WO2014021533A1 - 부탄올 생성능이 증강된 재조합 미생물 및 이를 이용한 부탄올 생산 방법 - Google Patents
부탄올 생성능이 증강된 재조합 미생물 및 이를 이용한 부탄올 생산 방법 Download PDFInfo
- Publication number
- WO2014021533A1 WO2014021533A1 PCT/KR2013/001951 KR2013001951W WO2014021533A1 WO 2014021533 A1 WO2014021533 A1 WO 2014021533A1 KR 2013001951 W KR2013001951 W KR 2013001951W WO 2014021533 A1 WO2014021533 A1 WO 2014021533A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- butanol
- pathway
- coei
- butyryl
- converting
- Prior art date
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P7/00—Preparation of oxygen-containing organic compounds
- C12P7/02—Preparation of oxygen-containing organic compounds containing a hydroxy group
- C12P7/04—Preparation of oxygen-containing organic compounds containing a hydroxy group acyclic
- C12P7/16—Butanols
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
- C12N1/20—Bacteria; Culture media therefor
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- 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
-
- 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
- C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
- C12N9/0004—Oxidoreductases (1.)
- C12N9/0006—Oxidoreductases (1.) acting on CH-OH groups as donors (1.1)
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
- C12N9/0004—Oxidoreductases (1.)
- C12N9/0008—Oxidoreductases (1.) acting on the aldehyde or oxo group of donors (1.2)
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
- C12N9/10—Transferases (2.)
- C12N9/1025—Acyltransferases (2.3)
- C12N9/1029—Acyltransferases (2.3) transferring groups other than amino-acyl groups (2.3.1)
-
- 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
- C12N9/10—Transferases (2.)
- C12N9/12—Transferases (2.) transferring phosphorus containing groups, e.g. kinases (2.7)
- C12N9/1217—Phosphotransferases with a carboxyl group as acceptor (2.7.2)
-
- 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
- C12N9/10—Transferases (2.)
- C12N9/13—Transferases (2.) transferring sulfur containing groups (2.8)
-
- 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
- C12P1/00—Preparation of compounds or compositions, not provided for in groups C12P3/00 - C12P39/00, by using microorganisms or enzymes
- C12P1/06—Preparation of compounds or compositions, not provided for in groups C12P3/00 - C12P39/00, by using microorganisms or enzymes by using actinomycetales
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Y—ENZYMES
- C12Y101/00—Oxidoreductases acting on the CH-OH group of donors (1.1)
- C12Y101/01—Oxidoreductases acting on the CH-OH group of donors (1.1) with NAD+ or NADP+ as acceptor (1.1.1)
- C12Y101/01001—Alcohol dehydrogenase (1.1.1.1)
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Y—ENZYMES
- C12Y203/00—Acyltransferases (2.3)
- C12Y203/01—Acyltransferases (2.3) transferring groups other than amino-acyl groups (2.3.1)
- C12Y203/01008—Phosphate acetyltransferase (2.3.1.8)
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Y—ENZYMES
- C12Y207/00—Transferases transferring phosphorus-containing groups (2.7)
- C12Y207/02—Phosphotransferases with a carboxy group as acceptor (2.7.2)
- C12Y207/02007—Butyrate kinase (2.7.2.7)
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Y—ENZYMES
- C12Y208/00—Transferases transferring sulfur-containing groups (2.8)
- C12Y208/03—CoA-transferases (2.8.3)
- C12Y208/03008—Acetate CoA-transferase (2.8.3.8)
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Y—ENZYMES
- C12Y102/00—Oxidoreductases acting on the aldehyde or oxo group of donors (1.2)
- C12Y102/01—Oxidoreductases acting on the aldehyde or oxo group of donors (1.2) with NAD+ or NADP+ as acceptor (1.2.1)
- C12Y102/01003—Aldehyde dehydrogenase (NAD+) (1.2.1.3)
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Definitions
- the present invention relates to a recombinant microorganism having enhanced butanol producing ability and a butanol production method using the same.
- Butanol is an intermediate compound with a wide range of applications, such as cosmetics, perfumes, hormones, hygiene, industrial coatings, paint additives, fibers, plastic monomers, medical supplies, vitamins, antibiotics, and pesticides (Durre, Biotechnol J). , 2: 1525-1534, 2007).
- the conventional method for producing butanol was a method of producing butanol, acetone and ethanol by fermenting sugars with Clostridium strains (Weizmann, US Pat. No. 1,315,585) until the 1980s. Since then, butanol has been synthesized from propylene obtained from petroleum. The oxo process has been widely used. However, the petroleum-based butanol manufacturing process is complicated by using high temperature and high pressure and emits a large amount of hazardous waste and carbon dioxide (Tsuchida et al., Ind. Eng. Chem. Res., 45: 8634, 2006). There is an increasing demand for eco-friendly butanol production through fermentation of microorganisms from renewable resources.
- the wild type Clostridium acetobutylicum ATCC824 strain is known to produce acetone, ethanol and butanol in a mass ratio of about 3: 1: 6 through fermentation, and produces a small amount of acetic acid and butyric acid. do.
- the yield of the wild type strain is about 25%, the final concentration is about 10g / L.
- Microorganisms having an acetyl coei biosynthetic pathway and a butyryl coei biosynthetic pathway, such as Clostridium acetobutylicum are generally known to synthesize acetone, butanol and ethanol by the same route as FIG. Recently, with the development of metabolic technology, efforts have been made to produce butanol more efficiently. Especially, in the case of Clostridium acetobutylicum, researches related to metabolic pathway manipulation have been actively conducted since the genome sequence was recently known.
- the present inventors simultaneously studied pta and buk, genes involved in the production of butyrate and acetate, while studying a microorganism having excellent butanol selectivity, yield, and productivity, and the CtfAB gene encoding coate transferase (CoAT). And simultaneously overexpressing the adhE (alcohol / aldehyde dehydrogenase) gene that converts butyryl coai to butanol to produce recombinant mutant microorganisms, which can produce butanol with high yield, high selectivity and high productivity. Confirmed that the present invention was completed.
- the present invention provides a microorganism having an acetyl coa biosynthetic pathway and a butyryl coa biosynthetic pathway,
- a recombinant microorganism having enhanced butanol producing ability.
- the present invention comprises the steps of culturing the recombinant microorganism of the present invention.
- It provides a method for producing butanol comprising the step of recovering butanol from the culture.
- the recombinant microorganism of the present invention has excellent properties of butanol productivity, yield and butanol selectivity.
- FIG. 1 shows a synthesis route of acetone, butanol and ethanol in a microorganism having an acetyl coei biosynthetic pathway and a butyryl coei biosynthetic pathway.
- Figure 2 shows one embodiment of the recombinant microorganism of the present invention.
- 3 is a pGS1-MCS vector.
- 5 is a pGS1-MCS1 (BglII) vector.
- FIG. 8 is SEQ ID NO: 1
- FIG. 9 is SEQ ID NO.
- the present invention provides a microorganism having an acetyl coa biosynthetic pathway and a butyryl coa biosynthetic pathway,
- Butanol-producing ability for recombinant microorganisms are enhanced.
- the present invention comprises the steps of culturing the recombinant microorganism of the present invention.
- It relates to a method for producing butanol comprising recovering butanol from the culture.
- microorganisms having an acetyl coei biosynthetic pathway and a butyryl coei biosynthetic pathway For microorganisms having an acetyl coei biosynthetic pathway and a butyryl coei biosynthetic pathway,
- microorganisms having an acetyl coei biosynthetic pathway and a butyryl coei biosynthetic pathway For microorganisms having an acetyl coei biosynthetic pathway and a butyryl coei biosynthetic pathway,
- microorganisms having an acetyl coei biosynthetic pathway and a butyryl coei biosynthetic pathway For microorganisms having an acetyl coei biosynthetic pathway and a butyryl coei biosynthetic pathway,
- the recombinant microorganism of the present invention is a gene encoding acetoacetic acid decarboxylase, that is, adc is not deleted.
- Acetyl-CoA biosynthetic pathway of the present invention refers to the pathway by which the acetyl-coay is synthesized from a specific metabolite in the microorganism.
- the acetyl coa biosynthesis pathway of the present invention may be a pathway for synthesizing acetyl coa from pyruvate or a pathway for synthesizing acetyl coa from acetate.
- the pathway by which acetyl coeises are synthesized from acetate can be regulated by CoA-transferase.
- the butyryl coei biosynthetic pathway of the present invention refers to the route by which butyryl coei is synthesized from certain metabolites in a microorganism.
- the butyryl coei biosynthetic pathway of the present invention is a route for synthesizing butyryl CoA from acetyl coA, a route for synthesizing butyryl coei from acetoacetyl CoA or butyrate (butyrate) may be the route through which butyryl coei is synthesized.
- the route by which butyryl coei is synthesized from butyrate can be regulated by coatetransferases.
- the microorganism having the acetyl coei biosynthetic pathway and the butyryl coei biosynthetic pathway of the present invention may be a microorganism having the biosynthetic pathways described above, and is not particularly limited.
- the microorganism of the present invention may be a microorganism having a acetyl-CoA biosynthetic pathway and a butyryl-CoA biosynthetic pathway as a wild type or a recombinant microorganism possessed by genetic recombination.
- the microorganism of the present invention is not limited to Clostridium.
- Biosynthesized acetyl coa may be converted to acetate via acetyl phosphate.
- the pathway can be inhibited by inhibiting the conversion of acetyl coeiles to acetyl-phosphates or the conversion of acetyl-phosphates to acetate. These steps can be inhibited using known methods such as controlling the expression of enzymes that control each step or inhibiting enzyme activity.
- phosphotransacetylase modulates the conversion of acetyl coeiles to acetyl-phosphate, whereby the phosphotransacetylase inhibits the pathway to convert acetyl coa to acetate.
- Inhibition of the phosphotransacetylase can be achieved by inhibition of expression of phosphotransacetylase, inhibition of the enzyme activity of phosphotransacetylase, and the like.
- a gene encoding fortran acetylase or causing mutations (mutations such as mutation, substitution or deletion of some bases or introduction of some bases to suppress the expression of normal genes)
- mutations such as mutation, substitution or deletion of some bases or introduction of some bases to suppress the expression of normal genes
- One skilled in the art may choose appropriate methods to inhibit phosphotransacetylase.
- acetate kinase regulates the conversion of acetyl phosphate to acetate, and by inhibiting the acetate kinase, the pathway for converting acetyl coei to acetate can be inhibited. Inhibition of the acetate kinase may be achieved by inhibition of expression of acetate kinase, inhibition of enzyme activity of acetate kinase, and the like.
- a gene encoding acetate kinase or mutating (mutating, replacing or deleting some bases or introducing some bases to inhibit normal gene expression), or a transcription process
- mutating mutating, replacing or deleting some bases or introducing some bases to inhibit normal gene expression
- a transcription process Those skilled in the art, such as controlling gene expression in the translation process, can choose appropriate methods to inhibit acetate kinases.
- Biosynthesized butyryl coay can be converted to butyrate via Butyryl-phosphate.
- the pathway can be inhibited by inhibiting the conversion of butyryl coei to butyryl-phosphate or the conversion of butyryl-phosphate to butyrate. These steps can be inhibited using known methods such as controlling the expression of enzymes that control each step or inhibiting enzyme activity.
- butyrate kinase regulates the conversion of butyryl phosphate to butyrate, which may inhibit the pathway to convert butyryl coei to butyrate by inhibiting the butyrate kinase.
- Inhibition of the butyrate kinase may be achieved by inhibition of expression of butyrate kinase, inhibition of enzyme activity of butyrate kinase, and the like.
- deletion of buk, a gene encoding butyrate kinase, mutation of the gene (mutations such as mutation, substitution or deletion of some bases or introduction of some bases to suppress normal gene expression, or a transcriptional process)
- mutation of the gene (mutations such as mutation, substitution or deletion of some bases or introduction of some bases to suppress normal gene expression, or a transcriptional process)
- regulation of gene expression in the translation process can be selected to suppress the butyrate kinase.
- phosphobutylbutylase regulates the conversion of butyryl coeilic to butyryl-phosphate, which may be inhibited by inhibiting the phosphobutylbutylase to convert the butyryl coeilic to butyrate.
- the inhibition of phosphobutylbutylase may be achieved by inhibition of expression of phosphobutylbutylase, inhibition of enzymatic activity of phosphobutylbutylase, and the like.
- deletion of ptb, a gene encoding fortran acetylase, or a mutation in the gene may choose appropriate methods to inhibit phosphotransacetylase.
- Coate Transferase regulates the conversion of butyrate to butyryl coei.
- CoA Transferase By increasing the activity of the coatetransferase, a pathway for converting butyrate to butyryl coei may be promoted.
- the increase in the activity of the coate transferase may be achieved by an increase in the expression of coate transferase, an increase in the enzyme activity of the coate transferase.
- ctfAB cftA or ctfB
- Coatetransferases regulate the conversion of acetate to acetyl coeiche.
- a pathway for converting acetate to acetyl coei may be promoted.
- the increase in the activity of the coate transferase may be achieved by an increase in the expression of coate transferase, an increase in the enzyme activity of the coate transferase.
- one of ordinary skill in the art can increase the activity of coatetransferase by selecting an appropriate method such as introduction, amplification, rearrangement, regulation of gene expression in a transcriptional or translational process, such as the introduction of ctfAB, a gene encoding coatetransferase.
- Biosynthesized butyryl coco can be converted to butanol via butanal.
- the pathway can be facilitated by promoting the conversion of butyryl coei to butanal or the conversion of butanal to butanol.
- Each step can be promoted using known methods such as increasing enzyme activity.
- aldehyde / alcohol dehydrogenase regulates the conversion of butyryl coai to butanal and butanol to butanol, but the activity of the aldehyde / alcohol dehydrogenase increases butyryl coei butanol
- the route to conversion can be facilitated.
- the increased activity of the aldehyde / alcohol dehydrogenase may be achieved by the increased expression of the aldehyde / alcohol dehydrogenase, the increased enzyme activity of the aldehyde / alcohol dehydrogenase, and the like.
- introduction amplification, rearrangement, regulation of gene expression in the course of transcription or translation, such as the introduction of adhE, a gene encoding aldehyde / alcohol dehydrogenase
- introduction amplification, rearrangement, regulation of gene expression in the course of transcription or translation
- adhE a gene encoding aldehyde / alcohol dehydrogenase
- Acetoacetate decarboxylase regulates the conversion of acetoacetate to acetone. Therefore, in some cases, adc is deleted by inhibiting acetone production by deleting adc, a gene encoding acetoacetic acid decarboxylase (WO 2009/082148). However, in the recombinant microorganism of the present invention, adc is further deleted. Butanol productivity and yield is significantly lowered if there is a problem. This may be because acetoacetic acid is not converted to acetone and causes cytotoxicity. Therefore, the recombinant microorganism of the present invention does not delete adc, the gene encoding the acetoacetic acid.
- Enhancement of butanol production capacity includes butanol selectivity (the ratio of butanol in the produced ABE), butanol productivity (the amount of butanol produced per unit time), and yield (the amount of ABE produced relative to the amount of carbon source consumed in production). It means to be excellent.
- the enhancement of butanol producing ability means that butanol selectivity is 60% or more, butanol productivity is 1.3 g / L / h or more, and the yield is 28% or more based on the batch culture.
- Butanol production method of the present invention comprises the steps of culturing the recombinant microorganism of the present invention; and recovering butanol from the culture solution.
- the culture may be any method generally used in the production process of alcohol using microorganisms and is not particularly limited.
- the culture method of the present invention may be a liquid culture or a solid culture, and may be a batch culture, a continuous culture or a fed-batch culture, but is not particularly limited, and those skilled in the art may implement the present invention by selecting an appropriate culture method.
- the butanol recovery method may be any method generally used for recovery of bioalcohol, and is not particularly limited.
- the recovering step of the butanol of the present invention may be performed using a separator or distillation.
- the culture of the microorganisms and the recovery of butanol may be performed simultaneously or sequentially.
- microorganisms can be continuously cultured while recovering butanol.
- butanol selectivity the ratio of butanol in the mixed solvent (ABE: acetone, butanol, ethanol) produced
- butanol productivity and yield are calculated as follows It was.
- Butanol selectivity (%): Butanol production (g) / ABE production (g) ⁇ 100
- Butanol productivity (g / L / h): Unit time, amount of butanol produced per unit volume
- ABE productivity (g / L / h): unit time, amount of ABE produced per unit volume
- Clostridium acetobutylicum ATCC824 strains were plated in RCM solid medium and anaerobicly cultured for 48 hours. After obtaining one colony from the smeared solid medium and incubating it for 3 hours in 3 ml of RCM liquid medium, the culture medium was centrifuged to obtain cells, washed with 10 ml Tris buffer, and then Wizard Genomic DNA purification Kit. (Promega, USA) was used to isolate the chromosome of the strain.
- the isolated chromosome was amplified using the primers AdhE1-UP-PstI (SEQ ID NO: 3) and AdhE1-DN-XhoI (SEQ ID NO: 4) using the isolated chromosome as a template.
- 100 ⁇ l of PCR reaction mixture was added 250 ⁇ M of dNTP, primers 20 pmol, 1.5 mM MgCl 2, 10 ⁇ buffer 10 ⁇ l, DNA template 100 ng and pfu polymerase 5 units, and after initial denaturation at 95 ° C. for 5 minutes, followed by 1 at 95 ° C. Denatured for minutes, annealed at 50 ° C. for 1 minute and then polymerized at 72 ° C. for 2 minutes was repeated 25 times.
- the amplified gene was purified on a 1% agarose gel, digested with DNA fragments with PstI and XhoI restriction enzymes, and ligated to the pGS1-MCS vector ( Figure 3) digested with the same restriction enzymes (pGS1-pThlAdhE1 ( Figure 4)).
- pGS1-pThlAdhE1 Figure 4
- ctfAB gene (SEQ ID NO: 2) of Clostridium acetobutylicum ATCC 824 strain using ctfAB-UP-BglII (SEQ ID NO: 5) and ctfAB-DN-EcoRI primer (SEQ ID NO: 6) under the same conditions as described above.
- the amplified gene was purified on a 1% agarose gel, digested with DNA fragments using BglII and EcoRI restriction enzymes, and ligated into a pGS1-MCS1 (BglII) vector (FIG. 5) to complete pGS1-pThlCtfAB (FIG. 6). It was.
- PGS1-pThlAdhE1-ctfAB was prepared using the recombinant plasmids prepared above.
- the ctfAB gene (SEQ ID NO: 2) was amplified using pGS1-pThlCtfAB prepared above as a template using primers CtfAB-UP-XhoI (SEQ ID NO: 7) and E1AB-DN-SalI (SEQ ID NO: 8).
- PCR reaction mixture 100 ⁇ l of PCR reaction mixture was added 250 ⁇ M of dNTP, primers 20 pmol, 1.5 mM MgCl2, 10 ⁇ buffer 10 ⁇ l, DNA template 100ng, pfu polymerase 5 units, and after initial denaturation at 95 °C for 5 minutes, followed by 95 °C Denatured for 1 minute at, annealing for 1 minute at 50 °C and polymerization was repeated 25 times for 1 minute at 72 °C.
- the amplified gene was purified on 1% agarose gel, digested with DNA fragments with XhoI and SalI restriction enzymes, and ligated to the pGS1-pThlAdhE1 vector digested with the same restriction enzymes to prepare pGS1-pThlAdhE1-CtfAB (FIG. 7).
- SEQ ID NOs: 1 and 2 describe the sequences in FIGS. 8 and 9, respectively, and SEQ ID NOs 3 to 8 are shown in Table 1 below.
- the characteristics of the recombinant plasmids are shown in Table 2 below.
- the recombinant plasmids prepared in Experimental Example 1 were introduced into strains in which the organic acid producing genes of Table 3 were deleted to prepare transformed recombinant microorganisms.
- the cell pellet was washed three times with an electroporation buffer solution, and then suspended in 2 ml of the same buffer solution to prepare transformed cells.
- 0.5-2.0 ug of plasmids were added to 500 ⁇ l of the transformed cells, and electroporation was performed using Gene pulser II of Bio-Rad (4mm cuvette, 2.5kV, ⁇ , 25uF) and antibiotics were added. After anaerobic culture in the medium, the transformed strains were prepared (Table 4).
- the plasmids used for transformation were all methylated in the E. coli TOP10 strain transformed with the pAN1 vector prior to electroporation so that they were not affected by the restriction system of the Clostridium strain.
- control group was wild-type C. acetobutylicum ATCC824 (C1), C. acetobutylicum ATCC824 strains (C2 to C4) and C. acetobutylicum ATCC824 ⁇ pta ⁇ buk that deleted the organic acid production genes Strain (C5) into which the expression vector was introduced was used (see Table 6 C1 to C5 strains).
- Butanol and mixed solvents were analyzed by gas chromatography (Agilent, USA) and the analysis conditions are shown in Table 5 below.
- concentration of sugar and organic acid was obtained by centrifuging the culture solution, obtaining a supernatant, and using HPLC and a sugar analyzer.
- HPLC conditions used water containing 0.01 N sulfuric acid as the mobile phase and the flow rate was 0.6ml / min.
- Aminex87H and Aminex87P (Bio-Rad, USA) were used for the column, and the resulting sugar and organic acid were analyzed using a reflective index (RI) detector.
- the # 10 strain was additionally deleted by adc, a gene encoding acetoacetic acid decarboxylase, a gene that synthesizes acetone in the # 9 strain. Produced.
- acetone production decreased and butanol selectivity increased as desired
- butanol production decreased and yield and butanol productivity decreased by 6% and 0.5 times, respectively, when compared to the # 9 strain. This was judged to be because acetoacetic acid could not be converted to acetone, causing cytotoxicity (Table 6).
- Butanol selectivity, butanol productivity and yield in Experimental Example 3 was evaluated for the performance and stability through the continuous culture for the # 9 strain determined to be excellent.
- an incubator for a continuous process was produced.
- a filter of about 150um was mounted, followed by mounting a stirrer and filling 200g of the adsorbent to complete two columns (a and b columns, respectively).
- the inlet and outlet of the column were equipped with a 4-way valve to allow desorption in real time by flowing the elution solvent when the adsorbent in the column was saturated with butanol and mixed solvent in the culture process, and the culture solution was circulated to the second column.
- the flow of the culture was made to be made continuously.
- the circulation direction of the culture solution was circulated from the top of the column but the direction is not a problem.
- # 9 strains having butanol and mixed solvent (ABE) productivity were incubated with the prepared incubator.
- the culture was started by inoculating an incubator with 800 ml of the anaerobic culture in a CGM liquid medium overnight in a reactor containing 3.2 L of CGM liquid medium.
- the seed was cultured by general batch fermentation.
- the butanol concentration was about 7 ⁇ 8g / L after the start of the culture, the culture solution was circulated through the column at a rate of 50ml / min flow rate through the pump.
- the adsorbent was suspended in the medium to form a thin slurry, while the flow of the medium passed through the column without being blocked by the cell flock.
- a path for converting acetylcoei to acetate is inhibited, and a path for converting acetate to acetylcoei and butyryl coei for a microorganism having an acetylcoei biosynthetic pathway and a butyrylcoei biosynthetic pathway It is directed to a recombinant microorganism with enhanced butanol producing ability, which is facilitated by the conversion pathway.
- the present invention also relates to a method for producing butanol using the recombinant microorganism.
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Genetics & Genomics (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Biotechnology (AREA)
- Biomedical Technology (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Biophysics (AREA)
- Plant Pathology (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mycology (AREA)
- Tropical Medicine & Parasitology (AREA)
- Virology (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
Abstract
Description
Claims (13)
- 아세틸 코에이 생합성 경로 및 부티릴 코에이 생합성 경로를 갖는 미생물에 있어서,아세틸 코에이를 아세테이트로 전환하는 경로가 억제되고,아세테이트를 아세틸코에이로 전환하는 경로 및 부티릴 코에이를 부탄올로 전환하는 경로가 촉진된,부탄올 생성능이 증강된 재조합 미생물.
- 제 1항에 있어서,포스포트랜스아세틸라제가 억제됨으로써 아세틸 코에이를 아세테이트로 전환하는 경로가 억제되는 것을 특징으로 하는 재조합 미생물.
- 제 1항 또는 제 2항에 있어서,코에이트랜스퍼라제의 활성이 증가됨으로써 아세테이트를 아세틸코에이로 전환하는 경로가 촉진되는 것을 특징으로 하는 재조합 미생물.
- 제 1항 내지 제 3항 중 어느 한 항에 있어서,알데히드/알코올 디하이드로게나제의 활성이 증가됨으로써 부티릴 코에이를 부탄올로 전환하는 경로가 촉진되는 것을 특징으로 하는 재조합 미생물.
- 제 1항 내지 제 4항 중 어느 한 항에 있어서,부티릴 코에이를 부티레이트로 전환하는 경로가 억제되는 것을 특징으로 하는 재조합 미생물.
- 제 5항에 있어서,부티레이트 키나아제를 억제함으로써 부티릴 코에이를 부티레이트로 전환하는 경로가 억제되는 것을 특징으로 하는 재조합 미생물.
- 제 1항 내지 제 6항 중 어느 한 항에 있어서,부티레이트를 부티릴 코에이로 전환하는 경로가 촉진되는 것을 특징으로 하는 재조합 미생물.
- 제 1항 내지 제 7항 중 어느 한 항에 있어서,포스포트랜스아세틸라제를 코드하는 유전자인 pta 및 부티레이트 키나아제를 코드하는 유전자인 buk 중 적어도 하나가 결실 또는 억제되고코에이트랜스퍼라제를 코드하는 유전자인 ctfAB 및 알데히드/알코올 디하이드로게나제를 코드하는 유전자인 adhE 중 적어도 하나가 도입 또는 발현이 증진되는 것을 특징으로 하는 재조합 미생물.
- 제 1항 내지 제 8항 중 어느 한 항에 있어서,아세토아세트산 탈탄산효소를 코드하는 유전자가 결실되지 않은 것을 특징으로 하는 재조합 미생물.
- 제 1항 내지 제 9항 중 어느 한 항에 있어서,회분식 배양을 기준으로 부탄올 선택도가 60 % 이상인 것을 특징으로 하는 재조합 미생물.
- 제 1항 내지 제 10항 중 어느 한 항에 있어서,회분식 배양을 기준으로 부탄올 생산성이 1.3 g/L/h 이상인 것을 특징으로 하는 재조합 미생물.
- 제 1항 내지 제 11항 중 어느 한 항에 있어서,회분식 배양을 기준으로 수율이 28 % 이상인 것을 특징으로 하는 재조합 미생물.
- 제 1항 내지 제 12항 중 어느 한 항의 재조합 미생물을 배양하는 단계;및상기 배양액으로부터 부탄올을 회수하는 단계를 포함하는 부탄올의 생산 방법.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR112015001834-3A BR112015001834B1 (pt) | 2012-07-30 | 2013-03-11 | Micro-organismo recombinante tendo uma capacidade melhorada para produzir butanol e método para produzir butanol usando o mesmo |
CA2880181A CA2880181C (en) | 2012-07-30 | 2013-03-11 | Recombinant microorganism having enhanced butanol producing ability and method for producing butanol using the same |
US14/418,401 US9567613B2 (en) | 2012-07-30 | 2013-03-11 | Recombinant microorganism having enhanced butanol producing ability and method for producing butanol using the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020120083547A KR101406066B1 (ko) | 2012-07-30 | 2012-07-30 | 부탄올 생성능이 증강된 재조합 미생물 및 이를 이용한 부탄올 생산 방법 |
KR10-2012-0083547 | 2012-07-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014021533A1 true WO2014021533A1 (ko) | 2014-02-06 |
Family
ID=50028177
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2013/001951 WO2014021533A1 (ko) | 2012-07-30 | 2013-03-11 | 부탄올 생성능이 증강된 재조합 미생물 및 이를 이용한 부탄올 생산 방법 |
Country Status (6)
Country | Link |
---|---|
US (1) | US9567613B2 (ko) |
KR (1) | KR101406066B1 (ko) |
BR (1) | BR112015001834B1 (ko) |
CA (1) | CA2880181C (ko) |
MY (1) | MY173384A (ko) |
WO (1) | WO2014021533A1 (ko) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101548480B1 (ko) | 2015-02-11 | 2015-08-31 | 지에스칼텍스 주식회사 | 혼합당 동시발효능을 갖는 미생물 및 이를 이용한 부탄올의 생산 방법 |
EP4085146A1 (en) | 2020-02-21 | 2022-11-09 | Braskem, S.A. | Production of ethanol with one or more co-products in yeast |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20080077080A (ko) * | 2007-02-08 | 2008-08-21 | 바이오퓨얼켐 주식회사 | Butyryl-CoA를 중간체로 하여 부탄올을 생합성하는 능력을가지는 효모를 이용하여 부탄올을 제조하는 방법 |
US20090047718A1 (en) * | 2007-05-17 | 2009-02-19 | Blaschek Hans P | Methods and compositions for producing solvents |
WO2009082148A2 (en) * | 2007-12-20 | 2009-07-02 | Korea Advanced Institute Of Science And Technology | Enhanced ethanol and butanol producing microorganisms and method for preparing ethanol and butanol using the same |
KR20110033089A (ko) * | 2009-09-22 | 2011-03-30 | 한국과학기술원 | 부탄올 생성능이 증가된 재조합 미생물 및 이를 이용한 부탄올의 제조방법 |
KR20110033087A (ko) * | 2009-09-22 | 2011-03-30 | 한국과학기술원 | 부탄올, 에탄올 및 이소프로판올 생성능이 증가된 재조합 변이 미생물 및 이를 이용한 부탄올, 에탄올 및 이소프로판올의 제조방법 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1315585A (en) | 1919-09-09 | Charles weizmann | ||
WO2011037414A2 (ko) * | 2009-09-22 | 2011-03-31 | 한국과학기술원 | 알코올 생성능이 증가된 재조합 변이 미생물 및 이를 이용한 알코올의 제조방법 |
WO2012045022A2 (en) * | 2010-10-01 | 2012-04-05 | The Ohio State University | Metabolic engineering of clostridium tyrobutyricum for butanol production |
-
2012
- 2012-07-30 KR KR1020120083547A patent/KR101406066B1/ko active IP Right Grant
-
2013
- 2013-03-11 BR BR112015001834-3A patent/BR112015001834B1/pt active IP Right Grant
- 2013-03-11 MY MYPI2015700219A patent/MY173384A/en unknown
- 2013-03-11 US US14/418,401 patent/US9567613B2/en active Active
- 2013-03-11 CA CA2880181A patent/CA2880181C/en active Active
- 2013-03-11 WO PCT/KR2013/001951 patent/WO2014021533A1/ko active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20080077080A (ko) * | 2007-02-08 | 2008-08-21 | 바이오퓨얼켐 주식회사 | Butyryl-CoA를 중간체로 하여 부탄올을 생합성하는 능력을가지는 효모를 이용하여 부탄올을 제조하는 방법 |
US20090047718A1 (en) * | 2007-05-17 | 2009-02-19 | Blaschek Hans P | Methods and compositions for producing solvents |
WO2009082148A2 (en) * | 2007-12-20 | 2009-07-02 | Korea Advanced Institute Of Science And Technology | Enhanced ethanol and butanol producing microorganisms and method for preparing ethanol and butanol using the same |
KR20110033089A (ko) * | 2009-09-22 | 2011-03-30 | 한국과학기술원 | 부탄올 생성능이 증가된 재조합 미생물 및 이를 이용한 부탄올의 제조방법 |
KR20110033087A (ko) * | 2009-09-22 | 2011-03-30 | 한국과학기술원 | 부탄올, 에탄올 및 이소프로판올 생성능이 증가된 재조합 변이 미생물 및 이를 이용한 부탄올, 에탄올 및 이소프로판올의 제조방법 |
Also Published As
Publication number | Publication date |
---|---|
KR101406066B1 (ko) | 2014-06-20 |
BR112015001834A2 (ko) | 2019-12-31 |
CA2880181C (en) | 2018-06-19 |
KR20140032519A (ko) | 2014-03-17 |
BR112015001834B1 (pt) | 2021-07-27 |
US20150299740A1 (en) | 2015-10-22 |
MY173384A (en) | 2020-01-21 |
US9567613B2 (en) | 2017-02-14 |
CA2880181A1 (en) | 2014-02-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR101444968B1 (ko) | 높은 수율로 n-부탄올을 생물학적으로 생산하는 방법 | |
JP6014042B2 (ja) | 組換え微生物による一酸化炭素からのブタノールの産生 | |
US20090042265A1 (en) | Thermophilic Microorganisms with Inactivated Lactate Dehydrogenase Gene (LDH) for Ethanol Production | |
US9284580B2 (en) | Metabolic engineering of clostridium tyrobutyricum for butanol production | |
KR20090090319A (ko) | 높은 수율로 글리세롤로부터 1,3-프로판디올을 생물학적으로 생산하는 방법 | |
EP1948813A2 (en) | Thermophilic organisms for conversion of lignocellulosic biomass to ethanol | |
WO2012141542A2 (ko) | 미생물 발효를 통해 제조된 생성물을 흡착제를 이용하여 분리 정제하는 장치 및 방법 | |
CN114395575B (zh) | 一种生产丁酸丁酯的酪丁酸梭菌重组菌株及其构建方法和应用 | |
WO2014081084A1 (ko) | 부탄올 생성능이 증강된 재조합 미생물 및 이를 이용한 부탄올 생산 방법 | |
WO2014021533A1 (ko) | 부탄올 생성능이 증강된 재조합 미생물 및 이를 이용한 부탄올 생산 방법 | |
Walter et al. | Host-plasmid interactions in recombinant strains of Clostridium acetobutylicum ATCC 824 | |
CN102533720B (zh) | 一种提高天然产溶剂梭菌发酵产物中总溶剂转化率的方法 | |
EP2084287A2 (en) | Process for the biological production of n-butanol with high yield | |
WO2017074063A1 (ko) | 중쇄 아미노카르복시산의 생산 방법 | |
WO2017074061A1 (ko) | 중쇄 디올의 생산 방법 | |
Wanga et al. | Supporting Information for Engineering Clostridium saccharoperbutylacetonicum for high level Isopropanol-Butanol-Ethanol (IBE) production from acetic acid pretreated switchgrass using the CRISPR-Cas9 system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 13826469 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2880181 Country of ref document: CA |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14418401 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 13826469 Country of ref document: EP Kind code of ref document: A1 |
|
REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112015001834 Country of ref document: BR |
|
ENP | Entry into the national phase |
Ref document number: 112015001834 Country of ref document: BR Kind code of ref document: A2 Effective date: 20150127 |
|
REG | Reference to national code |
Ref country code: BR Ref legal event code: B01E Ref document number: 112015001834 Country of ref document: BR Kind code of ref document: A2 Free format text: APRESENTE A TRADUCAO SIMPLES DA FOLHA DE ROSTO DA CERTIDAO DE DEPOSITO DA PRIORIDADE KR 10-2012-0083547; OU DECLARACAO DE QUE OS DADOS DO PEDIDO INTERNACIONAL ESTAO FIELMENTE CONTIDOS NA PRIORIDADE REIVINDICADA, CONTENDO TODOS OS DADOS IDENTIFICADORES DESTA (TITULARES, NUMERO DE REGISTRO, DATA E TITULO), CONFORME O PARAGRAFO UNICO DO ART. 25 DA RESOLUCAO 77/2013. CABE SALIENTAR QUE NAO FOI POSSIVEL IDENTIFICAR OS TITULARES DO PEDIDO PRIORITARIO NOS DOCUMENTOS JUNTADOS AO PROCESSO, TAMPOUCO NOS APRESENTADOS NA OMPI, POIS SE ENCONTRAM EM COREANO. |
|
ENP | Entry into the national phase |
Ref document number: 112015001834 Country of ref document: BR Kind code of ref document: A2 Effective date: 20150127 |