strain for use.
- the C-glycosyltransferase variant is any selected from the group consisting of F17, V93, V132, Y193, L164 and R322 in C-glycosyltransferase represented by SEQ ID NO: 1 It may be characterized by including a mutation in one or more amino acids, and more preferably, it may be characterized by including a mutation in the amino acids of V93 and/or Y193.
- the C-glycosyltransferase variant is any selected from the group consisting of F17, V93, V132, Y193, L164 and R322 in C-glycosyltransferase represented by SEQ ID NO: 1
- it may be characterized by including a mutation in one or more other amino acids.
- the C-glycosyltransferase variant is a C-glycosyltransferase represented by SEQ ID NO: 1, F17, V405, P107, L208, L164, P45, I305, L316, F401 , Y94, N57, Y187, C16, P319, F167, V132, N206, R406, Q386, V129, L125, L194, I95, S215, L184, Y158, L29, L27, F202, H159, S370, H365, V329, M301 , V315, V190, C366, W80, L58, Q210, F312, D61, I207, L363, P196, L106, V93, A394, W314, S155, P88, D99, Y284, E189, G49, H328, E399, T392, F387 , A44, P199, E46, R28, V285, I124, R419, L306,
- the C-glycosyltransferase variant is the C-glycosyltransferase represented by SEQ ID NO: 1, I18, Q20, T50, I95, V290, I323, V22, L29, E46, V48, E51, A mutation may be further included in any one or more amino acids selected from the group consisting of A55, S86, D99, R103, C151, L184, L194, E332 and P385.
- the C-glycosyltransferase variant is in the C-glycosyltransferase represented by SEQ ID NO: 1, from the group consisting of I323, T50, I18, I95, Q20, P385, L194, V48. It may further include a mutation in any one or more selected amino acids.
- the term “variant” refers to a mutation of some amino acid residue in the amino acid sequence of a reference sequence (eg, a normal C-glycosyltransferase sequence, SEQ ID NO: 1), preferably substitution, deletion and/or insertion of an amino acid residue, More preferably, the concept includes not only substitution of amino acid residues, but also substitutions, deletions and/or insertions of such amino acid residues, along with deletion of some amino acid residues at the N-terminus or C-terminus. is used as In one embodiment of the present invention, the variant was prepared by substituting some amino acids of SEQ ID NO: 1, but is not limited thereto.
- the 'mutation' may be characterized in that the substitution of amino acids.
- the C-glycosyltransferase variant is any selected from the group consisting of F17G, V93Q, V132A, Y193F, L164G and R322D in C-glycosyltransferase represented by SEQ ID NO: 1 It may be characterized as comprising one or more amino acid substitutions, more preferably of V93Q and/or Y193F, most preferably of V93Q and Y193F.
- the C-glycosyltransferase variant is any selected from the group consisting of F17G, V93Q, V132A, Y193F, L164G and R322D in C-glycosyltransferase represented by SEQ ID NO: 1
- it may be characterized by further comprising substitution of one or more other amino acids.
- the C-glycosyltransferase variant is C-glycosyltransferase represented by SEQ ID NO: 1
- one or more other amino acid substitutions further comprising can be characterized as
- the substitution of other amino acids that can be further included is a C-glycosyltransferase variant represented by SEQ ID NO: 1 in the C-glycosyltransferase (C-glycosyltransferase), F17G, V405M, P107G, L208G, L164G, P45G, I305A, L316G, F401H, Y94G, N57G, Y187A, C16G, P319G, F167G, V132A, N206E, R406G, Q386H, V129A, L125V, L194A, I95G, S215D, L184G, Y158T, L29A, L27A H159G, S370A, H365G, V329T, M301W, V315A, V190A, C366G, W80Y, L58E, Q210G, F312G, D61G, I207P, L363G, P196G, L
- the substitution of other amino acids that can be further included is I18P, Q20M, T50N, T50Q, T50K, T50R, T50V, I95M, I95T, V290G, V290A in the C-glycosyltransferase represented by SEQ ID NO: 1 , I323S, I323A, I95L, V22A, L29A, E46G, V48G, E51C, A55S, S86V, D99G, R103V, C151G, L184G, L194A, E332P, characterized in that any one or more amino acid substitutions selected from the group consisting of I18A and P385A can be done with
- the substitution of other amino acids that can be further included is, in the C-glycosyltransferase represented by SEQ ID NO: 1, I323S, T50R, T50V, I18P, I95T, Q20M, I323A, P385A, L194A and It may be characterized in that the substitution of any one or more amino acids selected from the group consisting of V48G.
- amino acid mutation may be "amino acid substitution Xn (amino acid substitution Xn)", and in one aspect, it means an amino acid substitution occurring at the amino acid residue X at position n in the amino acid sequence shown in SEQ ID NO: 1, where n is a positive integer and X is an abbreviation for any amino acid residue.
- amino acid substitution V93 means an amino acid substitution occurring at amino acid residue V corresponding to position 93 of the amino acid sequence shown in SEQ ID NO: 1.
- a specific amino acid described with reference to SEQ ID NO: 1 Amino acid residues “corresponding” to residues can generally be obtained by alignment of amino acid sequences under optimized conditions.
- the sequence alignment may be performed by a means understood by those skilled in the art using, for example, BLAST, BLAST-2, ALIGN, NEEDLE or Megalign (DNASTAR) software.
- BLAST BLAST-2
- ALIGN ALIGN
- NEEDLE Megalign
- the amino acid substitutions of the present invention may be non-conserved substitutions.
- Such non-conservative substitutions include, for example, replacing an amino acid residue having a particular side chain size or a particular property (e.g., hydrophilicity) with an amino acid residue having a different side chain size or a different property (e.g., hydrophobicity); It may involve altering amino acid residues of the target protein or polypeptide in a non-conservative manner.
- amino acid substitutions may also be conservative substitutions.
- conserved substitutions are, for example, replacing an amino acid residue having a particular side chain size or particular characteristic (eg, hydrophilicity) with an amino acid residue having the same or similar side chain size or the same or similar characteristic (eg, still hydrophilicity). altering the amino acid residues of the target protein or polypeptide in a conserved manner.
- conserved substitutions generally do not significantly affect the structure or function of the produced protein.
- an amino acid sequence variant, a fragment thereof, or a variant thereof in which one or more amino acids are substituted for a mutation of the fusion protein may include a conserved amino acid substitution that does not significantly change the structure or function of the protein.
- a group of amino acids with non-polar side chains alanine, valine, leucine, isoleucine, proline, phenylalanine, tryptophan and methionine.
- a group of uncharged amino acids with polar side chains glycine, serine, threonine, cysteine, tyrosine, asparagine and glutamine.
- a group of negatively charged amino acids with polar side chains aspartic acid and glutamic acid.
- a group of positively charged basic amino acids lysine, arginine and histidine.
- Proteins, polypeptides and/or amino acid sequences encompassed by the present invention may also be understood to include at least the following ranges: variants or homologs having the same or similar function as the protein or polypeptide.
- the variant may be a protein or polypeptide produced by substitution, deletion or addition of one or more amino acids compared to the amino acid sequence of wild-type C-glycosyltransferase.
- the functional variant may contain substitutions, deletions and/or insertions of at least one amino acid, for example 1-30, 1-20 or 1-10, alternatively, for example 1, 2, 3, 4 , or a protein or polypeptide having an amino acid change by substitution, deletion and/or insertion of 5 amino acids.
- the functional variant may substantially retain the biological properties of the protein or polypeptide prior to change (eg, substitution, deletion or addition).
- the functional variant may retain at least 60%, 70%, 80%, 90% or 100% of the biological activity of the protein or polypeptide prior to alteration.
- the homologue is at least about 80% (eg, at least about 85%, about 90%, about 91%, about 92%, about 93%) with the amino acid sequence of the protein and/or the polypeptide. %, about 94%, about 95%, about 96%, about 97%, about 98%, about 99% or more) sequence homology.
- the homology generally refers to similarity, analogousness or association between two or more sequences.
- Perfect of sequence homology refers to identical nucleic acid bases (eg, A, T, C, G, I) or identical amino acid residues (eg, Ala, Pro, Ser, Thr, Gly, Val, Leu, Ile, Phe, Tyr, Trp, Lys, Arg, His, Asp, Glu, Asn, Gln, Cys and Met) to be calculated by comparing two aligned sequences in a comparison window that determines the number of positions present.
- the number of matching positions is divided by the total number of positions to give the number of matching positions in the comparison window (ie, window size), and the result is multiplied by 100 to give a percentage of sequence homology.
- Alignment to determine percent sequence homology can be performed in a variety of ways known in the art using publicly available computer software such as, for example, BLAST, BLAST-2, ALIGN or Megalign (DNASTAR) software.
- BLAST BLAST-2
- ALIGN ALIGN
- Megalign DNASTAR
- One of ordinary skill in the art can determine appropriate parameters for sequence alignment, including any algorithms necessary to achieve maximal alignment within the full-length sequence being compared or within a region of the target sequence.
- the homology can also be determined by the following methods: FASTA and BLAST.
- the FASTA algorithm is described, for example, in W. R. Pearson and D. J.
- the C-glycosyltransferase mutant may be characterized in that it enhances the glycosylation reaction of the substrate carbon compared to the wild type.
- the mutated amino acid is located at the active site of the enzyme, and the substrate binding force of the mutant through mutation in the amino acid is 10% or more, preferably 20% or more, more preferably than that of the wild type. It may be characterized by an improvement of 50% or more.
- the C-glycosyltransferase mutant of the present invention when used, various polyketide-based compounds (flavokermesic acid, kermesic acid, aloeson (aloesone)) or a phenylpropanoid compound (naringenin, apigenin, or luteolin) as a substrate, regardless of the type of substrate, significantly higher C-glycosylation compared to the wild type It was confirmed that it can be shown. Therefore, the C-glycosyltransferase mutant of the present invention can be used for C-glycosylation of various compounds and proteins as substrates. For example, it may be characterized in that it is used for C-glycosylation of the polyketide-based compound or the phenylpropanoid-based compound, but is not limited thereto.
- polyketide or phenylpropanoid-based compound can be used without limitation, and preferably, as confirmed in one embodiment, flavokermesic acid, kermesic acid acid), aloesone, naringenin, apigenin, or luteolin, but is not limited thereto.
- the substrate is preferably flavokermesic acid or kermesic acid, and the variant is one that glycosylates carbon 2 of the flavokermesic acid. It may be characterized, but is not limited thereto.
- the substrate is preferably aloesone, and the variant may be characterized by glycosylation of carbon 8 of the aloesone, but is not limited thereto.
- the present invention relates to a nucleic acid encoding the C-glycosyltransferase variant.
- the present invention relates to a vector comprising said nucleic acid.
- the present invention relates to a recombinant microorganism into which the nucleic acid is introduced.
- the recombinant microorganism may be characterized in that the nucleic acid is introduced into the host microorganism in the form of a plasmid or is inserted into the genome.
- the recombinant microorganism may be characterized for producing polyketide glycosides and/or phenylpropanoid glycosides, but is not limited thereto.
- the recombinant microorganism may be characterized in that it has the ability to produce polyketide and/or phenylpropanoid as a substrate of the C-glycosyltransferase of the present invention, the polyketide and / or phenylpropanoid may be glycosylated by C-glycosyltransferase expressed by the recombinant microorganism of the present invention to be converted into polyketide glycosides and / or phenylpropanoid glycosides.
- the polyketide is N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl
- actinorhodin actinorhodin, doxorubicin, daunorubicin, oxytetracycline, SEK4, SEK4b, SEK34, SEK15, SEK26, FK506, DMAC, aklavinone, aklavinone Composed of aklanonic acid, epsilon-rhodomycinone, doxycycline, anthramycin, tetracenomycin, carminic acid and frenolicin a type II polyketide selected from the group; and
- aloesin aloenin, barbaloin, 5,7-dihydroxy-2-methylchromone and aloesone It may be characterized as selected from the group consisting of; type III polyketide selected from the group consisting of, but is not limited thereto.
- the phenylpropanoid is N-(2-aminoethyl)-2-aminoethylpropanoid
- actinomycin actinomycin, bacitracin, daptomycin, vancomycin, teixobactin, tyrocidine, gramicidin, z wittermicin A, bleomycin, ciclosporin, pyoverdine, enterobactin, myxochelin A, indigoidine, cyanophycin (cyanophycin), etc.
- non-ribosomal peptide pinocembrin, dihydrokaempferol, eriodictyol, dihydroquercetin, coriferyl alcohol (coniferyl alcohol), silybin ( silybin), isosilybin, silychristin, silinide, 2,3-dehydrosilybin, silydianin, daidzein , genistein, apigenin, luteolin, kaempferol, quercetin, catechin, pelargonidin, cyanidin, drawl Lechin (afzelechin), myricetin, fisetin, galangin, hesperetin, tangeritin, delphinidin, epicatechin, chrysin ( chrysin), resveratrol (resveratrol) and may be characterized as selected from the group consisting of naringenin (naringenin), but is not limited thereto.
- the host microorganism may be characterized in that it has the ability to produce a polyketide glycoside and/or a precursor of a phenylpropanoid glycoside to be produced.
- the precursor of the polyketide glycoside and/or phenylpropanoid glycoside may be polyketide and/or phenylpropanoid, preferably unglycosylated polyketide and/or phenylpropanoid It can be a noid.
- the host microorganism naturally produces a precursor of the polyketide glycoside and/or phenylpropanoid glycoside, or produces a polyketide glycoside and/or a phenylpropanoid glycoside precursor through genetic manipulation. It may be characterized in that it is a recombinant microorganism prepared to do so.
- the recombinant microorganism may be characterized in that the production of nucleotides, preferably NTP-sugar, is enhanced in order to improve the glycosyltransferase conversion rate by the introduced C-glycosyltransferase. .
- the recombinant microorganism of the present invention is UTP-glucose-1-phosphate uridyltransferase (UTP-glucose-1-phosphate uridylyltransferase), phosphoglucomutase (phosphoglucomutase) and / or nucleoside-diphosphate It may be further characterized in that the expression of a gene encoding a kinase (nucleoside-diphosphate kinase) is enhanced, but is not limited thereto.
- the UTP-glucose-1-phosphate uridyltransferase, phosphoglucomutase and / or nucleoside-diphosphate kinase derived from E. coli may be characterized in that the expression of the gene involved in the production of NTP-Sugar is enhanced depending on the host strain.
- naringenin apigenin or luteolin
- the precursors of the various polyketide glycosides and/or phenylpropanoid glycosides described above are clearly known in the art. Therefore, it can be easily selected from it.
- nucleic acid generally refers to an isolated form of nucleotides, deoxyribonucleotides or ribonucleotides isolated from the natural environment or artificially synthesized, or analogs thereof of any length.
- Nucleic acids of the invention can be isolated. For example, it can be produced or synthesized in the following ways: (i) in vitro amplification such as polymerase chain reaction (PCR) amplification, (ii) clonal recombination, (iii) purification, e.g. restriction enzyme fractionation by digestion and gel electrophoresis, or (iv) synthesis, eg chemical synthesis.
- PCR polymerase chain reaction
- purification e.g. restriction enzyme fractionation by digestion and gel electrophoresis
- synthesis eg chemical synthesis.
- the isolated nucleic acid is a nucleic acid molecule produced by recombinant DNA technology.
- the nucleic acid encoding the variant can be prepared by various methods known in the art. Such methods include, but are not limited to, overlap extension PCR using restriction fragment operations or synthetic oligonucleotides. Preparation methods and principles are described in Sambrook et al., Molecular Cloning, A Laboratory Manual, Cold Spring Harbor Laboratory Press, Cold Spring Harbor, NY, 1989; and Auube et al. Current Protocols in Molecular Biology, Greene Publishing and Wiley-Interscience, New York NY, 1993.
- the term "plasmid” may be used interchangeably with a vector, and in general, an inserted nucleic acid is transferred to a host cell (including a host microorganism), and the host cell or microorganism Refers to a nucleic acid molecule capable of self-replication.
- the vector may include a vector mainly used for inserting DNA or RNA into a cell, a vector mainly used for DNA or RNA replication, and a vector mainly used for transcriptional and/or translational expression of DNA or RNA.
- the vector also includes vectors with multiple functions.
- the vector may be a polynucleotide capable of being transcribed and translated into a polypeptide when introduced into a suitable host cell.
- the vector can produce the desired expression product.
- the vector may include one or more of the nucleic acids.
- the vector may contain all nucleic acid molecules necessary to encode the variant. In this case, only one vector is required to obtain the fusion protein of the present application.
- the vector may comprise a nucleic acid molecule encoding a portion of the variant.
- the vector may comprise a nucleic acid molecule for regulating gene expression, for example in the recombinant microorganism. At this time, in order to obtain the recombinant microorganism of the present invention, two or more different vectors may be required.
- the vector may contain other genes such as marker genes that select the vector under appropriate host cells and appropriate conditions.
- the vector may also contain expression control elements that allow the coding region to be properly expressed in an appropriate host.
- control elements are well known to those skilled in the art.
- they may include promoters, ribosome binding sites, enhancers and other control elements that regulate gene transcription or mRNA translation.
- the expression control sequence is a regulatory element.
- the specific structure of the expression control sequence may vary depending on the function of the species or cell type, but generally 5' non-transcriptional sequences involved in transcription and translation initiation, such as TATA boxes, capped sequences, CAAT sequences, etc. and 5' and 3' non-translated sequences.
- a 5' non-transcriptional expression control sequence may comprise a promoter region, and the promoter region may comprise a promoter sequence for transcriptional control of a functionally linked nucleic acid.
- the vector is composed of pET-30a-c(+), pET-22b(+), pCDFDuet-1, pACYCDuet-1, pRSFDuet-1, pBBR1MCS, pSC101, pTac15K, pTrc99A, pCOLADuet-1 and pBR322. It may be selected from the group, but is not limited thereto, and a person skilled in the art will be able to appropriately select and use vectors commonly used in the art in addition to the above-described vectors.
- the terms "host cell”, “cell”, “host microorganism” and “host” may be used interchangeably, and generally, a plasmid or vector comprising or capable of containing a nucleic acid of the present invention or a plasmid or vector of the present invention Refers to an individual cell, cell line, microorganism or cell culture capable of expressing a variant or a protein or polypeptide whose expression is regulated.
- the host cell may comprise progeny of a single host cell. Due to natural, accidental or deliberate mutation, the progeny cell and the original parent cell may not necessarily be completely identical in morphology or genome as long as they are capable of expressing the target protein or polypeptide of the present invention.
- the host cell can be obtained by transfecting the cells in vitro with the vector of the present invention.
- the host cell is preferably a microorganism, for example, E. coli , Rhizobium , Bifidobacterium , Candida , Erwinia , Enterobacter ( Enterobacter , Pasteurella , Mannheimia , Actinobacillus , Aggregatibacter , Xanthomonas , Vibrio , Azotobacter , Acinetobacter , Ralstonia , Agrobacterium , Rhodobacter , Zymomonas , Bacillus , Staphylococcus , Lactococcus Lactococcus ), Streptococcus ), Lactobacillus , Clostridium ), Corynebacterium ), Streptomyces ), Bifidobacterium ( Bifidobacterium ), Cyanobacterium ) and Cyclobacterium ( Cyclobacter
- the present invention relates to a recombinant microorganism for the production of polyketide glycosides or phenylpropanoid glycosides into which a nucleic acid encoding a C-glycosyltransferase variant of the present invention is introduced.
- the polyketide glycoside may be a type I polyketide glycoside, a type II polyketide glycoside, or a type III polyketide glycoside.
- the polyketide is N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl
- actinorhodin actinorhodin, doxorubicin, daunorubicin, oxytetracycline, SEK4, SEK4b, SEK34, SEK15, SEK26, FK506, DMAC, aklavinone, aklavinone Composed of aklanonic acid, epsilon-rhodomycinone, doxycycline, anthramycin, tetracenomycin, carminic acid and frenolicin a type II polyketide selected from the group; and
- aloesin aloenin, barbaloin, 5,7-dihydroxy-2-methylchromone and aloesone It may be characterized as selected from the group consisting of; type III polyketide selected from the group consisting of, but is not limited thereto.
- the recombinant microorganism for the production of the polyketide glycoside or phenylpropanoid glycoside may be characterized in that it produces a precursor of each glycoside.
- the recombinant microorganism may be characterized in that it produces polyketide or phenylpropanoid, which is a precursor of each glycoside.
- the recombinant microorganism for production of the polyketide glycoside or phenylpropanoid glycoside may be characterized in that it produces polyketide polyketide or phenylpropanoid through additional gene introduction.
- Recombinant microorganisms having the ability to synthesize polyketide through gene introduction are, for example, Yang, D., Kim, W.J., Yoo, S.M., Choi, J.H., Ha, S.H., Lee, M.H., and Lee, S. Y. "Repurposing type III polyketide synthase as a malonyl-CoA biosensor for metabolic engineering in bacteria", Proc. Natl. Acad. Sci.
- the recombinant microorganism for the production of the polyketide glycoside or phenylpropanoid glycoside may be additionally characterized in that a polyketide synthase or a phenylpropanoid synthetase is introduced.
- the polyketide synthetase may be, for example, a type I polyketide synthetase, a type II polyketide synthetase, or a type III polyketide synthetase, but is not limited thereto.
- the recombinant microorganism for the production of the polyketide glycoside or phenylpropanoid glycoside does not produce a precursor of each glycoside
- the polyketide glycoside or phenylpropane precursor is added to the culture medium.
- the recombinant microorganism may be characterized in that it is for production of type I polyketide glycosides.
- the recombinant microorganism for production of the type I polyketide glycoside may be characterized in that it produces a precursor of the type I polyketide glycoside.
- the precursor of the type I polyketide glycoside may be rapamycin, lovastatin, erythromycin, rifamycin, and the like, but is not limited thereto.
- the recombinant microorganism for production of the type I polyketide glycoside may be characterized in that it produces a precursor of the type I polyketide glycoside through additional gene introduction.
- the recombinant microorganism for the production of the type I polyketide glycoside is, for example,
- the type I polyketide biosynthetic enzyme can be easily selected from various protein and gene databases.
- a nucleic acid encoding a C-glycosyltransferase variant of the present invention and a type I polyketide biosynthesis enzyme gene; the host microorganism into which it is introduced may be characterized as having an ability to produce coenzyme A, preferably malonyl-CoA or acetyl-CoA.
- the recombinant microorganism may be characterized in that the production of coenzyme A is enhanced.
- the recombinant microorganism may be further characterized in that (ii) expression of the pabA gene is suppressed or attenuated, but is not limited thereto, and a large amount of various coenzyme A known in the art.
- the production strategy can be used to prepare recombinant microorganisms with enhanced production of coenzyme A.
- the recombinant microorganism may be characterized in that the production of nucleotides, preferably NTP-sugar, is enhanced in order to improve the glycosyltransferase conversion rate by the introduced C-glycosyltransferase. .
- the recombinant microorganism is (iii) UTP-glucose-1-phosphate uridyltransferase (UTP-glucose-1-phosphate uridylyltransferase), phosphoglucomutase (phosphoglucomutase) and / or Nucleoside-diphosphate kinase (nucleoside-diphosphate kinase) may be further characterized in that the expression of the encoding gene is enhanced, but is not limited thereto.
- the recombinant microorganism may be characterized in that it is for production of type II polyketide glycosides.
- the type II polyketide glycoside may be characterized as carminic acid, but is not limited thereto.
- the recombinant microorganism for production of the type II polyketide glycoside may be characterized in that it produces a precursor of the type II polyketide glycoside.
- the precursor of the type II polyketide glycoside may be, but is not limited to, flavochermic acid or kermic acid.
- the recombinant microorganism for production of type II polyketide glycoside may be characterized in that it produces a precursor of type II polyketide glycoside through additional gene introduction.
- the recombinant microorganism for production of the type II polyketide glycoside may be characterized in that (i) a gene encoding a type II polyketide biosynthesis enzyme is additionally introduced.
- any one or more genes selected from the group consisting of may be additionally introduced, preferably all of the genes It may be characterized in that it is introduced.
- the type II polyketide which is a substrate of C-glycosyltransferase of the present invention, is obtained from, for example, coenzyme A (Coenzyme A, CoA) such as malonyl-CoA or acetyl-CoA. It can be converted into type II polyketide, which is a substrate of the C-glycosyltransferase of the present invention, by the enzyme encoded by the introduced gene.
- a nucleic acid encoding the C-glycosyltransferase variant; and a type II polyketide biosynthetic enzyme gene or a gene of the above (i) to (v); can do.
- coenzyme A is accumulated through suppression or attenuation of the expression of the pabA gene, and as a result, the synthesis of polyketide, a precursor of the C-glycosyltransferase of the present invention, is improved.
- the recombinant microorganism may be characterized in that the production of coenzyme A is enhanced.
- the recombinant microorganism may be further characterized in that (ii) expression of the pabA gene is suppressed or attenuated, but is not limited thereto, and a large amount of various coenzyme A known in the art.
- the production strategy can be used to prepare recombinant microorganisms with enhanced production of coenzyme A.
- the recombinant microorganism may be characterized in that the production of nucleotides, preferably NTP-sugar, is enhanced in order to improve the glycosyltransferase conversion rate by the introduced C-glycosyltransferase. .
- the recombinant microorganism is (iii) UTP-glucose-1-phosphate uridyltransferase (UTP-glucose-1-phosphate uridylyltransferase), phosphoglucomutase (phosphoglucomutase) and / or Nucleoside-diphosphate kinase (nucleoside-diphosphate kinase) may be further characterized in that the expression of the encoding gene is enhanced, but is not limited thereto.
- the UTP-glucose-1-phosphate uridyltransferase, phosphoglucomutase and / or nucleoside-diphosphate kinase derived from E. coli may be characterized in that the expression of the gene involved in the production of NTP-Sugar is enhanced depending on the host strain.
- the gene encoding the type II polyketide biosynthesis enzyme is antD (ketosynthase), antE (chain-length factor), antF (ACP), antB (phosphopantetheinyl transferase) and antG (malonyl-CoA:ACP malonyltransferase).
- antD ketosynthase
- antE chain-length factor
- antF ACP
- antB phosphopantetheinyl transferase
- antG malonyl-CoA:ACP malonyltransferase
- the aclavineon 12-hydroxylase may be characterized in that the 217th amino acid in the amino acid sequence shown in SEQ ID NO: 2 includes a mutation (P217K) from proline to lysine, but is not limited thereto does not
- the type II polyketide biosynthetic enzyme is derived from P. luminescens ;
- the 4'-phosphopantheinyl transferase is derived from Bacillus subtilis or P. luminescens ;
- the cyclase is Streptomyces sp. origin
- the acetyl-CoA carboxylase is derived from Corynebacterium glutamicum ; and/or
- the aclavineon 12-hydroxylase is derived from Streptomyces peucetius ; it may be characterized in that it is, but is not limited thereto.
- the recombinant microorganism may be characterized in that it is for production of type III polyketide glycosides.
- the type III polyketide glycoside may be characterized as aloesin, but is not limited thereto.
- the recombinant microorganism for production of the type III polyketide glycoside may be characterized in that it produces a precursor of the type III polyketide glycoside.
- the precursor of type III polyketide glycoside may be characterized as aloeson, but is not limited thereto.
- the recombinant microorganism for production of type III polyketide glycoside may be characterized in that it produces a precursor of type III polyketide glycoside through additional gene introduction.
- the recombinant microorganism for the production of type III polyketide glycoside is, for example,
- the type III polyketide biosynthetic enzyme may be an aloesone synthase, but is not limited thereto.
- the aloesone synthetase may be characterized in that it is derived from R. palmatum , but is not limited thereto.
- the type III polyketide (eg, aloeson), which is a substrate of the C-glycosyltransferase of the present invention, is, for example, a coenzyme A such as malonyl-CoA or acetyl-CoA ( Coenzyme A, CoA) can be converted into type III polyketide, which is a substrate of the C-glycosyltransferase of the present invention by the enzyme encoded by the introduced gene.
- a coenzyme A such as malonyl-CoA or acetyl-CoA
- a nucleic acid encoding a C-glycosyltransferase variant; and a type III polyketide biosynthesis enzyme gene; the host microorganism into which it is introduced may be characterized as having an ability to produce coenzyme A, preferably malonyl-CoA or acetyl-CoA.
- the recombinant microorganism may be characterized in that the production of coenzyme A is enhanced.
- the recombinant microorganism may be further characterized in that (ii) expression of the pabA gene is suppressed or attenuated, but is not limited thereto, and a large amount of various coenzyme A known in the art.
- the production strategy can be used to prepare recombinant microorganisms with enhanced production of coenzyme A.
- the recombinant microorganism may be characterized in that the production of nucleotides, preferably NTP-sugar, is enhanced in order to improve the glycosyltransferase conversion rate by the introduced C-glycosyltransferase. .
- the recombinant microorganism is (iii) UTP-glucose-1-phosphate uridyltransferase (UTP-glucose-1-phosphate uridylyltransferase), phosphoglucomutase (phosphoglucomutase) and / or Nucleoside-diphosphate kinase (nucleoside-diphosphate kinase) may be further characterized in that the expression of the encoding gene is enhanced, but is not limited thereto.
- the UTP-glucose-1-phosphate uridyltransferase, phosphoglucomutase and / or nucleoside-diphosphate kinase derived from E. coli may be characterized in that the expression of the gene involved in the production of NTP-Sugar is enhanced depending on the host strain.
- the recombinant microorganism may be characterized in that it is for the production of phenylpropanoid glycosides.
- the phenylpropanoid glycoside may be characterized as vitexin, naringenin-6-C-glucoside or isoorientin, but is not limited thereto.
- the recombinant microorganism for the production of the phenylpropanoid glycoside may be characterized in that it produces a precursor of the phenylpropanoid glycoside.
- the precursor of the phenylpropanoid glycoside may be characterized as apigenin, naringenin, or luteolin, but is not limited thereto.
- the recombinant microorganism for production of the phenylpropanoid glycoside may be characterized in that it produces a precursor of the phenylpropanoid glycoside through additional gene introduction.
- the recombinant microorganism for the production of phenylpropanoid glycoside is, for example,
- Phenylpropanoid is produced by the enzyme encoded by the gene introduced from coenzyme A (Coenzyme A, CoA) such as malonyl-CoA or aromatic-CoA (eg, coumaroyl-CoA) C- of the present invention It can be converted to phenylpropanoid, a substrate of glycosyltransferase.
- coenzyme A Coenzyme A, CoA
- the host microorganism into which the phenylpropanoid biosynthesis enzyme gene is introduced may be characterized in that it has the ability to produce coenzyme A, preferably malonyl-CoA or coumaroyl-CoA.
- the recombinant microorganism may be characterized in that the production of coenzyme A is enhanced.
- the recombinant microorganism may be further characterized in that (ii) expression of the pabA gene is suppressed or attenuated, but is not limited thereto, and a large amount of various coenzyme A known in the art.
- the production strategy can be used to prepare recombinant microorganisms with enhanced production of coenzyme A.
- the recombinant microorganism may be characterized in that the production of nucleotides, preferably NTP-sugar, is enhanced in order to improve the glycosyltransferase conversion rate by the introduced C-glycosyltransferase. .
- the recombinant microorganism is (iii) UTP-glucose-1-phosphate uridyltransferase (UTP-glucose-1-phosphate uridylyltransferase), phosphoglucomutase (phosphoglucomutase) and / or Nucleoside-diphosphate kinase (nucleoside-diphosphate kinase) may be further characterized in that the expression of the encoding gene is enhanced, but is not limited thereto.
- the UTP-glucose-1-phosphate uridyltransferase, phosphoglucomutase and / or nucleoside-diphosphate kinase derived from E. coli may be characterized in that the expression of the gene involved in the production of NTP-Sugar is enhanced depending on the host strain.
- the recombinant microorganism of the present invention is a recombinant microorganism into which a nucleic acid encoding a C-glycosyltransferase of the present invention is introduced,
- UTP-glucose-1-phosphate uridyltransferase UTP-glucose-1-phosphate uridylyltransferase
- phosphoglucomutase and / or nucleoside-diphosphate kinase nucleoside-diphosphate kinase
- Attenuated expression of the pabA gene may be characterized as a recombinant microorganism for the production of carminic acid, in which any one or more genes selected from the group consisting of or in which gene expression is regulated.
- the nucleic acid encoding the C-glycosyltransferase of the present invention is introduced in the recombinant microorganism,
- the nucleic acid encoding the C-glycosyltransferase of the present invention is introduced in the recombinant microorganism,
- UTP-glucose-1-phosphate uridyl transferase UTP-glucose-1-phosphate uridylyltransferase
- phosphoglucomutase phosphoglucomutase
- nucleoside-diphosphate kinase nucleoside-diphosphate kinase encoding It can be characterized as a recombinant microorganism for the production of polyketide glycosides or phenylpropanoid glycosides, in which the expression of genes is enhanced.
- the introduction of a gene means that a foreign gene is introduced into the host microorganism through a means such as a vector, or is directly inserted into the genome of the host microorganism.
- enhancing the expression of a gene means that, when the peptide or protein produced by the gene is not present in the host microorganism, it is artificially expressed in the host microorganism to have the activity or function of the peptide or protein, and the gene is If it is already in the host microorganism, replacing the endogenous promoter that controls the expression of the gene with a strong constitutive promoter, or increasing the copy number of the gene, such as introducing the gene from the outside using a vector having strong replication ability It means to induce overexpression of the gene by using a series of methods or to modify so that the activity or function of a peptide or protein produced by the gene is enhanced compared to the intrinsic activity or function.
- Attenuation of gene expression means mutation, substitution, or deletion of some or all bases of the gene, or introduction of an inhibitor (eg, sRNA, etc.) capable of suppressing the gene expression so that the gene is not expressed.
- an inhibitor eg, sRNA, etc.
- intrinsic activity or function refers to an activity or function possessed by an enzyme, peptide, protein, etc. that the original microorganism has in an unmodified state.
- modified to enhance intrinsic activity or function means that a gene exhibiting activity or function is introduced or the copy number of the gene is increased (eg, expression using a plasmid into which the gene is introduced), the gene
- the activity or function of the microorganism after the manipulation is new compared to the activity of the microorganism before the manipulation, such as deletion of the expression repressor regulatory factor or modification of the expression control sequence, for example, the use of an improved promoter. It means a state that occurs or is increased.
- modified to be weakened compared to intrinsic activity or function means deletion of a gene exhibiting activity or function or inactivation of a gene (eg, substitution with a mutant gene), attenuation of gene expression (eg, , substitution with a weak promoter, introduction of siRNA, gRNA, sRNA, etc., substitution of the start codon from ATG to GTG, etc.), inhibition of the function of the peptide expressed by the gene (e.g., a non-competitive repressor or a competitive repressor) It refers to a state in which the function of the microorganism after the operation is reduced or lost compared to the function of the microorganism before the operation such as addition) is performed.
- replacement of a gene or promoter means removing a conventional gene or promoter and introducing a different gene (eg, a mutant gene, etc.) or a promoter having a different strength.
- the conventional gene or promoter is removed It is a concept encompassing not only deleting the gene or promoter, but also suppressing or reducing its function.
- overexpression refers to expression at a level higher than the level at which the corresponding gene is expressed in cells under normal conditions. This is a concept that includes increasing the expression level through a method of transforming cells.
- vector refers to a DNA preparation containing a DNA sequence operably linked to a suitable regulatory sequence capable of expressing the DNA in a suitable host.
- a vector can be a plasmid, a phage particle or simply a potential genomic insert. Once transformed into an appropriate host, the vector can replicate and function independently of the host genome, or in some cases can be integrated into the genome itself. Since a plasmid is currently the most commonly used form of vector, “plasmid” and “vector” are sometimes used interchangeably in the context of the present invention. For the purposes of the present invention, it is preferred to use a plasmid vector.
- Typical plasmid vectors that can be used for this purpose include (a) a replication initiation point that allows efficient replication to include several to hundreds of plasmid vectors per host cell, and (b) a host cell transformed with the plasmid vector is selected. It has a structure including an antibiotic resistance gene and (c) a restriction enzyme cleavage site into which a foreign DNA fragment can be inserted. Even if an appropriate restriction enzyme cleavage site does not exist, the vector and foreign DNA can be easily ligated by using a synthetic oligonucleotide adapter or linker according to a conventional method. After ligation, the vector must be transformed into an appropriate host cell. Transformation can be easily accomplished using the calcium chloride method or electroporation (Neumann, et al., EMBO J., 1:841, 1982) and the like.
- the promoter of the vector may be constitutive or inducible, and may be further modified for the effect of the present invention.
- the expression vector contains a selectable marker for selecting a host cell containing the vector, and in the case of a replicable expression vector, an origin of replication (Ori).
- Vectors can be self-replicating or integrated into host genomic DNA.
- the gene transferred by being inserted into the vector is irreversibly fused into the genome of the host cell so that the gene expression in the cell is stably maintained for a long period of time.
- a base sequence is "operably linked" when it is placed into a functional relationship with another nucleic acid sequence. It can be a gene and regulatory sequence(s) linked in such a way as to enable gene expression when an appropriate molecule (eg, a transcriptional activation protein) is bound to the regulatory sequence(s).
- an appropriate molecule eg, a transcriptional activation protein
- DNA for a pre-sequence or secretion leader is operably linked to DNA for a polypeptide when expressed as a preprotein that participates in secretion of the polypeptide;
- a promoter or enhancer is operably linked to a coding sequence if it affects the transcription of the sequence; or the ribosome binding site is operably linked to a coding sequence if it affects transcription of the sequence; or the ribosome binding site is operably linked to a coding sequence when positioned to facilitate translation.
- "operably linked” means that the linked DNA sequences are in contact and, in the case of a secretory leader, in contact and in reading frame. However, the enhancer does not need to be in contact. Linking of these sequences is accomplished by ligation (ligation) at convenient restriction enzyme sites. When such a site does not exist, a synthetic oligonucleotide adapter or linker according to a conventional method is used.
- the gene in order to increase the expression level of a transgene in a host cell, the gene must be operably linked to transcriptional and/or translational expression control sequences to function in the selected expression host.
- the expression control sequence and/or the gene is included in a single recombinant vector that includes both a bacterial selection marker and a replication origin. If the host cell is a eukaryotic cell, the recombinant vector must further contain an expression marker useful in the eukaryotic expression host.
- a host cell transformed with the above-described recombinant vector constitutes another aspect of the present invention.
- transformation refers to the introduction of DNA into a host such that the DNA becomes capable of replication either as an extrachromosomal factor or by chromosomal integrity.
- the present invention relates to a method for preparing a polyketide glycoside or phenylpropanoid glycoside comprising the steps of:
- the step (a) is characterized by culturing a recombinant microorganism into which a nucleic acid encoding a C-glycosyltransferase variant is introduced by adding a precursor of a polyketide glycoside or a phenylpropanoid glycoside.
- the recombinant microorganism into which the nucleic acid encoding the C-glycosyltransferase variant of step (a) is introduced is C- It may be characterized in that a nucleic acid encoding a glycosyltransferase variant is introduced, and the host microorganism may be a recombinant microorganism in which the introduction of a foreign gene or gene expression is regulated.
- the recombinant microorganism into which the nucleic acid encoding the C-glycosyltransferase variant is introduced may have the same characteristics as those described in the recombinant microorganism for producing polyketide glycosides and/or phenylpropanoid glycosides of the present invention. have.
- the step (a) may be characterized in that the microorganism is cultured by adding ascorbic acid to the culture medium during culturing, in this case, preferably 0.1 to 1.5 g/L, more preferably It may be characterized by culturing microorganisms by adding 0.2 to 1.0 g/L of ascorbic acid, but is not limited thereto.
- the manufacturing method of the present invention may have features equivalent to those described in the above other aspects within the range understood by those of ordinary skill in the art.
- the present invention provides a method for preparing a polyketide glycoside and/or a phenylpropanoid glycoside comprising the steps of:
- the gene name derived from a specific microorganism is described for the gene introduced in the present invention, the protection scope of the present invention is not limited to the gene name. In the case of introducing a gene derived from another microorganism having a different gene name according to the technical features of the present invention, it is obvious that the recombinant microorganism may also fall within the protection scope of the present invention.
- Flask culture was performed under the following conditions. Colonies were inoculated into 10 mL LB medium supplemented with an appropriate concentration of antibiotics, and cultured at 37°C overnight. After that, the prepared culture solution was passaged into a 250 mL baffle flask containing 50 mL of R/2 medium supplemented with 3 g/L yeast extract, 20 g/L glucose (and 0.45 g/Lascorbic acid if necessary), 30 Cultivation was performed at 200 rpm.
- R/2 medium has the following composition (per liter): 2 g (NH4)2HPO4, 6.75 g KH2PO4, 0.85 g citric acid, 0.7 g MgSO4 7H2O, and 5 ml trace metal solution (TMS) [ 10 g FeSO4 ⁇ 7H2O, 2.25 g ZnSO4 ⁇ 7H2O, 1 g CuSO4 ⁇ 5H2O, 0.5 g MnSO4 ⁇ 5H2O, 0.23 g Na2B4O7 ⁇ 10H2O, 2 g CaCl2 ⁇ 2H2O and 0.1 g (NH4)6Mo7O24 per liter of 5 M HCl] .
- IPTG Isopropyl ⁇ -D-1-thiogalactopyranoside
- the addition solution contained the following components per liter: 650 g glucose, 5 g ascorbic acid, 6 mL TMS, 8 g MgSO 4 7H 2 O.
- the pH was higher than 6.85, the addition solution was automatically added to the fermenter. very manipulated.
- LC-MS/MS analysis was performed through an HPLC Triple Quadrupole Mass Spectrometer (LCMS-8050, Shimadzu) (MRM mode).
- E. coli BAP1 strain E. coli BL21(DE3) (Invitrogen) in which Bacillus subtilis -derived Sfp was introduced into the genome for the activity of exogenous acyl carrier protein (ACP) was described in B. Pfeifer et al. , Science 2001, 291 (5509), 1790-1792 / D. Yang et al., PNAS 2018, 115 (40) 9835-9844) were utilized. After that, to apply Photorhabdus luminescens -derived type II PKS, P.
- E. coli BAP1 strain E. coli BL21(DE3) (Invitrogen) in which Bacillus subtilis -derived Sfp was introduced into the genome for the activity of exogenous acyl carrier protein (ACP) was described in B. Pfeifer et al. , Science 2001, 291 (5509), 1790-1792 / D. Yang et al., PNAS 2018, 115 (40) 9835-
- luminescens -derived antD ketosynthase
- antE chain-length factor
- antF ACP
- antB phosphopantetheinyl transferase
- antG malonyl-CoA:ACP malonyltransferase
- the pDS00 plasmid was constructed as follows. The gene fragment containing the T7 promoter, multiple cloning site (MCS), and T7 terminator from pET-30a(+) was amplified using pET_NheI_DraIII and pET_SpeI_SphI primers, and then treated with SphI and DraIII restriction enzymes to treat the pET-30a(+) plasmid.
- the pDS00 plasmid was constructed by inserting it into the SphI and DraIII sites of Then, antB was amplified from P. luminescence genomic DNA using antB_F primer and antB_R primer and inserted into the HindIII site of pDS00 to construct pDS00-antB plasmid. After digestion with NdeI and EcoRI restriction enzymes, the pDS00-antDEF plasmid was also obtained using NdeI and EcoRI restriction enzymes to obtain an antDEF fragment, and then the two fragments were combined using Gibson assembly to obtain a pDS00-antDEFB plasmid. Then, antG from P.
- luminescence genomic DNA was amplified using antG_F and antG_R primers and inserted into the NdeI and EcoRI sites of pDS00 to construct a pDS00-antG plasmid.
- the pDS00-antDEFBG plasmid was constructed by inserting it into the NheI site of the pDS00-antDEFB plasmid.
- the thus constructed pDS00-zhuIJ was digested with NheI and SpeI restriction enzymes to obtain a zhuIJ fragment, which was inserted into the NheI site of pDS00-antDEFBG to construct pFK.
- the strain in which BAP1 was transformed with pDS00-antDEFBG-zhuIJ produced 88 mg/L of FK from glucose. It was observed that the color of the culture medium was bright red at the beginning of the culture, and then changed to a turbid brown color over time. It is assumed that FK is converted into melanin analogues, etc., and 0.45 g/L of ascorbic acid was added to the medium to prevent melanization of FK, thereby increasing FK production to 154.9 mg/L.
- Increasing the intracellular concentration of malonyl-CoA was also predicted as a way to increase the production of FK, and either overexpressed Corynebacterium glutamicum -derived acetyl-CoA carboxylase (encoded by the accBCD1 gene) or knocked down the pabA gene. As a result, the FK production was increased to 180.3 mg/L in the strain overexpressing accBCD1 ( FIG. 2 ).
- the composition of the R/2 medium is as follows (pH 6.8, per 1 L): 2 g (NH 4 ) 2 HPO 4 , 6.75 g KH 2 PO 4 , 0.85 g citric acid, 0.8 g MgSO 4 .7H 2 O, 5 ml trace metal solution (TMS).
- TMS trace metal solution
- the composition of TMS was as follows (based on 0.1 M HCl, per 1 L): 10 g FeSO 4 .7H 2 O, 2.25 g ZnSO 4 .7H 2 O, 1 g CuSO 4 .5H 2 O, 0.58 g MnSO 4 .
- aklavinone 12-hydroxylase (DnrF) derived from Streptomyces peucetius was predicted to be the enzyme that performs the reaction.
- the dnrF gene was PCR-amplified using the pET30a_frag_F primer and the pET30a_frag_R primer based on the corresponding plasmid, and the pBBR1-T7 plasmid (Kovach, ME; Phillips, RW; Elzer, PH; Roop, RM, II; Peterson, KM, pBBR1MCS: a broad-host-range cloning vector.
- FK to carminic acid can take two biosynthetic pathways, both of which require monooxygenase and C-glycosyltransferase.
- FK can be oxidized to KA or C-glycosylated to dcII.
- D. coccus It was found that the derived DcUGT2 catalyzes the conversion of FK to dcII (or KA to CA) and S. cerevisiae
- activity has been demonstrated in (Kanangara et al., Nat Commun 2017, 8), the enzyme must be glycosylated to have activity, and it also has a transmembrane helix and a signal peptide.
- coli Nissle Zea mays -derived UGT708A6 (ZmCGT) dual C/O-glycosyltransferase; UGT708C2 (FeCGT) from Fagopyrum esculentum ; MiCGT from Mangifera indica ; OsCGT from Oryza sativa ; Glycine max derived UGT708D1 (GmCGT); GtUF6CGT1 (GtCGT) from Gentiana triflora; AvCGT from Aloe vera (Fig. 4).
- pCDF-DcCGT pCDF-MiCGT, pCDF-SfCGT, pCDF-EnCGT, pCDF-OsCGT, pCDF-FeCGT, pCDF-GmCGT, pCDF-AvCGT, pCDF-AvCGT, pCDF-ZmCGT, pCDF-AvCGT
- iroB gene amplified using the iroB_gib_F primer and isoB_gib_R primer from E. coli Nissle genomic DNA all were artificially synthesized and inserted into the NdeI site on the pCDFDuet-1 plasmid using Gibson assembly.
- the galU gene was first amplified from the galU_gib_F and galU_gib_R primers, and then inserted into the EcoRI site on the pBBR1TaC plasmid through Gibson assembly. .
- the pgm gene was amplified from the pgm_gib_F and pgm_gib_R primers and inserted into the KpnI site of the pBBR1TaC-galU plasmid, and the ndk gene was amplified from the ndk_gib_F and ndk_gib_R primers and inserted into the SphI site of the pBBR1-galU-galU-pgm plasmid.
- pgm-ndk is built.
- the Y193F mutation showed the second highest dcII concentration, and after constructing a double mutant to see a synergistic effect between the two mutations (GtCGT V93Q/Y193F ), it was introduced into the FK strain.
- the double mutant produced 0.74 mg CA eq/L of dcII, which is a 5.3-fold increase compared to wild-type GtCGT ( FIG. 6c ).
- Tyr193 amino acid forms a hydrogen bond with the carbonyl group of C10 while preventing Gln93 from forming a hydrogen bond with the hydroxyl group of C6. Therefore, it is predicted that, while replacing Tyr193 with Phe193, hydrogen bonding at C10 was inhibited, thereby improving ligand binding of FK ( FIG. 6d ).
- a mutant library was prepared using the same method, and as a result, the mutation showing the highest KA production was DnrF P217K , and the KA production was increased by about 2.2 times (2.68 mg FK eq/L) ( FIGS. 6a and 6b ) .
- Primers DnrF_P217K_F and DnrF_P217K_R were used to construct the P217K mutant of DnrF.
- Primers GtCGT_V93Q_F and GtCGT_V93Q_F_F_F_FY_FY and GtCGT_Y were used to construct the primers Y193F and GtCGT_Y of GtCGT. .
- the protein sequence of the GtCGTV93Q/Y193F (GtUF6CGT1V93Q/Y193F) mutant constructed in the present invention is as follows:
- the CA strain was constructed by combining the two mutant enzymes.
- the CA strain was constructed by transforming the pFK and pCA (pCDF-dnrF P217K -GtCGT V93Q/Y193F ) plasmids into the BAP1 strain.
- dnrF P217K was amplified through PCR amplification using dnrF_NcoI_F and dnrF_BamHI_R primers from pKA, which was inserted into pdcII as NcoI and BamHI sites to construct pCA.
- Aloecin is a representative cosmetic additive extracted from Aloe vera . Because of its anti-tyrosinase and anti-melanogenesis effects, aloesin is used as a whitening agent in the cosmetic industry, and it is spotlighted as a potential drug or cosmetic raw material because of its anti-inflammatory and anti-radical properties. However, the content of aloesin in the plant was very low, so a more efficient manufacturing method was needed. Aloesin production has been reported through existing papers (D Yang et al., Proc. Natl. Acad. Sci. USA 2018, 115 (40), 9835-9844.).
- the present inventors transformed E. coli BL21(DE3) strain with the following plasmids for aloeson production: pCDF-RpALS, pWAS-anti-pabA, pBBR1-zwf. Therefore, the strain expresses the following genes: RpALS (encoding R. palmatum aloesone synthase), anti-pabA synthesis regulatory sRNA, zwf (encoding E.
- This strain produces 30.9 mg/L of aloeson from glucose.
- RpALS was additionally introduced on a compatible plasmid to increase the production of aloesone.
- RpALS was introduced on the pRSFDuet-1 plasmid with a high copy number RSF origin of replication.
- RpALS was amplified from the previously constructed pCDF-RpALS using ALS_NdeI_F and ALS_NdeI_R primers, and then inserted into the NdeI site on pRSFDuet-1 using Gibson assembly to construct the corresponding plasmid.
- pCDF-GtCGT or pCDF-GtCGT V93Q/Y193F plasmids were transformed onto BL21 (DE3) strains carrying pWAS-anti-pabA pRSF-RpALS, pBBR1-zwf plasmids to test aloesin production.
- flask culture was performed.
- the strain containing GtCGT V93Q/Y193F produced 0.06 ⁇ g/L of aloesin, and succeeded in producing a greater amount of aloesin than the strain containing GtCGT (FIG. 9).
- RpALS was additionally introduced to increase the production of aloesin.
- pCDF-GtCGT V93Q/Y193F instead of introducing pCDF-GtCGT V93Q/Y193F , pCDF-RpALS-GtCGT V93Q/Y193F was constructed.
- RpALS was amplified from pCDF-RpALS using pCDFDuet_F and pCDFDuet_R primers, and NcoI and BamHI sites on pCA plasmid were introduced through Gibson assembly.
- the ALS strain succeeded in producing 0.3 ⁇ g/L of aloesin from glucose.
- the authenticity of the produced aloesin was determined through LC-MS/MS as shown in FIG. 9 .
- the present inventors succeeded in producing aloesin in a state in which even the enzyme was not revealed through the introduction of GtCGT, and the aloesin production ability was remarkably increased through the introduction of GtCGT V93Q/Y193F .
- the GtCGT V93Q/Y193F enzyme mutation can be said to be an enzyme having the ability to produce glycosides throughout polyketide, and the present inventors used GtCGT V93Q/Y193F to construct a mutation that can further increase the aloesin production ability. Based on this, additional mutations were made.
- the present inventors further improved the GtCGT V93Q/Y193F mutant showing activity in the previously developed aromatic polyketide to increase the efficiency of conversion from aloesone to aloesin.
- aloeson a new substrate, was docked on the GtCGT V93Q/Y193F structural model calculated in Example 2.
- mutations expected to increase enzyme activity by forming a more stable bond with aloeson were selected as shown in Table 10.
- a plasmid containing a gene mutation was prepared using the primer pairs shown in Table 11 below.
- the prepared plasmids were transformed on the BL21(DE3) strain together with three plasmids of pWAS-anti-pabA, pRSF-RpALS, and pBBR1-zwf, respectively, and then under the same conditions as in Example 3 using the strains constructed in this way. Flask culture was performed under The concentration of produced aloesin was measured through MRM mode of HPLC Triple Quadrupole Mass Spectrometer (LCMS-8050, Shimadzu) of KAIST Biocore Center.
- a plasmid containing a gene mutation was prepared using the primer pairs shown in Table 13 below.
- the prepared plasmids were transformed on the BL21(DE3) strain together with three plasmids of pWAS-anti-pabA, pRSF-RpALS, and pBBR1-zwf, respectively, and then under the same conditions as in Example 3 using the strains constructed in this way. Flask culture was performed under The concentration of produced aloesin was measured through MRM mode of HPLC Triple Quadrupole Mass Spectrometer (LCMS-8050, Shimadzu) of KAIST Biocore Center.
- a strain transformed with both pCDF-GtCGT V93Q/Y193F and pBBR1-galU-pgm-ndk in E. coli BL21(DE3) was cultured in flask, and cell growth was OD600 When 0.6-0.8 was reached, 1 mM IPTG was administered. At this time, 70 ⁇ M of luteolin, 0.5 mM of naringenin, or 185.2 ⁇ M of apigenin was co-administered, and incubated for an additional 36 hours. The amount of substrate and product was analyzed through LC-MS. Flask culture was carried out in a 250 mL baffle flask containing 50 mL of R/2 medium (including 3 g/L yeast extract, 20 g/L glucose added), and culture was performed at 30°C and 200 rpm.
- R/2 medium including 3 g/L yeast extract, 20 g/L glucose added
- the glucosyltransferase of the present invention also exhibits an activity capable of producing various phenylpropanoid C-glucoside, which means that the enzyme of the present invention can produce various polyketide and phenylpropanoid C-glucoside. Indicates that it is a universal enzyme.
- Each plasmid was constructed by amplifying pCDF-GtCGT and pCDF-GtCGTmut using GtCGT_N_His_IV_F / GtCGT_N_His_IV_R primers and then blunt-end ligation through DpnI treatment and T4 PNK and T4 ligase treatment. After transforming each of the two constructed plasmids on the E. coli BL21 (DE3) strain, seed culture in a test tube containing 10 mL LB was performed until the OD 600 value became 0.8 in a flask containing 500 mL LB 37 Incubated at °C.
- wash buffer 50 mM NaH 2 PO 4 , 0.3 M NaCl, 20 mM imidazole, pH 7.5
- the enzyme was washed with an elution buffer containing 90, 160, 230, and 300 mM imidazole on the lysis buffer. Purified.
- the purified enzyme was buffer exchanged with an enzyme stock solution (50 mM HEPES, 20% glycerol, pH 7.5) using Amicon Ultra-15 Centrifugal Filters (regenerated cellulose, 50,000 NMWL; Merck), and K M and V max values were calculated. In order to do this, it was attempted to convert FK to dcII using a purified enzyme. At this time, UDP-Glo Glycosyltransferase Assay Kit (Promega) was used to determine the degree of reaction.
- This kit enables the measurement of free UDP, which is generated as a by-product of the reaction, in terms of luminescence, so 200 ⁇ L enzyme reaction solution containing 0.1 M enzyme and various concentrations of FK (50 mM HEPES, 0.1 mM UDP-glucose) , 5 mM MgCl 2 , pH 7.5) at 25° C. After reacting for 1 hour, 25 ⁇ L was removed and the amount of extubation was measured using a kit. K M and V max values of GtCGT and GtCGT V93Q/Y193F were calculated by introducing the reaction rate and substrate concentration into the Michaelis-Menten equation and analyzing it through the OriginPro 2019 program.
- the K M value of GtCGT V93Q /Y193F decreased by 19.5% compared to GtCGT, while the V max value of GtCGT V93Q/Y193F increased by 18.2% compared to GtCGT ( FIG. 13 ; Table 15). That is, the V max /K M value of GtCGT V93Q /Y193F was improved by 46.8% compared to GtCGT, indicating that the catalytic efficiency of the GtCGT V93Q/Y193F mutant was improved.
- FK flavokermesic acid
- the C-glycosyltransferase mutant according to the present invention has an improved ability to form glycoside bonds compared to wild-type C-glycosyltransferase, and thus the polyketide group and similar natural products, especially type I, II, and III polyketides, non It can enhance the glycoside production effect of ribosomal peptides, phenylpropanoids and other aromatic natural products. Therefore, the C-glycosyltransferase mutant according to the present invention may be usefully used in the manufacture of drugs, food additives, nutritional supplements, etc. containing C-glycoside compounds that increase through the production of polyketide glycosides of natural products. will be able
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Abstract
Description
Claims (26)
- 서열번호 1로 표시되는 C-글리코실전이효소(C-glycosyltransferase)에서 F17, V93, V132, Y193, L164 및 R322로 구성된 군에서 선택되는 어느 하나 이상의 아미노산에 변이를 포함하는 C-글리코실전이효소 (C-glycosyltransferase) 변이체.
- 제1항에 있어서, 상기 변이체는 서열번호 1로 표시되는 C-글리코실 전이효소에서, 다음으로 구성된 군에서 선택되는 어느 하나 이상의 아미노산에 변이를 추가로 포함하는 C-글리코실전이효소 변이체:F17, V405, P107, L208, L164, P45, I305, L316, F401, Y94, N57, Y187, C16, P319, F167, V132, N206, R406, Q386, V129, L125, L194, I95, S215, L184, Y158, L29, L27, F202, H159, S370, H365, V329, M301, V315, V190, C366, W80, L58, Q210, F312, D61, I207, L363, P196, L106, V93, A394, W314, S155, P88, D99, Y284, E189, G49, H328, E399, T392, F387, A44, P199, E46, R28, V285, I124, R419, L306, Y157, Y200, E373, P191, L214, S376, V15, E332, E51, I417, L98, I323, H161, T383, P127, E309, N84, L313, Q104, T371, N213, G79, L330, N307, K105, L128, A152, I18, N59, W147, S86, L293, E296, S377, L185, K216, F89, S286, F396, F211, Y303, D223, R415, N96, V22, S153, F154, D192, Y193, H195, P201, Y292, 및 R322.
- 제1항에 있어서, 상기 아미노산 변이는 V93 및 Y193 아미노산에 변이를 포함하는 것을 특징으로 하는, C-글리코실전이효소 (C-glycosyltransferase) 변이체.
- 제1항에 있어서, F17G, V93Q, V132A, Y193F, L164G 및 R322D로 구성된 군에서 선택되는 어느 하나 이상의 아미노산 치환을 포함하는 것을 특징으로 하는 C-글리코실전이효소 (C-glycosyltransferase) 변이체.
- 제3항에 있어서, V93Q 및 Y193F 아미노산 치환을 포함하는 것을 특징으로 하는 C-글리코실전이효소 (C-glycosyltransferase) 변이체.
- 제2항에 있어서, 다음으로 구성된 군에서 선택되는 어느 하나 이상의 아미노산 치환을 추가로 포함하는 것을 특징으로 하는 C-글리코실 전이효소 변이체:F17G, V405M, P107G, L208G, L164G, P45G, I305A, L316G, F401H, Y94G, N57G, Y187A, C16G, P319G, F167G, V132A, N206E, R406G, Q386H, V129A, L125V, L194A, I95G, S215D, L184G, Y158T, L29A, L27A, F202S, H159G, S370A, H365G, V329T, M301W, V315A, V190A, C366G, W80Y, L58E, Q210G, F312G, D61G, I207P, L363G, P196G, L106G, V93G, A394G, W314C, S155A, P88D, D99G, Y284H, E189A, G49TH328G, E399D, T392A, F387T, A44G, P199E, E46G, R28G, V285I, I124T, R419A, L306M, Y157T, Y200L, E373A, P201G, P191G, L214A, S376G, V15G, E332P, E51C, I417L, L98G, I323A, H161G, T383C, P127A, E309N, N84S, L313T, Q104D, T371A, N213L, G79S, L330G, N307A, K105G, L128D, A152G, S153G, I18A, N59V, W147F, S86V, L293V, E296D, S377A, L185V, K216R, F89A, S286C, F396L, F211G, Y303A, D223G, R415L, N96A, V22H, V93Q, V93L, S153C, F154L, D192S, Y193F, H195Y, H195L, P201T, Y292H, Y292F, R322D 및 R322A.
- 제4항에 있어서, 다음으로 구성된 군에서 선택되는 어느 하나 이상의 아미노산 치환을 추가로 포함하는 것을 특징으로 하는 C-글리코실 전이효소 변이체:I18P, Q20M, T50N, T50Q, T50K, T50R, T50V, I95M, I95T, V290G, V290A, I323S, I323A, I95L, V22A, L29A, E46G, V48G, E51C, A55S, S86V, D99G, R103V, C151G, L184G, L194A, E332P, I18A 및 P385A.
- 제7항에 있어서, 다음으로 구성된 군에서 선택되는 어느 하나 이상의 아미노산 치환을 추가로 포함하는 것을 특징으로 하는 C-글리코실 전이효소 변이체:I323S, T50R, T50V, I18P, I95T, Q20M, I323A, P385A, L194A 및 V48G.
- 제1항 내지 제8항 중 어느 한 항의 변이체를 암호화하는 핵산.
- 제9항의 핵산이 도입된 재조합 미생물.
- 제10항에 있어서, 상기 재조합 미생물은 UTP-글루코오스-1-포스페이트 우리딜트렌스퍼라아제 (UTP-glucose-1-phosphate uridylyltransferase), 포스포글루코뮤타아제(phosphoglucomutase) 및/또는 뉴클레오시드-디포스페이트 키나제(nucleoside-diphosphate kinase)를 암호화하는 유전자의 발현이 강화되어 있는 것을 특징으로 하는 재조합 미생물.
- 제10항에 있어서, 상기 재조합 미생물은 폴리케타이드 배당체 및/또는 페닐프로파노이드 배당체 생산용인 것을 특징으로 하는 재조합 미생물.
- 제12항에 있어서, 상기 재조합 미생물은 폴리케타이드 합성효소 또는 페닐프로파노이드 합성효소가 추가로 도입된 것을 특징으로 하는 재조합 미생물.
- 제12항에 있어서, 상기 재조합 미생물은 pabA 유전자의 발현이 약화되어 있는 것을 특징으로 하는 재조합 미생물.
- 제12항에 있어서, 상기 폴리케타이드는라파마이신(rapamycin), 로바스타틴(lovastatin), 에리트로마이신(erythromycin), 리파마이신(rifamycin), 아버멕틴(avermectin), 겔다나마이신(geldanamycin), 이버멕틴(ivermectin), 칼리케아마이신(calicheamicin), 에포타일론(epothilone), 트라이아세트산 락톤(triacetic acid lactone) 및 6-메틸살리실산(6-methylsalicylic acid)로 구성된 군에서 선택되는 타입 I 폴리케타이드;액티로노딘(actinorhodin), 독소루비신(doxorubicin), 다우노루비신(daunorubicin), 옥시테트라사이클린(oxytetracycline), SEK4, SEK4b, SEK34, SEK15, SEK26, FK506, DMAC, 아클라비논(aklavinone), 아클라노닉산(aklanonic acid), 엡실론 로도마이시논(epsilon-rhodomycinone), 독시사이클린(doxycycline), 안트라마이신(anthramycin), 테트라세노마이신(tetracenomycin), 카르민산(Carmin acid) 및 프레놀리신(frenolicin)로 구성된 군에서 선택되는 타입 II 폴리케타이드; 및알로에신(aloesin), 알로에닌(aloenin), 바바로인(barbaloin), 5,7-다이하이드록시-2-메틸크로몬(5,7-dihydroxy-2-methylchromone) 및 알로에손(aloesone)로 구성된 군에서 선택되는 타입 III 폴리케타이드;로 구성된 군에서 선택되고,상기 페닐프로파노이드는 액티노마이신(actinomycin), 바키트라신(bacitracin), 답토마이신(daptomycin), 밴코마이신(vancomycin), 테익소박틴(teixobactin), 타이로시딘(tyrocidine), 그라미시딘(gramicidin), 즈위터미신 A(zwittermicin A), 블레오마이신(bleomycin), 시클로스포린(ciclosporin), 피오버딘(pyoverdine), 엔테로박틴(enterobactin), 믹소켈린 A(myxochelin A), 인디고이딘(indigoidine), 사이아노피신(cyanophycin) 등으로 구성된 비리보솜 펩티드, 피노켐브린(pinocembrin), 다이하이드로캄페롤(dihydrokaempferol), 에리오딕티올(eriodictyol), 다이하이드로쿼세틴(dihydroquercetin), 코리페릴알코올(coniferyl alcohol), 실리빈 (silybin), 아이소실리빈 (isosilybin), 실리크리스틴 (silychristin), 실리나이드(silinide), 2,3-디하이드로실리빈(2,3-dehydrosilybin), 실리다이아닌(silydianin), 다이드제인(daidzein), 게니스타인(genistein), 아피게닌(apigenin), 루테올린(luteolin), 캄페롤(kaempferol), 쿼세틴(quercetin), 카테킨(catechin), 페라고니딘(pelargonidin), 시아니딘(cyanidin), 압젤레친(afzelechin), 미리세틴(myricetin), 피세틴(fisetin), 갈랑긴(galangin), 헤스페레틴(hesperetin), 탄제리틴(tangeritin), 델피니딘(delphinidin), 에피카테킨(epicatechin), 크리신(chrysin), 레스베라트롤(resveratrol) 및 나린제닌(naringenin)으로 구성된 군에서 선택되는 것을 특징으로 하는 재조합 미생물.
- 제12항에 있어서,(i) 타입 II 폴리케타이드 생합성 효소를 암호화하는 유전자;(ii) 4'-포스포판테인닐 전이효소 (4'-phosphopantetheinyl transferase)를 암호화하는 유전자;(iii) 사이클라아제(cyclase)를 암호화하는 유전자;(iv) 아세틸-CoA 카르복실화 효소 (acetyl-CoA carboxylase)를 암호화하는 유전자; 및(v) 아클라비네온 12-수산화효소 (aklavinone 12-hydroxylase)를 암호화하는 유전자;로 구성된 군에서 선택되는 어느 하나 이상의 유전자가 도입되고,상기 폴리케타이드 배당체는 카르민산인 것을 특징으로 하는 재조합 미생물.
- 제16항에 있어서, 상기 타입 II 폴리케타이드 생합성 효소를 암호화하는 유전자는 antD (ketosynthase), antE (chain-length factor), antF (ACP), antB (phosphopantetheinyl transferase) 및 antG (malonyl-CoA:ACP malonyltransferase)로 구성된 군에서 선택되는 어느 하나 이상의 유전자 또는 이들의 조합인 것을 특징으로 하는 재조합 미생물.
- 제16항에 있어서, 상기 아클라비네온 12-수산화효소는 서열번호 2로 표시되는 아미노산 서열에서 217번째 아미노산이 프롤린에서 라이신으로의 변이(P217K)를 포함하는 것을 재조합 미생물.
- 제16항에 있어서,상기 타입 II 폴리케타이드 생합성 효소는 P. luminescens 유래;상기 4'-포스포판테인닐 전이효소는 Bacillus subtilis 또는 P. luminescens 유래;상기 사이클라아제는 Streptomyces sp. 유래;상기 아세틸-CoA 카르복실화 효소는 Corynebacterium glutamicum 유래; 및/또는상기 아클라비네온 12-수산화효소는 Streptomyces peucetius 유래;인 것을 특징으로 하는 재조합 미생물.
- 제12항에 있어서,(i) 알로에손 합성효소(aloesone synthase)를 암호화하는 유전자가 도입되어 있고,상기 폴리케타이드 배당체는 알로에신인 것을 특징으로 하는 재조합 미생물.
- 제20항에 있어서,상기 알로에손 합성효소는 R. palmatum 유래인 것을 특징으로 하는 재조합 미생물.
- 다음 단계를 포함하는 폴리케타이드 배당체 및/또는 페닐프로파노이드 배당체의 제조방법:(a) 제10항의 재조합 미생물을 배양하여 폴리케타이드 배당체 및/또는 페닐프로파노이드 배당체를 생성시키는 단계; 및(b) 상기 생성된 폴리케타이드 배당체 및/또는 페닐프로파노이드 배당체를 회수하는 단계.
- 제22항에 있어서, 상기 재조합 미생물은 폴리케타이드 배당체 및/또는 페닐프로파노이드 배당체의 전구체 생산능을 갖는 것을 특징으로 하는 제조방법.
- 제22항에 있어서, 상기 (a) 단계는 제10항의 재조합 미생물을 폴리케타이드 및/또는 페닐프로파노이드가 첨가된 배지에서 배양하는 것을 특징으로 하는 제조방법.
- 제22항에 있어서, 상기 폴리케타이드 배당체는 카르민산이고, 상기 (a)단계는 배양시 배양 배지에 아스코르빈산을 첨가하여 미생물을 배양하는 것을 특징으로 하는 제조방법.
- 다음 단계를 포함하는 폴리케타이드 배당체 및/또는 페닐프로파노이드 배당체의 제조방법:(a) 제1항 내지 제8항 중 어느 한 항의 C-글리코실전이효소 변이체 또는 상기 C-글리코실전이효소 변이체를 발현하는 미생물과 폴리케타이드 및/또는 페닐프로파노이드를 반응시켜 폴리케타이드 배당체 및/또는 페닐프로파노이드 배당체를 생성시키는 단계; 및(b) 상기 생성된 폴리케타이드 배당체 및/또는 페닐프로파노이드 배당체를 회수하는 단계.
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