WO2006054500A1 - メチル化カテキン生合成酵素をコードする遺伝子 - Google Patents
メチル化カテキン生合成酵素をコードする遺伝子 Download PDFInfo
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- WO2006054500A1 WO2006054500A1 PCT/JP2005/020793 JP2005020793W WO2006054500A1 WO 2006054500 A1 WO2006054500 A1 WO 2006054500A1 JP 2005020793 W JP2005020793 W JP 2005020793W WO 2006054500 A1 WO2006054500 A1 WO 2006054500A1
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- chemical
- gallate
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- 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
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- 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.)
- C12N9/1003—Transferases (2.) transferring one-carbon groups (2.1)
- C12N9/1007—Methyltransferases (general) (2.1.1.)
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- 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
- C12P17/02—Oxygen as only ring hetero atoms
- C12P17/06—Oxygen as only ring hetero atoms containing a six-membered hetero ring, e.g. fluorescein
Definitions
- the present invention relates to a methyli-catechin biosynthetic enzyme gene that biosynthesizes methyl-pure catechin using epigallocatechin-3-0-gallate, epicatechin-3-0-gallate or an isomer thereof as a substrate.
- the present invention relates to a method for producing tekin.
- R to R represent a hydrogen atom or a methyl group, and at least one of R to R is a cate group.
- Epoxylocatechin 3-O-gallate derivative represented by the general formula ( ⁇ )
- Epigalocatechin 1-O-gallate (hereinafter sometimes abbreviated as “EGCG”) represented by the formula [1] is known to have an antiallergic action (Non-patent Document 2).
- epi gallocatechin 3—O— (3—O-methyl) galate epicatechin 1—O— (3-0-methyl) gallate is known to be a catechin with higher antiallergic activity.
- Patent Document 1 Non-Patent Document 1
- Patent Document 2 As methods for methylating EGCG, there are methods described in Non-patent Document 3, Patent Document 2, and Patent Document 3, all of which are based on chemical synthesis / modification methods and are represented by the following formula: It was very difficult to specifically methylate the hydroxyl groups at the 3-, 4-, and 5-positions
- Patent Document 1 Japanese Patent Laid-Open No. 2000-159670
- Patent Document 2 JP-A-61-145177
- Patent Document 3 JP 2002-255810 A Patent Document 1: Sano M, Suzuki M, Miyase T, Yoshino K, Maeda— Yamamoto M: J. Agric. FoodChem., 47 (5), 1906-1910 (1999)
- Non-patent document 2 Matsuo, N. et al., Allergy 1997, 52, p58-64)
- Non-Patent Document 3 J. Biochem. 55, p205 (1964)
- the problem to be solved by the present invention is that a methylated catechin biosynthetic enzyme gene capable of efficiently biosynthesizing methyli-repulsive protein having high antiallergic activity, a plasmid containing the gene, and a trait with the plasmid
- An object of the present invention is to provide a converted organism, a method for producing methyli ⁇ catechin biosynthesis enzyme using the organism, and a method for producing methyli ⁇ catechin using the methylated catechin biosynthesis enzyme obtained by the production method.
- the present inventors firstly isolated a methyl potato catechin synthase gene from "Benifuuki” which is a tea leaf containing methyl potato catechin, and transforms this gene into Escherichia coli. As a result, methyli catechin synthase was obtained. That is, the present invention relates to the following.
- R to R represent a hydrogen atom or a methyl group, and at least one of R to R is a methyl group
- Epoxylocatechin 3-O-gallate derivative represented by the general formula ( ⁇ )
- R to R are the same as defined above, and at least one of R to R represents a methyl group
- R to R represent a hydrogen atom or a methyl group, and at least one of R to R is a cate group.
- Epoxylocatechin 3-O-gallate derivative represented by the general formula ( ⁇ )
- R to R are the same as defined above, and at least one of R to R represents a methyl group
- R to R represent a hydrogen atom or a methyl group, and at least one of R to R is a methyl group
- Epoxylocatechin 3-O-gallate derivative represented by the general formula ( ⁇ )
- Epicatechin-3-0-gallate derivatives represented by the following and their isomerism: A gene encoding a biosynthetic enzyme capable of exerting the biosynthetic activity of at least one selected methyl catechin.
- the transformed organism according to (5) is a plant cell, plant tissue or plant. Transformant.
- R to R represent a hydrogen atom or a methyl group, and at least one of R to R represents a methyl group.
- Epoxylocatechin 3-O-gallate derivative represented by the general formula ( ⁇ )
- Epicatechin-3-0-gallate represented by the general formula (I), wherein the methyli-catechin biosynthetic enzyme is reacted with at least one selected from the group consisting of gallate and isomers thereof as a substrate
- R to R represent a hydrogen atom or a methyl group, and at least one of R to R represents a methyl group.
- Epoxylocatechin 3-O-gallate derivative represented by the general formula ( ⁇ )
- At least one of 1 to R represents a methyl group
- the methyl-i-catechin biosynthetic enzyme produced by the methyl-i-catechin biosynthetic enzyme gene of the present invention uses anti-allergy, anti-cancer, anti-obesity, arteriosclerosis prevention, blood pressure using force techins such as EGCG as a substrate It is possible to efficiently produce methylated catechins that are highly resistant to elevation and antibacterial.
- FIG. 1 is a diagram showing an electrophoretic image (SDS-PAGE) of an induced enzyme.
- Lane a first molecular weight
- lane b before expression induction
- lane c after expression induction
- the methylated catechin in the present invention means a compound represented by the general formula (I)
- Epoxylocatechin 3-O-gallate derivative represented by the general formula ( ⁇ ) [0058] [Chemical 20]
- Epicatechin-3-0-gallate derivatives represented by and their isomer power means at least one selected.
- methylated catechin in the present invention include, for example, epicarocatechin.
- methylicatechin biosynthetic enzymes are epigallocatechin 3-O-gallate, epicatechin 3-O-gallate and isomers thereof.
- methylicatechin biosynthetic enzymes are epigallocatechin 3-O-gallate, epicatechin 3-O-gallate and isomers thereof.
- As a substrate it is an enzyme that biosynthesizes at least one selected from the general formula (1), the general formula (II) and isomers thereof.
- the gene for the methyl ⁇ catechin biosynthetic enzyme is a plant containing a flavonoid substance, preferably tea, and more preferably "Blue Heart Large Ban", “Benihonare”, “Benifuji” Tea varieties containing methyl potato catechins such as “Benifuuki” also extract total RNA and degenerate A gene fragment that is a candidate for the target gene may be obtained by RT-PCR using primers.
- the gene encoding the methylated catechin biosynthetic enzyme in the present invention includes at least one base sequence selected from the base sequence group represented by SEQ ID NOs: 1, 3, and 5.
- the gene of the present invention has at least 70% homology with at least one base sequence selected from the base sequence group represented by SEQ ID NOs: 1, 3, and 5 and is capable of producing methyl catechin catechins. It may be a gene encoding a biosynthetic enzyme capable of exerting synthetic activity. It should be noted that even if it has a homology of 70% or less, it may be a gene that can exert the biosynthesis activity of methyl catechin.
- the candidate gene fragment only needs to be a vector capable of determining the base sequence for cloning into a vector.
- a pUC vector, a pGEM vector, or the like can be used.
- the form of the force vector is characterized in that it contains either the DNA of this gene or the RNA molecule encoding it!
- the full-length gene can be obtained by determining the nucleotide sequence of the obtained gene fragment and performing the RACE-PCR method based on the sequence.
- this gene is incorporated into an expression vector, and the vector may be a vector capable of protein expression.
- a pET vector or a pQE vector can be used, which is characterized in that it contains either the DNA of this gene or the RNA molecule that encodes it!
- a protein expression vector can express a protein by introducing it into an expressible host.
- a plant cell, plant tissue, plant or microorganism can be transformed as a host into which a vector containing this gene is introduced.
- the microorganism into which E. coli (Escherichia coli), yeast, Bacillus subtilis (genus Bacillus), or mold can be considered is characterized in that the enzyme-introducing host is capable of obtaining an enzyme activity for biosynthesizing methyl-tungsten.
- the methylated catechin biosynthetic enzyme of the present invention encoded by at least one base sequence selected from the base sequence group represented by SEQ ID NOs: 1, 3, and 5 is represented by SEQ ID NOs: 2, 4, and 6.
- the amino acid sequence group strength also has at least one selected amino acid sequence.
- the transformant thus obtained is cultured under the optimum conditions for each organism.
- the expression vector introduced into the transformant is of the type induced by IPTG
- the target enzyme protein can be produced by adding IPTG to the medium during culture.
- amino acid sequence group power represented by SEQ ID NOs: 2, 4, and 6 is an amino acid in which one or more amino acid residues are inserted, added, deleted or substituted in at least one selected amino acid sequence.
- it may be a gene encoding an enzyme capable of exhibiting an enzyme activity for biosynthesizing methyl-repulsive force.
- the organism used for the transformant either a type that produces the target enzyme in the microbial cell or a type that releases it outside the microbial cell can be used, but a type that releases the enzyme outside the microbial cell is preferably used.
- the target crude enzyme can be obtained by removing the cells by centrifugation or the like.
- the target crude enzyme can be obtained by treating the microbial cell with an ultrasonic lysing enzyme or the like and crushing the microbial cell. The obtained crude enzyme can be used as it is in the methyl cocoon reaction, but it is desirable to purify it as necessary, such as molecular weight fractionation.
- the purified enzyme protein is suspended in a buffer solution having a pH of 4.5 to 8.5, preferably 6.5 to 8, and then added to EtjCtj ECtj 3 ⁇ 4- adenosyl- L-
- Methyl catechin can be obtained in the reaction liquid by adding methionine (SAM) and reacting at 5 to 60 ° C, preferably 20 to 40 ° C.
- SAM methionine
- RNA was extracted after grinding “Benifuuki” tea lg in liquid nitrogen. Next, the following degenerate primers were designed and RT-PCR was performed using 2 ⁇ g of total RNA: o
- the confirmed amplified band was recovered from the agarose gel, cloned into the pGEM-T vector (Promega), and then transformed into Escherichia coli JM-109 (Takara). did.
- the obtained JM-109 strain was cultured with shaking in LB medium at 37 ° C overnight, the plasmid was extracted, and the base sequence of the insert was confirmed.
- the pGEM-T vector having the enzyme protein gene as an insert was treated with restriction enzymes Ndel and BamHI attached to the primer during RT-PCR, and the insert was recovered by agarose electrophoresis.
- the pET28a (+) vector (Novagen) was similarly treated with Ndel and BamHI, and after gel electrophoresis, the gel force vector was recovered.
- the insert was cloned into the Ndel and BamHI sites of the pET28a (+) vector, and then transformed into E. coli BL21 (DE3) strain (STRATA GENE)
- the obtained BL2KDE3) strain was cultured with shaking in LB medium at 37 ° C overnight, and part of it was transferred again to fresh LB medium. After incubation, IPTG was added to a final concentration of ImM, and 28 ° C. so The enzyme protein expression was induced by shaking culture. Centrifuge the expression-induced E. coli (7,000rpm X 10min, 4 ° C), and remove the precipitate in ImM
- SAM S-adenosvl-L-methionine
- the reaction was carried out at 30 ° C for 1 hour, 200 ⁇ 1 IN HC1 was added to stop the reaction, 8 ml of ethyl acetate was added, the mixture was shaken, and the organic layer was recovered by centrifugation (3000 g, 5 min).
- epicarocatechin- 3-0-(3-O-methyl) gallate After adding 1% ascorbic acid of 200 1 and concentrating with suction, epicarocatechin- 3-0-(3-O-methyl) gallate, epicarocatechin 1- O- (4- O-methyl) ) Galate, Epigalocatechin-3—0— (3,5—O Dimethinole) Galate, Epigalocatechin-3—O— (3,4-O-dimethyl) gallate, Epicatechin 1—O— (3— O-methyl) gallate, epicatechin 3-O- (4 O-methinole) gallate, epicatechin 3-O- (3, 5-O dimethinole) gallate, epicatechin 3-O- (3, 4 O dimethyl) gallate, Epoxy (3-0-methyl) gallocatechin-3-0-gallate production was measured.
- the methyl catechin biosynthetic enzyme produced by the methylated catechin biosynthetic enzyme gene of the present invention can efficiently produce a methylating power tekin excellent in antiallergy using a power techin such as EGCG as a substrate. Therefore, the present invention is extremely useful.
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05806065A EP1813674B1 (en) | 2004-11-17 | 2005-11-14 | Gene encoding methylated catechin synthase |
US11/667,590 US7879586B2 (en) | 2004-11-17 | 2005-11-14 | Gene encoding methylated catechin synthase |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-333290 | 2004-11-17 | ||
JP2004333290A JP2006141242A (ja) | 2004-11-17 | 2004-11-17 | メチル化カテキン生合成酵素をコードする遺伝子 |
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WO2006054500A1 true WO2006054500A1 (ja) | 2006-05-26 |
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PCT/JP2005/020793 WO2006054500A1 (ja) | 2004-11-17 | 2005-11-14 | メチル化カテキン生合成酵素をコードする遺伝子 |
Country Status (5)
Country | Link |
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US (1) | US7879586B2 (ja) |
EP (1) | EP1813674B1 (ja) |
JP (1) | JP2006141242A (ja) |
CN (1) | CN101061222A (ja) |
WO (1) | WO2006054500A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008096586A1 (ja) * | 2007-02-07 | 2008-08-14 | Incorporated Administrative Agency National Agriculture And Food Research Organization | 新規なメチル化カテキン及びそれを含む組成 |
WO2010067599A1 (ja) * | 2008-12-09 | 2010-06-17 | 静岡県公立大学法人 | アルキル化カテキンの効率的製造方法 |
CN110885893A (zh) * | 2019-09-04 | 2020-03-17 | 广东省农业科学院茶叶研究所 | 一种位于wd-重复蛋白基因上与茶树表儿茶素含量连锁的分子标记位点及其应用 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JP5763521B2 (ja) * | 2009-03-02 | 2015-08-12 | アサヒグループホールディングス株式会社 | メチルトランスフェラーゼ酵素 |
JP5714809B2 (ja) * | 2009-06-24 | 2015-05-07 | アサヒ飲料株式会社 | 茶エキスの製造方法、茶粉末の製造方法及び茶エキス又は茶粉末に含まれるカテキン中のメチル化カテキンの濃度を高める方法。 |
JP5852866B2 (ja) * | 2011-12-01 | 2016-02-03 | 森永製菓株式会社 | ポリフェノールのメチル化方法、及びそれを用いたメチル化ポリフェノールの製造方法 |
CN103864745B (zh) * | 2014-03-05 | 2015-05-20 | 湖南农业大学 | 一种甲基化egcg的制备方法 |
CN111575259B (zh) * | 2020-05-12 | 2022-04-08 | 安徽农业大学 | 一种酯型儿茶素合成酶、编码基因及其应用 |
CN114990169B (zh) * | 2022-06-16 | 2023-07-28 | 中国农业科学院茶叶研究所 | 一种制备EGCG-3”-Me的方法 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2002255810A (ja) | 2001-02-27 | 2002-09-11 | Tokyo Food Techno Kk | 新規抗菌剤、新規カテキン誘導体およびその製造方法 |
Family Cites Families (1)
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US6465229B2 (en) * | 1998-12-02 | 2002-10-15 | E. I. Du Pont De Nemours And Company | Plant caffeoyl-coa o-methyltransferase |
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2004
- 2004-11-17 JP JP2004333290A patent/JP2006141242A/ja active Pending
-
2005
- 2005-11-14 WO PCT/JP2005/020793 patent/WO2006054500A1/ja active Application Filing
- 2005-11-14 US US11/667,590 patent/US7879586B2/en not_active Expired - Fee Related
- 2005-11-14 CN CNA2005800392990A patent/CN101061222A/zh active Pending
- 2005-11-14 EP EP05806065A patent/EP1813674B1/en not_active Not-in-force
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2002255810A (ja) | 2001-02-27 | 2002-09-11 | Tokyo Food Techno Kk | 新規抗菌剤、新規カテキン誘導体およびその製造方法 |
Non-Patent Citations (6)
Title |
---|
"Molecular Cloning", COLD SPRING HARBOR LABORATORY PRESS |
BUSAM G ET AL: "Characterization and expression of caffeoyl-coenzyme A-3-0-methyltransferase proposed for the induced resistance response of Vitis vinifera L.", PLANT PHYSIOL., vol. 115, 1997, pages 1039 - 1048, XP000885715 * |
J. BIOCHEM., vol. 55, 1964, pages 205 |
MATSUO, N. ET AL., ALLERGY, vol. 52, 1997, pages 58 - 64 |
SANO M; SUZUKI M; MIYASE T; YOSHINO K; MAEDA-YAMAMOTO M, J. AGRIC. FOOD CHEM., vol. 47, no. 5, 1999, pages 1906 - 1910 |
See also references of EP1813674A4 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008096586A1 (ja) * | 2007-02-07 | 2008-08-14 | Incorporated Administrative Agency National Agriculture And Food Research Organization | 新規なメチル化カテキン及びそれを含む組成 |
JP2008189628A (ja) * | 2007-02-07 | 2008-08-21 | National Agriculture & Food Research Organization | 新規なメチル化カテキン及びそれを含む組成 |
WO2010067599A1 (ja) * | 2008-12-09 | 2010-06-17 | 静岡県公立大学法人 | アルキル化カテキンの効率的製造方法 |
JP5574435B2 (ja) * | 2008-12-09 | 2014-08-20 | 静岡県公立大学法人 | アルキル化カテキンの効率的製造方法 |
CN110885893A (zh) * | 2019-09-04 | 2020-03-17 | 广东省农业科学院茶叶研究所 | 一种位于wd-重复蛋白基因上与茶树表儿茶素含量连锁的分子标记位点及其应用 |
Also Published As
Publication number | Publication date |
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EP1813674B1 (en) | 2012-08-29 |
EP1813674A1 (en) | 2007-08-01 |
US7879586B2 (en) | 2011-02-01 |
US20080318272A1 (en) | 2008-12-25 |
CN101061222A (zh) | 2007-10-24 |
EP1813674A4 (en) | 2009-08-05 |
JP2006141242A (ja) | 2006-06-08 |
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