EP1194565A1 - Genes de corynebacterium glutamicum pour la biosynthese de l'acide folique et leur utilisation pour la production microbienne d'acide folique - Google Patents
Genes de corynebacterium glutamicum pour la biosynthese de l'acide folique et leur utilisation pour la production microbienne d'acide foliqueInfo
- Publication number
- EP1194565A1 EP1194565A1 EP00945815A EP00945815A EP1194565A1 EP 1194565 A1 EP1194565 A1 EP 1194565A1 EP 00945815 A EP00945815 A EP 00945815A EP 00945815 A EP00945815 A EP 00945815A EP 1194565 A1 EP1194565 A1 EP 1194565A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- polypeptide
- folic acid
- seq
- amino acids
- deletion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- OVBPIULPVIDEAO-LBPRGKRZSA-N folic acid Chemical compound C=1N=C2NC(N)=NC(=O)C2=NC=1CNC1=CC=C(C(=O)N[C@@H](CCC(O)=O)C(O)=O)C=C1 OVBPIULPVIDEAO-LBPRGKRZSA-N 0.000 title claims abstract description 67
- OVBPIULPVIDEAO-UHFFFAOYSA-N N-Pteroyl-L-glutaminsaeure Natural products C=1N=C2NC(N)=NC(=O)C2=NC=1CNC1=CC=C(C(=O)NC(CCC(O)=O)C(O)=O)C=C1 OVBPIULPVIDEAO-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 229960000304 folic acid Drugs 0.000 title claims abstract description 32
- 235000019152 folic acid Nutrition 0.000 title claims abstract description 32
- 239000011724 folic acid Substances 0.000 title claims abstract description 32
- 108090000623 proteins and genes Proteins 0.000 title claims abstract description 23
- 241000186226 Corynebacterium glutamicum Species 0.000 title abstract description 10
- 238000004519 manufacturing process Methods 0.000 title abstract description 9
- 230000015572 biosynthetic process Effects 0.000 title abstract description 8
- 230000000813 microbial effect Effects 0.000 title abstract description 7
- 229920001184 polypeptide Polymers 0.000 claims description 31
- 102000004196 processed proteins & peptides Human genes 0.000 claims description 31
- 108090000765 processed proteins & peptides Proteins 0.000 claims description 31
- 150000001413 amino acids Chemical class 0.000 claims description 28
- 108010065780 2-amino-4-hydroxy-6-hydroxymethyldihydropteridine pyrophosphokinase Proteins 0.000 claims description 15
- 238000012217 deletion Methods 0.000 claims description 12
- 230000037430 deletion Effects 0.000 claims description 12
- 238000003780 insertion Methods 0.000 claims description 12
- 230000037431 insertion Effects 0.000 claims description 12
- 238000006467 substitution reaction Methods 0.000 claims description 12
- 108700016256 Dihydropteroate synthases Proteins 0.000 claims description 8
- 108010089355 dihydroneopterin aldolase Proteins 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 7
- 102000036509 GTP Cyclohydrolase Human genes 0.000 claims description 6
- 108010023555 GTP Cyclohydrolase Proteins 0.000 claims description 6
- 108091033319 polynucleotide Proteins 0.000 claims description 6
- 102000040430 polynucleotide Human genes 0.000 claims description 6
- 239000002157 polynucleotide Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 125000003275 alpha amino acid group Chemical group 0.000 claims 4
- 101150011175 folB gene Proteins 0.000 abstract description 6
- 101150075316 folE gene Proteins 0.000 abstract description 6
- 101150045875 folP gene Proteins 0.000 abstract description 6
- 108091028043 Nucleic acid sequence Proteins 0.000 abstract description 5
- 101150095307 folK gene Proteins 0.000 abstract description 5
- 101100227595 Chlamydia pneumoniae folKP gene Proteins 0.000 abstract description 4
- 101100336222 Dictyostelium discoideum gchA gene Proteins 0.000 abstract description 4
- 101100227592 Lactococcus lactis subsp. cremoris (strain MG1363) folKE gene Proteins 0.000 abstract description 4
- 101100063392 Mycobacterium leprae (strain TN) folP1 gene Proteins 0.000 abstract description 4
- 241000588724 Escherichia coli Species 0.000 description 9
- 108020004414 DNA Proteins 0.000 description 8
- 244000005700 microbiome Species 0.000 description 8
- 230000002255 enzymatic effect Effects 0.000 description 4
- 239000002773 nucleotide Substances 0.000 description 4
- 125000003729 nucleotide group Chemical group 0.000 description 4
- 241000186216 Corynebacterium Species 0.000 description 3
- 101100357018 Trypanosoma brucei brucei RNR2 gene Proteins 0.000 description 3
- 230000006696 biosynthetic metabolic pathway Effects 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- 239000012634 fragment Substances 0.000 description 3
- 102000004190 Enzymes Human genes 0.000 description 2
- 108090000790 Enzymes Proteins 0.000 description 2
- 102100027346 GTP cyclohydrolase 1 Human genes 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 2
- 210000004027 cell Anatomy 0.000 description 2
- 238000010367 cloning Methods 0.000 description 2
- 238000012239 gene modification Methods 0.000 description 2
- 230000005017 genetic modification Effects 0.000 description 2
- 235000013617 genetically modified food Nutrition 0.000 description 2
- 150000007523 nucleic acids Chemical group 0.000 description 2
- CPNGPNLZQNNVQM-UHFFFAOYSA-N pteridine Chemical group N1=CN=CC2=NC=CN=C21 CPNGPNLZQNNVQM-UHFFFAOYSA-N 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- MSTNYGQPCMXVAQ-RYUDHWBXSA-N (6S)-5,6,7,8-tetrahydrofolic acid Chemical compound C([C@H]1CNC=2N=C(NC(=O)C=2N1)N)NC1=CC=C(C(=O)N[C@@H](CCC(O)=O)C(O)=O)C=C1 MSTNYGQPCMXVAQ-RYUDHWBXSA-N 0.000 description 1
- ALYNCZNDIQEVRV-UHFFFAOYSA-M 4-aminobenzoate Chemical compound NC1=CC=C(C([O-])=O)C=C1 ALYNCZNDIQEVRV-UHFFFAOYSA-M 0.000 description 1
- 241000193830 Bacillus <bacterium> Species 0.000 description 1
- 241001465321 Eremothecium Species 0.000 description 1
- 206010016880 Folate deficiency Diseases 0.000 description 1
- 208000010188 Folic Acid Deficiency Diseases 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- WHUUTDBJXJRKMK-VKHMYHEASA-N L-glutamic acid Chemical compound OC(=O)[C@@H](N)CCC(O)=O WHUUTDBJXJRKMK-VKHMYHEASA-N 0.000 description 1
- 241000124008 Mammalia Species 0.000 description 1
- 108091034117 Oligonucleotide Proteins 0.000 description 1
- 241000235648 Pichia Species 0.000 description 1
- 241000235070 Saccharomyces Species 0.000 description 1
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 1
- JLCPHMBAVCMARE-UHFFFAOYSA-N [3-[[3-[[3-[[3-[[3-[[3-[[3-[[3-[[3-[[3-[[3-[[5-(2-amino-6-oxo-1H-purin-9-yl)-3-[[3-[[3-[[3-[[3-[[3-[[5-(2-amino-6-oxo-1H-purin-9-yl)-3-[[5-(2-amino-6-oxo-1H-purin-9-yl)-3-hydroxyoxolan-2-yl]methoxy-hydroxyphosphoryl]oxyoxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxyoxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(4-amino-2-oxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(4-amino-2-oxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(4-amino-2-oxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(4-amino-2-oxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(4-amino-2-oxopyrimidin-1-yl)oxolan-2-yl]methyl [5-(6-aminopurin-9-yl)-2-(hydroxymethyl)oxolan-3-yl] hydrogen phosphate Polymers Cc1cn(C2CC(OP(O)(=O)OCC3OC(CC3OP(O)(=O)OCC3OC(CC3O)n3cnc4c3nc(N)[nH]c4=O)n3cnc4c3nc(N)[nH]c4=O)C(COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3CO)n3cnc4c(N)ncnc34)n3ccc(N)nc3=O)n3cnc4c(N)ncnc34)n3ccc(N)nc3=O)n3ccc(N)nc3=O)n3ccc(N)nc3=O)n3cnc4c(N)ncnc34)n3cnc4c(N)ncnc34)n3cc(C)c(=O)[nH]c3=O)n3cc(C)c(=O)[nH]c3=O)n3ccc(N)nc3=O)n3cc(C)c(=O)[nH]c3=O)n3cnc4c3nc(N)[nH]c4=O)n3cnc4c(N)ncnc34)n3cnc4c(N)ncnc34)n3cnc4c(N)ncnc34)n3cnc4c(N)ncnc34)O2)c(=O)[nH]c1=O JLCPHMBAVCMARE-UHFFFAOYSA-N 0.000 description 1
- AVKUERGKIZMTKX-NJBDSQKTSA-N ampicillin Chemical compound C1([C@@H](N)C(=O)N[C@H]2[C@H]3SC([C@@H](N3C2=O)C(O)=O)(C)C)=CC=CC=C1 AVKUERGKIZMTKX-NJBDSQKTSA-N 0.000 description 1
- 229960000723 ampicillin Drugs 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000013599 cloning vector Substances 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 239000003623 enhancer Substances 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 238000012262 fermentative production Methods 0.000 description 1
- 235000013373 food additive Nutrition 0.000 description 1
- 239000002778 food additive Substances 0.000 description 1
- 210000001035 gastrointestinal tract Anatomy 0.000 description 1
- 230000002068 genetic effect Effects 0.000 description 1
- 238000010353 genetic engineering Methods 0.000 description 1
- 235000003869 genetically modified organism Nutrition 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 229930195712 glutamate Natural products 0.000 description 1
- 230000003834 intracellular effect Effects 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 238000010369 molecular cloning Methods 0.000 description 1
- 210000004400 mucous membrane Anatomy 0.000 description 1
- 108020004707 nucleic acids Proteins 0.000 description 1
- 102000039446 nucleic acids Human genes 0.000 description 1
- 239000013612 plasmid Substances 0.000 description 1
- 210000003705 ribosome Anatomy 0.000 description 1
- 238000002741 site-directed mutagenesis Methods 0.000 description 1
- BPILDHPJSYVNAF-UHFFFAOYSA-M sodium;diiodomethanesulfonate Chemical compound [Na+].[O-]S(=O)(=O)C(I)I BPILDHPJSYVNAF-UHFFFAOYSA-M 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 239000005460 tetrahydrofolate Substances 0.000 description 1
- 238000013518 transcription Methods 0.000 description 1
- 230000035897 transcription Effects 0.000 description 1
- 201000008827 tuberculosis Diseases 0.000 description 1
- 239000013598 vector Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/195—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from bacteria
- C07K14/34—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from bacteria from Corynebacterium (G)
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
- C12N9/10—Transferases (2.)
- C12N9/1085—Transferases (2.) transferring alkyl or aryl groups other than methyl groups (2.5)
-
- 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
- C12N9/10—Transferases (2.)
- C12N9/12—Transferases (2.) transferring phosphorus containing groups, e.g. kinases (2.7)
- C12N9/1235—Diphosphotransferases (2.7.6)
-
- 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
- C12N9/14—Hydrolases (3)
- C12N9/78—Hydrolases (3) acting on carbon to nitrogen bonds other than peptide bonds (3.5)
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
- C12N9/88—Lyases (4.)
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P17/00—Preparation of heterocyclic carbon compounds with only O, N, S, Se or Te as ring hetero atoms
- C12P17/18—Preparation of heterocyclic carbon compounds with only O, N, S, Se or Te as ring hetero atoms containing at least two hetero rings condensed among themselves or condensed with a common carbocyclic ring system, e.g. rifamycin
- C12P17/182—Heterocyclic compounds containing nitrogen atoms as the only ring heteroatoms in the condensed system
Definitions
- the present invention relates to the production process for folic acid by fermentation using a genetically modified organism.
- This invention consists of the nucleotide sequences of four genes (folE, folP, folB and folK) from Corynebacterium glutamicum for folic acid biosynthesis and their use for the microbial production of folic acid. These four genes form an operon and are transcribed in the following order: folE, folP, folB, folK.
- Folic acid is essential for animal organisms. Its derivative tetrahydrofolate is a very versatile carrier of activated single-carbon units in cells of the animal organism. Folic acid consists of three groups: a substituted pteridine ring, p-aminobenzoate and glutamate. Mammals cannot synthesize a pteridine ring. They take in folic acid from food and from microorganisms in their intestinal tract. Folic acid deficiency mainly leads to lesions in the mucous membranes.
- Folic acid is mainly used as a food additive.
- Microorganisms can be used for the fermentative production of folic acid. They can be optimized in their folic acid biosynthesis performance by genetically modifying the biosynthetic pathway of folic acid.
- genetic engineering means increasing the number of copies and / or the rate of transcription of the genes of the biosynthetic pathway for folic acid.
- the proportion of gene product and thus also the intracellular enzyme activity increases.
- Increased enzyme activity leads to an increased rate of conversion of food (eg glucose) to folic acid and thus to an increased product concentration.
- the nucleotide sequences of the genes of the folic acid biosynthetic pathway must be identified.
- This invention is concerned with four new gene sequences for the folic acid biosynthesis from Corynebacterium glutamicum and with their use for the microbial production of folic acid.
- Part of the invention is the folE gene product.
- SEQ ID NO. 2 describes a polypeptide sequence.
- the folE gene product encodes a polypeptide of 202 amino acids with a molecular weight of 22029 Da.
- the present invention is also concerned with functional derivatives of this polypeptide, which can be obtained if one in SEQ ID NO. 2 one or more amino acids, preferably up to 25% of the amino acids, preferably up to 15% of the amino acids, are replaced by deletion, insertion or substitution or by a combination of deletion, insertion and substitution.
- the term functional derivative means that the enzymatic activity of the derivative is still in the same order of magnitude as that of the polypeptide with the sequence SEQ ID NO. 2.
- Another part of the invention is the folP gene product.
- SEQ ID NO. 4 describes a polypeptide sequence.
- the folP gene product encodes a polypeptide of 285 amino acids with a molecular weight of 29520 Da.
- the present invention is also concerned with functional derivatives of this polypeptide, which can be obtained if one in SEQ ID NO. 4 one or more amino acids, preferably up to 40% of the amino acids, preferably up to 25% of the amino acids, are replaced by deletion, insertion or substitution or by a combination of deletion, insertion and substitution.
- the term functional derivative means that the enzymatic activity of the derivative is still of the same order of magnitude as that of the polypeptide with the sequence SEQ ID NO. 4th
- SEQ ID NO. 6 describes a polypeptide sequence.
- the folB gene product encodes a polypeptide of 131 amino acids with a molecular weight of 14020 Da.
- the present invention is also concerned with functional derivatives of this polypeptide, which can be obtained if one in SEQ ID NO. 6 one or more amino acids, preferably up to 30% of the amino acids, preferably up to 20% of the amino acids, are replaced by deletion, insertion or substitution or by a combination of deletion, insertion and substitution.
- the term functional derivative means that the enzymatic activity of the derivative is still of the same order of magnitude as that of the polypeptide with the sequence SEQ ID R. 6.
- SEQ ID NO. 8 describes a polypeptide sequence.
- the folK gene product encodes a polypeptide of 160 amino acids with a molecular weight of 18043 Da.
- the present invention is also concerned with functional derivatives of this polypeptide, which can be obtained if one in SEQ ID NO. 8 by deletion, insertion or substitution or by a combination of deletion, Insertion and substitution of one or more amino acids, preferably replacing up to 40% of the amino acids, preferably up to 30% of the amino acids.
- functional derivative it is meant that the enzymatic activity of the derivative is still in the same order of magnitude as that of the polypeptide with the sequence SEQ ID NO. 8th.
- polynucleotide sequences which encode the polypeptides described above.
- the polynucleotide sequences can be generated starting from sequences which are isolated from Corynebacterium glutamicum (ie SEQ ID NO. 1, 3, 5 and 7) by modifying these sequences by site-directed mutagenesis or after back-translating the corresponding polypeptide with genetic code carries out a total chemical synthesis.
- polynucleotide sequences can preferably be used for the transformation of host organisms, and preferably of microorganisms, in the form of gene constructs which contain at least one copy of one of these polynucleotides together with at least one regulatory sequence.
- Regulatory sequences include promoters, terminators, enhancers and ribosomal binding sites.
- Preferred host organisms for the transformation with these gene constructs are Coryneibacterium and Bacillus species. Any eukaryotic microorganism can also be used, preferably yeast strains of the genus Ashbya, Candlda, Plchla, Saccharomyces and Hansenula.
- Another part of the invention consists in the process for the preparation of folic acid by culturing a host organism which is transformed in the manner described above and in the subsequent isolation of the folic acid.
- the trained personnel are familiar with the processes and procedures for cultivating microorganisms and isolating folic acid from a microbial production.
- DNA from the genome of Corynebacterium glutamlcum ATCC 13032 can be obtained by standard methods which have already been described, e.g. B. by J. Altenbuchner and J. Cullum (1984, Mol. Gen. Genet. 195: 134-138).
- the genome library can be prepared according to standard regulations (e.g. Sambrook, J. et al. (1989) Molecular cloning: a laboratory manual, Cold Spring Harbor Laboratory Press) with any cloning vector, e.g. pBluescript II KS- (Stratagene) or ZAP Express TM (Stratagene). Any fragment size can be used, preferably 5'au3AI fragments with a length of 2-9 kb, which can be integrated into cloning vectors with digested BamHI.
- E. coli clones can be selected from the genome library shown in Example 1.
- E. coli cells are cultivated according to standard ancestors in suitable media (e.g. LB supplemented with 100 mg / 1 ampicillin), after which the plasmid DNA can be isolated. If one clones genome fragments from the DNA of Corynebacterium glutamlcum in pBluescript II KS- (see Example 1), the DNA can be sequenced with the help of the oligonucleotides 5 '-AATTAACCCTCACTAAAGGG-3' and 5'-GTAATACGACTCACTATAGGGC-3 '.
- nucleotide sequences can e.g. using the BLASTX algorithm (Altschul et al. (1990) J. Mol. Biol. 215: 403-410). In this way, one can discover new sequences and elucidate the function of these new genes.
- Example 3 The analysis of the E. coli clones, as described in Example 2, which was followed by the analysis of the sequences obtained in Example 3, resulted in a sequence as described with SEQ ID NO. 3 is described.
- this sequence showed similarity to dihydropteroate synthases (FolP; EC 2.5.1.15) from different organisms. The greatest similarity was with the dihydropteroate synthase (FolP) from Mycobacterlum tuberculosls (NRDB 006274; 53% agreement at the amino acid level).
- Example 3 When the E. coli clones were analyzed as described in Example 2, followed by the analysis of the sequences obtained in Example 3, a sequence was obtained as described with SEQ ID NO. 5 is described.
- this sequence showed similarity to dihydroneopterin aldolases (FolB; EC 4.1.2.25) from different organisms. The greatest similarity 5 was with the dihydroneopterin aldolase (FolB) from Mycobacterlum tuberculosis (NRDB 006275; 61% agreement at the amino acid level).
- Example 5 The analysis of the E. coli clones as described in Example 2, which was followed by the analysis of the sequences obtained in Example 3, resulted in one Sequence as shown with SEQ ID NO. 7 is described.
- this sequence showed similarity with 2-amino-4-hydroxy-6-hydroxymethyldihydropteridine pyrophosphokinases (FolK; EC 2.7.6.3) from different organisms. The greatest similarity was with that
- GTP cyclohydrolase I for dihydropteroate synthase, for dihydroneopterin aldolase and for 2-amino-4-hydroxy-6-hydroxymethyldihydropteridine pyrophosphokinase from Corynebacterium glutamicum for the production of folic acid
- the genes for the GTP cyclohydrolase I, for the dihydropteroate synthase, for the dihydroneopterin aldolase and for the 2-amino-4-hydroxy-6-hydroxymethyldihydropteridine pyrophosphokinase from Corynebacterium glutamicum can be obtained with the aid of suitable cloning and expression systems introduce into Corynebacterium glutamicum or into any other microorganism. Genetically modified microorganisms can be produced which differ from the wild-type organism with regard to the activity or the number of gene copies. These new, genetically modified strains can be used to produce folic acid.
- SEQ ID NO. 1 DNA (folE)
- SEQ ID NO. 2 amino acid (FolE)
- SEQ ID NO. 3 DNA (folP)
- SEQ ID NO. 4 amino acid (FolP)
- SEQ ID NO. 6 amino acid (FolB)
- SEQ ID NO. 7 DNA (folK)
- SEQ ID NO. 8 amino acid (FolK)
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Genetics & Genomics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Zoology (AREA)
- Wood Science & Technology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Biochemistry (AREA)
- General Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Biotechnology (AREA)
- Microbiology (AREA)
- Medicinal Chemistry (AREA)
- Biophysics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- General Chemical & Material Sciences (AREA)
- Plant Pathology (AREA)
- Gastroenterology & Hepatology (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
Abstract
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19929363 | 1999-06-25 | ||
| DE19929363A DE19929363A1 (de) | 1999-06-25 | 1999-06-25 | Gene aus Corynebacterium glutamicum für die Folsäurebiosynthese und ihr Einsatz zur mikrobiellen Herstellung von Folsäure |
| PCT/EP2000/005864 WO2001000845A1 (fr) | 1999-06-25 | 2000-06-23 | Genes de corynebacterium glutamicum pour la biosynthese de l'acide folique et leur utilisation pour la production microbienne d'acide folique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1194565A1 true EP1194565A1 (fr) | 2002-04-10 |
Family
ID=7912677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00945815A Withdrawn EP1194565A1 (fr) | 1999-06-25 | 2000-06-23 | Genes de corynebacterium glutamicum pour la biosynthese de l'acide folique et leur utilisation pour la production microbienne d'acide folique |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP1194565A1 (fr) |
| KR (1) | KR20020026469A (fr) |
| CN (1) | CN1371418A (fr) |
| AU (1) | AU5978200A (fr) |
| CA (1) | CA2377458A1 (fr) |
| DE (1) | DE19929363A1 (fr) |
| WO (1) | WO2001000845A1 (fr) |
| ZA (1) | ZA200200582B (fr) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1298854C (zh) | 1999-07-02 | 2007-02-07 | 味之素株式会社 | 编码蔗糖pts酶ⅱ的dna |
| US6958228B2 (en) | 2000-08-02 | 2005-10-25 | Degussa Ag | Nucleotide sequence which code for the metH gene |
| US6942996B2 (en) | 2000-08-02 | 2005-09-13 | Degussa Ag | Isolated polynucleotide from Corynebacterium encoding a homocysteine methyltransferase |
| DE10039049A1 (de) | 2000-08-10 | 2002-02-21 | Degussa | Neue für das IysR3-Gen kodierende Nukleotidsequenzen |
| DE10039044A1 (de) | 2000-08-10 | 2002-02-21 | Degussa | Neue für das IysR1-Gen kodierende Nukleotidsequenzen |
| DE10039043A1 (de) | 2000-08-10 | 2002-02-21 | Degussa | Neue für das luxR-Gen kodierende Nukleotidsequenzen |
| AU2001291658A1 (en) | 2000-08-26 | 2002-03-13 | Degussa A.G. | Nucleotide sequences which code for the ccpa2 gene |
| US6812016B2 (en) | 2000-09-02 | 2004-11-02 | Degussa Ag | Nucleotide sequences which code for the metY gene |
| US6815196B2 (en) | 2000-09-02 | 2004-11-09 | Degussa Ag | Nucleotide sequences encoding o-succinylhomoserine sulfhydrylase |
| WO2002020792A1 (fr) | 2000-09-09 | 2002-03-14 | Degussa Ag | Sequences nucleotidiques codant le gene dep33 |
| US6759224B2 (en) | 2000-09-09 | 2004-07-06 | Degussa Ag | Nucleotide sequences which code for the sahH gene |
| DE10045496A1 (de) | 2000-09-14 | 2002-03-28 | Degussa | Neue für das ptsi-Gen kodierende Nukleotidsequenzen |
| DE10055870A1 (de) | 2000-11-10 | 2002-05-29 | Degussa | Neue für das nadC-Gen kodierende Nukleotidsequenzen |
| DE10055869A1 (de) | 2000-11-10 | 2002-05-29 | Degussa | Neue für das nadA-Gen kodierende Nukleotidsequenzen |
| EP1262541A1 (fr) * | 2001-05-28 | 2002-12-04 | Stichting Top-Instituut Voedselwetenschappen | Production de l'acide folique biodisponible |
| US7468262B2 (en) | 2003-05-16 | 2008-12-23 | Ajinomoto Co., Inc. | Polynucleotides encoding useful polypeptides in corynebacterium glutamicum ssp. lactofermentum |
| CN1952114B (zh) * | 2005-10-20 | 2010-04-14 | 浙江爱迪亚营养科技开发有限公司 | 一种谷氨酸棒杆菌及其应用于制备烟酰胺的方法 |
| CN109810991B (zh) * | 2019-03-02 | 2021-11-12 | 昆明理工大学 | 二氢蝶酸合酶基因folP的用途 |
| CN111235169A (zh) * | 2020-02-03 | 2020-06-05 | 昆明理工大学 | 一种GTP环化水解酶I基因folE及应用 |
| CN112852844A (zh) * | 2021-03-05 | 2021-05-28 | 昆明理工大学 | 羟甲基二氢蝶呤焦磷酸激酶基因folK的用途 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5968788A (en) * | 1995-08-28 | 1999-10-19 | Toray Industries, Inc. | Method for producing folic acid |
-
1999
- 1999-06-25 DE DE19929363A patent/DE19929363A1/de not_active Withdrawn
-
2000
- 2000-06-23 CN CN00812014A patent/CN1371418A/zh active Pending
- 2000-06-23 WO PCT/EP2000/005864 patent/WO2001000845A1/fr not_active Ceased
- 2000-06-23 AU AU59782/00A patent/AU5978200A/en not_active Abandoned
- 2000-06-23 KR KR1020017016565A patent/KR20020026469A/ko not_active Withdrawn
- 2000-06-23 CA CA002377458A patent/CA2377458A1/fr not_active Abandoned
- 2000-06-23 EP EP00945815A patent/EP1194565A1/fr not_active Withdrawn
-
2002
- 2002-01-23 ZA ZA200200582A patent/ZA200200582B/xx unknown
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0100845A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2377458A1 (fr) | 2001-01-04 |
| ZA200200582B (en) | 2003-03-26 |
| KR20020026469A (ko) | 2002-04-10 |
| CN1371418A (zh) | 2002-09-25 |
| DE19929363A1 (de) | 2000-12-28 |
| WO2001000845A1 (fr) | 2001-01-04 |
| AU5978200A (en) | 2001-01-31 |
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