WO2001005996A1 - Procede d'obtention de derives optiquement actifs du pyridineethanol - Google Patents
Procede d'obtention de derives optiquement actifs du pyridineethanol Download PDFInfo
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- WO2001005996A1 WO2001005996A1 PCT/JP2000/004237 JP0004237W WO0105996A1 WO 2001005996 A1 WO2001005996 A1 WO 2001005996A1 JP 0004237 W JP0004237 W JP 0004237W WO 0105996 A1 WO0105996 A1 WO 0105996A1
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- 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.)
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- 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
- C12P17/10—Nitrogen as only ring hetero atom
- C12P17/12—Nitrogen as only ring hetero atom containing a six-membered hetero ring
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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
- C12P17/18—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
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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
- C12P41/00—Processes using enzymes or microorganisms to separate optical isomers from a racemic mixture
- C12P41/002—Processes using enzymes or microorganisms to separate optical isomers from a racemic mixture by oxidation/reduction reactions
Definitions
- the present invention relates to a method for producing an optically active pyridine ethanol derivative. More specifically, the present invention relates to a method for producing an optically active polycyclic pyridine ethanol derivative by allowing an enzyme or an enzyme source to act on a polycyclic acetyltyl pyridine derivative.
- the present invention also relates to a novel enzyme which can be used in the above production method, a DNA encoding the enzyme, a recombinant vector containing the DNA, and a transformant containing the recombinant vector.
- the present invention relates to a method for producing an optically active polycyclic pyridine ethanol derivative by allowing the above novel enzyme or the above transformant to act on the optically inactive polycyclic pyridine ethanol derivative.
- optically active pyridine ethanol derivative is a compound useful as a synthetic raw material and an intermediate for pharmaceuticals, agricultural chemicals and the like that require optical activity.
- a method for producing a polycyclic optically active pyridineethanol derivative includes a racemic 5- (1-hydroxyl) furo [2,3-c] pyridine or 5- (1-hydroxyl) ylpyridine.
- Methods for optical resolution of methylfuro [2,3-c] pyridine by asymmetric esterification reaction using pig kidney lipase 'type 2 (W096335678), racemic 7-chloro 5- (1—Hydroxyshetinole) lip [2,3-c] Pyridine is optically resolved by Candida 'antactica' lipase (C and i_d aantarctica 1 ipase)! Methods (thinlet, 41 (1 999)) are known. However, since these methods are optical resolutions, the yield of one solid is as low as 50% at most, which is not satisfactory.
- the present inventors have conducted extensive studies to develop an efficient method for producing an optically active polycyclic pyridine ethanol derivative.As a result, the acetyl pyridine derivative is stereoselectively reduced and converted to an optically active pyridine ethanol derivative. The inventors have found an enzyme source with no ability to report so far, and have completed the present invention.
- the present invention provides a compound represented by the general formula [1]:
- R 2 are bonded to each other to contain at least one heteroatom selected from the group consisting of an oxygen atom, a sulfur atom and a nitrogen atom, and to have a substituent.
- R 3 and R 4 may be the same or different, and may have a hydrogen atom, a halogen atom, a hydroxyl group, an alkyl group having 1 to 12 carbon atoms which may have a substituent, or a substituent
- An acetylviridine derivative represented by an alkoxy group having 1 to 12 carbon atoms The enzyme or enzyme source having reducing activity is acted on to reduce stereoselectively.
- R 2 , R 3 and R 4 are the same as above, and * represents an asymmetric carbon).
- Q represents an oxygen atom, a sulfur atom, or a general formula —N (D) —, wherein N is a nitrogen atom, and D represents a hydrogen atom or a monovalent protecting group).
- R 3 , R 4 , R 5 and R 6 are the same or different, and each represents a hydrogen atom, a halogen atom, a hydroxyl group, an optionally substituted alkyl group having 1 to 12 carbon atoms, or a substituent.
- An alkenyl group having 1 to 12 carbon atoms which may be possessed is reacted with an enzyme having an asymmetric reduction activity or an enzyme source to stereoselectively reduce the acetyl pyridine derivative.
- the present invention also relates to an enzyme having the following physicochemical properties (1) to (3):
- the present invention relates to DNAs encoding these enzymes or DNAs comprising the nucleotide sequence shown in SEQ ID NO: 2 in the sequence listing.
- the present invention also relates to a recombinant vector containing these DNAs, and a transformant containing the recombinant vector.
- R 2 may be bonded to each other, contain at least one heteroatom selected from the group consisting of an oxygen atom, a sulfur atom, and a nitrogen atom, and may have a substituent 5 monocyclic heterocycle to 8-membered, or, this monocyclic heterocycle will have another ring is fused, and to form a polycyclic heterocyclic ring which may have a substituent.
- R 3 And R 4 are the same or different and are a hydrogen atom, a halogen atom, a hydroxyl group, an alkyl group having 1 to 12 carbon atoms which may have a substituent, or a carbon number which may have a substituent
- the above enzyme and / or the above transformant are allowed to act on the pyridine ethanol derivative represented by the formula (1 to 12), and the R-form pyridine ethanol derivative is preferentially oxidized, and the remaining S-form pyridine is obtained.
- R 2 , R 3 and R 4 are the same as described above, and * represents an asymmetric carbon).
- Q represents an oxygen atom, a sulfur atom, or a general formula N (D) 1 (where N is a nitrogen atom and D represents a hydrogen atom or a monovalent protecting group).
- R 3 , R 4 , R 5 and R 6 may be the same or different, and may have a hydrogen atom, a halogen atom, a hydroxyl group, an alkyl group having 1 to 12 carbon atoms which may have a substituent, or a substituent.
- the above enzyme and Z or the above transformant are allowed to act on the pyridine ethanol derivative represented by the following formula (1), and the R-form pyridine ethanol derivative is preferentially oxidized and remains.
- the acetyl pyridine derivative used as a substrate in the production method of the present invention is represented by the following general formula [1].
- R 2 are bonded to each other to contain at least one hetero atom selected from the group consisting of an oxygen atom, a sulfur atom and a nitrogen atom, and to have a substituent. May form a 5- to 8-membered monocyclic heterocyclic ring, or may be obtained by condensing another ring with the monocyclic heterocyclic ring and optionally having a substituent. Form a heterocycle.
- examples of the 5-membered monocyclic heterocyclic ring include a furan ring, a dihydroblan ring, a pyrrole ring, a pyrroline ring, a dehydrodioxolane ring, a pyrazole ring, a virazoline ring, an imidazole ring, an oxazole ring, Examples include an isoxazole ring, an oxaziazole ring, a triazole ring, a thiazole ring, a thiophene ring, and a dihydrothiophene ring.
- Examples of the 6-membered monocyclic heterocycle include a pyran ring, a dihydropyran ring, a pyridine ring, a dihydropyridine ring, a tetrahydropyridine ring, a dehydrodoxane ring, a dehydromorpholine ring, a pyridazine ring, and a dehydropyridazine.
- Ring, a pyrimidine ring, a dihydropyrimidine ring, a tetrahydropyrimidine ring, a pyrazine ring, and a dihydropyrazine ring Ring, a pyrimidine ring, a dihydropyrimidine ring, a tetrahydropyrimidine ring, a pyrazine ring, and a dihydropyrazine ring.
- Examples of the 7-membered monocyclic heterocycle include a cycloheptane ring, a cycloheptadiene ring, a cycloheptatriene ring, and a thiazepine ring substituted with a nitrogen atom, an oxygen atom or a sulfur atom.
- Examples of the 8-membered monocyclic heterocycle include a cyclootaten ring, a cyclooctadiene ring, and a cyclooctatetraene ring substituted with a nitrogen atom, an oxygen atom or a sulfur atom.
- polycyclic heterocycle examples include benzofuran ring, isobenzofuran ring, chromene ring, indolizine ring, indole ring, isoindole ring, isoquinoline ring, phthalazine ring, naphthyridine ring, quinosaline ring, and benzothiophene ring. And hydrogenated rings thereof.
- Any of these heterocycles may have a substituent. Examples of such a substituent include a halogen atom, a hydroxyl group, an alkyl group having 1 to 12 carbon atoms, and an alkoxy group having 1 to 12 carbon atoms.
- a 5-membered monocyclic heterocyclic ring is preferable, a substituted or unsubstituted furan ring is more preferable, and a furan ring is particularly preferable.
- 1 3 and 13 ⁇ 4 4 are the same or different, a hydrogen atom, a halogen atom, a hydroxyl group, carbon atoms which may have a substituent 1 to 1 2 Al
- Specific examples include a hydrogen atom, a chlorine atom, a bromine atom, a fluorine atom, a hydroxyl group, a methyl group, an ethyl group, a methoxy group, and an ethoxy group.
- R 3 and R 4 are preferably a hydrogen atom or a chlorine atom, and more preferably a hydrogen atom.
- Q is an oxygen atom, a sulfur atom, or a general formula — N (D)-(where N is a nitrogen atom, and D represents a hydrogen atom or a monovalent protecting group. ).
- the monovalent protecting group is a commonly well-known group for protecting an amino group such as an acetyl group, a methoxycarbonyl group, and a benzyl group.
- Q is preferably an oxygen atom.
- R 3 , R 4 , R 5 and R 6 are the same or different and are a hydrogen atom, a halogen atom, a hydroxyl group, an alkyl group having 1 to 12 carbon atoms which may have a substituent, or And represents an alkoxy group having 1 to 12 carbon atoms which may have a substituent.
- R 3 and R 4 in the above general formula [1] can be mentioned.
- Q is an oxygen atom
- R 3 is a hydrogen atom or a chlorine atom
- R 4 is a hydrogen atom
- R 5 is a hydrogen atom
- the substrate used in the production method of the present invention has a general formula [3] wherein Q is an oxygen atom, and R 3 , R 4 , R 5 and R 6 are all hydrogen atoms. ], That is, 5_acetylfuro [2,3-c] pyridine.
- the acetyltilidine derivative represented by the general formula [1] can be easily obtained by a known production method.
- 5-acetylfuro [2,3-c] pyridine can be synthesized by the method described in Japanese Patent Application No. 9113335 (EP 911335).
- 5-Acetyl-7-chloroph [2,3-c] pyridine is prepared by the method described in J. Org. Chem., 63, 7851 (1998).
- 1-Hydroxityl) furo [2,3-c] pyridine can be synthesized and obtained by oxidizing the hydroxyl group.
- the enzyme or enzyme source used in the production method of the present invention may be an acetylviridine derivative.
- Those derived from microorganisms capable of converting [1] to an optically active pyridineethanol derivative [2] can be used.
- cells of such microorganisms, culture solutions or processed products thereof, or enzymes obtained from such microorganisms can be used. These may be used alone or in combination of two or more.
- Microorganisms having the ability to convert an acetyltilidine derivative [1] to an optically active pyridineethanol derivative [2] can be screened by the method described below. For example, when 5-acetylfuro [2,3-c] pyridine is used as the acetyltilidine derivative [1], the procedure is as follows.
- the cells were collected by centrifugation, suspended in 1-5 ml of phosphate buffer containing 2-10% of glucose, and 2.5-25 mg of 5-acetylph [2,3-c] pyridine was prepared in advance. Shake at 30 for 2-3 days, in addition to the test tube. At this time, cells obtained by centrifugation and dried in a desiccator or with acetone can also be used.
- NAD + oxidized nicotinamide dodenine dinucleotide
- NAD + reduced nicotinamide dodenine dinucleotide
- NADP + oxidized nicotinamide adenine dinucleotide phosphate
- NADPH reduced nicotinamide adenine dinucleotide phosphate
- glucose Dehydrogenase or formate dehydrogenase may be added.
- any microorganism can be used as long as it has the ability to convert an acetyltilidine derivative [1] to an optically active pyridineethanol derivative [2].
- Genus genus Corynebacteri um, genus Jensenia, genus Ochhrobactr um, genus Pseudomonas, genus Rhodococcus Microorganisms belonging to the genus Tsukamure 11a).
- Genus Kisolen (P ach V so 1 en), genus Pichia, genus Rhodosporidium (Rhodosporidium), genus Rhodotorula, succa
- Trigonopsis Trichosporon
- Genus Wii 1 1 opsis genus Yamadaz yma
- genus Zygo s_ acchar omy ces genus A / galigenes
- genus Bacillus Bacillus (Baci 1 1 us)
- brevibacterium Genus B revibacteri urn, genus Cellomomonas, genus Corynebacterium J3 ⁇ 4, genus Jensenia, genus Ochhrobactrum (Ochrobactr um), sudomonas do
- Rhodococcus Rh odococcus
- Tsu mosquito Murera T suk amu re 1 1 a
- a microorganism belonging to the genus is preferable.
- the genus Candida When the absolute configuration is to be converted to an R-form pyridine ethanol derivative, the genus Candida, the genus Ogataea (Q gataea), the genus Pichia, and the yamada zyma Microorganisms belonging to the genus, genus Brevibacteri urn, and genus Corynebacterium (Cor V nebacteri urn) are preferred.
- varsatiris (C andidaversati 1 is) IFO 190 8; Cyanida mogi (C andidamoii) IFO 04 36; Cyanida da vegensis (C andidanorveensis) IFO 102 0; Candida 'parapsilosis (C andidaarapsi 1) Pseudotropicalis (C andid a.
- pseudotrooica 1 is_) IAM 4 840, Candidarugosa (C andidarugosa) IFO 0 750, Candida Coleidaora (C andidao 1) eophila) CB S 2 219, Candida Stellata (C andidaste 1 lata) IFO 0 70 1, Candida 'tropicalis (C andidatroicali _s_) IFO 00 006, Candida-bodyny (C andidabodinii) I FO 10 5 74, Candida siteana (C andidaaitoana) IFO 0 380, Candida 'Albicans (C andidaalbicans) IFO 0 759, Candida' Carioida ligniola (C andida _cari_ osi 1 i 3 ⁇ 4_n ico 1 a IFO 1 910, Cyanida.
- Cryptococcus humico 1a CB S 189 96 Cryptococcus 'Teleus (Cryptoco c_c usterreu _s_) IFO 0 7 2 7, Clabispora' Rushitanye (C 1 a V ispora) 1 u s_i taniae) I FO 1 0 1 9, Deno Rio Myces' Don Sennii (D ebar Vo my ce s_ hansenii) IFO 00 8 2, De / Ryo My ses.
- Mouth Danensis (P jchiarhodanensis) I FO 1272, Pichia trehalophilus (P ichiatrehalohila) I FO 1 282, Pichia.
- Pichiawickerhamil I FO 1 278, Rhodosporium 'diobobatum (Rhods D ori _d ium diobovatum) IFO 0688, Rhodosporium sp.
- Rho odsporidium toru 1 oides I FO 0559, Rhodotorla la 'Araucariae (Rh odotorul ⁇ _ raucariae) I FO 1 0053, Rhodotorula 1 Glutinis (Rho odotorulag 1 utinis) IFO 1 99 Dairenensi _s_) I FO 04 15, Rhodotonula Ira Graminis (R odotorula graminis) IFO 0 190, Saccharomycopsis fibrigera (S acchar fibulipsi) ra) IFO 0 10 4, Saccharomycopsis maranga (S acchar omy cop sisma 1 anga) IFO 1 710, Pseudomyces' Occidenta Occidetalis I FO 0371, Spolidioboras • Johnsonii (S poridiobo 1 us J_o_h
- Seus S porobol omv cesroseus IFO 1106, Schizoblastosporion kobayashi (S chizoblastosporionkob a V asii) I FO 1 644, Stefanoascus sifeliii (tep h_a n_o asc u_s_ ciferri i_) IFO 1 854, Tonoreraspora.
- Grobosa (Toru 1 asporag 1 obosa) IFO 00 16 -Aquatil (T richosporon cutaneum) ATCC 223 10, Trichosporon 'Trichosporoncutane um I FO 1 198, Trichos Trichosporonfermentans ATCC 1 0 6 7 5, Willopsis' Corpas Bar 'Severolens (W illopsissaturnusvar .suaveo 1 ens) IFO 0 8 09, Willopsis'Satainasu' Noichi 'Murakii (W i 1 1 opsissaturnusvar.
- Xyloso oxidant (A 1 ca 1 igenesxylosoxidans) IFO 1 3 4 9 5, Alcaligenes xyloso oxidant .subspice dentrificans (A 1 ca 1 i R enesxylosoxidan _s_ subsp .dentrifican s_) IFO 1 2 6 6 9, Nosylas megaterium 1 usme 3 ⁇ 4 ateri um) Asciens (B aci 1 1 usa my 1 oli a_u efaciens) I FO 3 0 2 2, Brevibacterium 'Insertum' (B revibacterium incertum) IFO 1 2 1 4 5 ⁇ Cellulomonas' Fuimi (Cellulo mo nasfimi) I AM 1 2 107, Corynebacterium sp., ATCC 2124, Jensenia canicorria IFO 139,14, Ochrobactrum spices (Ochrobactr urn
- IFO 12 950 Pseudomonas s_ stutzeri (P seudomona s_ stutzeri) IFO 1 359, 6 Pseudp mo naschlororaphis IFO 394, Pseudomonas memdocina I FO 1 4 1 6 2, Rhodococcuserythropoli s I FO 12 3 2 0, Rhodococcus. Rhodococcus. Rhodococcus rhodochrous IFO 3 338, Pokkamlera 'J ⁇ suka mu re 1 1 a D aur ome tabo 1 a) IFO 122160 and the like.
- microorganisms can generally be obtained from readily available or purchased stocks, but can also be isolated from nature.
- a strain having advantageous properties can be obtained by performing a mutation in these microorganisms by this reaction.
- any culture medium containing a nutrient source that these microorganisms can usually utilize can be used.
- sugars such as glucose, sucrose, and maltose
- organic acids such as lactic acid, acetic acid, citric acid, and propionic acid
- alcohols such as ethanol and glycerin
- hydrocarbons such as paraffin
- oils and fats such as soybean oil and rapeseed oil , Or carbon sources such as mixtures thereof
- nitrogen sources such as ammonium sulfate, ammonium phosphate, urea, yeast extract, meat extract, peptone, corn steep liquor
- other nutrients such as inorganic salts and vitamins
- An ordinary medium in which the source is appropriately mixed and blended can be used. These media may be appropriately selected depending on the type of microorganism used.
- Microorganisms can be cultured under general conditions, for example, aerobically at pH 4.0 to 9.5, temperature range of 20 to 45 ° C for 10 to 96 hours. Is preferred.
- a microorganism is reacted with the acetyltilidine derivative [1]
- a culture solution containing cells of the microorganism can be used for the reaction as it is, but a concentrate of the culture solution can also be used.
- components in the culture solution adversely affect the reaction, cells obtained by treating the culture solution by centrifugation or the like, or cells treated with the cells can also be used.
- the treated cells of the above microorganisms are not particularly limited.
- an enzyme that catalyzes an asymmetric reduction reaction may be purified from the culture and used.
- the acetylviridine derivative [1] as a substrate may be added all at once in the early stage of the reaction, or may be added in portions as the reaction progresses.
- the temperature during the reaction is usually from 10 to 60 ° C, preferably from 20 to 4, and the pH during the reaction is from 2.5 to 9, preferably from 5 to 9.
- the amount of the enzyme or enzyme source in the reaction solution may be appropriately determined according to the ability to reduce these substrates.
- the substrate concentration in the reaction solution is preferably from 0.01 to 50% (w / v), more preferably from 0.1 to 30 ° / o (w / v).
- the reaction is usually performed with shaking or aeration and agitation.
- the reaction time is appropriately determined depending on the substrate concentration, the amount of the enzyme or the enzyme source, and other reaction conditions. Usually, it is preferable to set each condition so that the reaction is completed in 2 to 168 hours.
- an energy source such as glucose, ethanol, or isopropanol to the reaction solution at a ratio of 0.5 to 30% because excellent results can be obtained.
- the reaction can also be promoted by adding a coenzyme such as NADH or NADPH which is generally required for the reduction reaction by a biological method. In this case, specifically, these are added directly to the reaction solution.
- a coenzyme such as NADH or NADPH which is generally required for the reduction reaction by a biological method.
- these are added directly to the reaction solution.
- a surfactant such as Triton (manufactured by Nakarai Tesque Co., Ltd.), Span (manufactured by Kanto Chemical Co., Ltd.), or Tween (manufactured by Nakarai Testa Co., Ltd.)
- a surfactant such as Triton (manufactured by Nakarai Tesque Co., Ltd.), Span (manufactured by Kanto Chemical Co., Ltd.), or Tween (manufactured by Nakarai Testa Co., Ltd.)
- Water-insoluble organic compounds such as ethyl acetate, butyl acetate, isopropyl ether, toluene, and hexane are used to avoid the inhibition of the reaction by the acetyl pyridine derivative [1] and Z or the optically active pyridine ethanol derivative [2].
- a solvent may be added to the reaction solution.
- Water-soluble organic solvents such as methanol, ethanol, acetone, tetrahydrofuran, and dimethyl sulfoxide can be added to increase the solubility of the acetyltilidine derivative [1].
- the enzyme of the present invention DNA encoding the enzyme, a recombinant vector containing the DNA, and a transformant containing the recombinant vector will be described in detail.
- the enzyme of the present invention has the following physicochemical properties (1) to (3):
- an enzyme having the following physicochemical properties (4) to (6) in addition to the above physicochemical properties (1) to (3).
- Inhibitor Inhibited by mercury ions.
- the reducing activity of the enzyme is determined by adding lO OmM phosphate buffer (pH 6.5) to 1 mM of substrate, 0.25 mM of coenzyme NADH, and 0.35 of dimethyl sulfoxide. % (vo 1 / vo 1) and enzyme solution 3. Perform the reaction in Oml reaction solution at 30 ° C for 3 minutes and measure the decrease in absorbance at 340 nm wavelength.
- “reduction activity is very low” means that the reduction activity for the substrate is 10% or less when the reduction activity for 5-acetylfuro [2,3-c] pyridine is 100%.
- the molecular weight is determined by calculating from the relative elution time of the standard protein by gel filtration analysis using a TSK-G 3000 SW (7.8 mm ID X 30 cm) (manufactured by Tosoh Ichi Co., Ltd.) column. I do.
- the molecular weight of the subunit is determined by 20% SDS-polyacrylamide gel electrophoresis analysis from the relative mobility of the standard protein.
- the optimum pH and optimum temperature of the enzyme are determined, for example, by measuring the reducing activity while changing the reaction pH and reaction temperature of the reducing activity measuring system.
- the inhibitor is determined, for example, by adding various compounds to a reducing activity measuring system and measuring the reducing activity.
- the microorganism used as a source of the enzyme of the present invention is a stereo-selective reduction of 5-acetylfuro [2,3-c] pyridine to give 5- (1- (R) -hydroxyxethyl) [2,3-] c]
- Any microorganism that has an enzyme that produces pyridine may be used.
- the strain may be either a wild strain or a mutant strain, and further, a recombinant microorganism derived by a genetic technique such as cell fusion or genetic manipulation may be used.
- a microorganism belonging to the genus Candida (Candida) is used. More preferred is Candida's Maris (Candaria Maris), and particularly preferred is Candida's Maris (Candaria Maris) IFO 10003 strain.
- the following enzymes have the ability to stereoselectively reduce 5-acetylfuro [2,3-c] pyridine to form 5- (1- (R) -hydroxyxyl) furo [2,3-c] pyridine.
- An example of a method for obtaining the enzyme of the present invention from a microorganism will be described, but the present invention is not limited thereto.
- Microorganisms containing enzymes that produce 5- (1- (R) -hydroxyxethyl) furo [2,3-c] pyridine are reduced to an appropriate medium, and the cells are centrifuged from the culture solution Thereafter, the cells are suspended in an appropriate buffer, and the cells are disrupted or dissolved using a physical method such as glass beads, a biochemical method such as an enzyme, and the like. By removing solids in the solution, a crude enzyme solution can be obtained. Alternatively, a crude enzyme solution can be obtained from the culture solution by the same purification method as described above.
- the crude enzyme solution can be purified using a method commonly used by those skilled in the art, for example, ammonium sulfate precipitation, dialysis, and chromatography alone or in combination.
- a method commonly used by those skilled in the art for example, ammonium sulfate precipitation, dialysis, and chromatography alone or in combination.
- chromatography hydrophobic chromatography, ion exchange chromatography, and gel filtration chromatography can be used alone or in combination.
- the enzyme of the present invention may be a natural enzyme obtained from a microorganism as described above, or may be a recombinant enzyme.
- Examples of the natural enzyme include an enzyme having an amino acid sequence represented by SEQ ID NO: 1 in the sequence listing.
- the enzyme of the present invention comprises an amino acid sequence in which one or several amino acids are deleted, substituted and Z- or added in the amino acid sequence represented by SEQ ID NO: 1 in the sequence listing, and comprises 5-acetylfuro [2, 3].
- — C It may be one that has the activity of stereoselectively reducing pyridine to produce 5- (1- (R) —hydroxyxethyl) furo [2,3-c] pyridine.
- one or several amino acids are deleted, substituted, and Z or added by a well-known method such as site-directed mutagenesis. Deletion, substitution, or addition.
- Having the activity of stereoselectively reducing 5 _acetylfuro [2,3-c] pyridine to form 5- (1- (R) -hydroxyethyl) furo [2,3-c] pyridine means that When reacted with 5-acetylfuro [2,3-c] pyridin, it is 10% or more, preferably 40% or more, when an enzyme having the amino acid sequence represented by SEQ ID NO: 1 in the sequence listing is used. It is particularly preferable to produce 5- (1-1 (R) -hydroxyxethyl) furo [2,3-c] pyridine with a yield of 60% or more. To measure the yield, the above-described high performance liquid chromatography is used.
- DNA encoding the enzyme can be obtained by a method known to those skilled in the art. By introducing this DNA into another microorganism to obtain a recombinant microorganism and culturing it, it is possible to produce a large amount of an enzyme source that can be used in the production method of the present invention.
- the purified enzyme is digested with an appropriate endopeptidase, and the fragment cleaved by reverse-phase HP LC is purified. Then, a partial amino acid sequence is determined by a protein sequencer. Then, based on the obtained partial amino acid sequence, a PCR (PolymeraseChaneReactin) primer is synthesized.
- a PCR PolymeraseChaneReactin primer is synthesized.
- chromosomal DNA of the microorganism is prepared from the microorganism as a source of the DNA by a conventional DNA isolation method, for example, the Hereford method (Ce 11, 18, 1261 (11979)). I do.
- telomere sequence a part of the DNA encoding the enzyme is amplified (core sequence), and the nucleotide sequence is determined.
- the nucleotide sequence can be determined by the didoxy chain termination method or the like. For example, it can be carried out using ABI 373 A DNA Sequencer (produced by Applied Biostems) or the like.
- the chromosomal DNA of the microorganism is digested with a restriction enzyme having no recognition sequence in the core sequence, and the resulting DNA fragment is self-circulated with T4 ligase.
- type III DNA is prepared for reverse PCR (Nucleic Acids Res. 16, 186 (1988)).
- a primer is synthesized as a starting point of DNA synthesis toward the outside of the core sequence, and a region around the core sequence is amplified by reverse PCR.
- the DNA sequence of the entire coding region of the target enzyme can be clarified.
- the DNA encoding the enzyme of the present invention can be obtained from the chromosomal DNA of the microorganism by a method such as PCR.
- a DNA encoding the enzyme of the present invention is incorporated into a vector, and the enzyme gene can be expressed in a transformant obtained by introducing the DNA into a host.
- a vector used for this purpose any vector that can express the enzyme gene in an appropriate host can be used. Either can be used.
- Such vectors include, for example, plasmid vectors, phage vectors, cosmid vectors, and the like.
- a shuttle vector capable of gene exchange with another host can be used.
- Such vectors include operably linked promoters (1 a cUV5 promoter, tr ⁇ promoter, trc promoter, tac promoter, lpp promoter, tuf B promoter, rec A promoter, p L promoter) and the like. It can be suitably used as an expression vector containing an expression unit containing a control factor and operably linked to the DNA of the present invention.
- p UCNT WO 94/036 13
- the like can be suitably used.
- regulatory refers to a nucleotide sequence having a functional promoter and any associated transcription elements (eg, enhancer, CCAAT box, TATA box, SPI site, etc.).
- operably linked refers to a state in which a DNA and various regulatory elements such as a promoter and an enhancer that regulate its expression can operate in a host cell so that a gene is expressed. Means to be connected. It is well known to those skilled in the art that the types and types of regulatory factors can vary depending on the host.
- Examples of the host into which the recombinant vector containing the DNA of the present invention is introduced include bacteria, yeasts, filamentous fungi, plant cells, animal cells, etc., and Escherichia coli is particularly preferred.
- the DNA of the present invention can be introduced into a host cell by a conventional method. When Escherichia coli is used as a host cell, the DNA of the present invention can be introduced by, for example, the calcium chloride method.
- the acetylethylpyridine derivative [1] is stereoselectively reduced to obtain a pyridineethanol derivative having an R-configuration in absolute configuration, and particularly preferably 5-acetylfuro [2,3-c].
- pyridine is stereoselectively reduced to obtain 5- (1- (R) -hydroxyethyl) furo [2,3-c] pyridine
- NADH is required as a coenzyme. It can be carried out by adding the required amount of NADH to the reaction system.
- coenzyme regeneration ability an enzyme having the ability to convert the oxidized coenzyme (NAD +) to the reduced form (NAD H) (hereinafter referred to as coenzyme regeneration ability) is used together with its substrate, that is, the coenzyme regeneration system is used in the present invention.
- coenzyme regeneration ability an enzyme having the ability to convert the oxidized coenzyme (NAD +) to the reduced form (NAD H)
- coenzyme regeneration ability an enzyme having the ability to convert the oxidized coenzyme (NAD +) to the reduced form (NAD H) (hereinafter referred to as coenzyme regeneration ability) is used together with its substrate, that is, the coenzyme regeneration system is used in the present invention.
- coenzyme regeneration ability As the enzyme, hydrogenase, formate dehydrogenase, alcohol dehydrogenase, glucose 16-phosphate dehydrogenase, glucose dehydrogenase and the like can be used.
- Such a reaction can also be carried out by adding a coenzyme regeneration system into the asymmetric reduction reaction system, but it is transformed by both the DNA encoding the enzyme of the present invention and the DNA encoding glucose dehydrogenase.
- a transformant When a transformant is used, the reaction can be carried out efficiently without separately preparing an enzyme having a coenzyme regeneration ability and adding it to the reaction system.
- Such a transformant can be produced by incorporating the DNA encoding the enzyme of the present invention and the DNA encoding the glucose dehydrogenase into the same vector and introducing them into a host, and It can also be produced by incorporating these two types of DNA into two types of vectors having different incompatibility groups, respectively, and introducing them into the same host.
- a transformant containing a recombinant vector containing DNA encoding the enzyme of the present invention and DNA encoding glucose dehydrogenase and a first transformant containing DNA encoding the enzyme of the present invention.
- a second recombinant vector containing DNA encoding glucose dehydrogenase is a transformant containing a recombinant vector containing DNA encoding the enzyme of the present invention and DNA encoding glucose dehydrogenase.
- the regeneration reaction of NADH can be performed simultaneously by adding a substrate for the regeneration to the reaction system.
- the use of expensive coenzyme can be greatly reduced without adding an enzyme having coenzyme regeneration ability to the reaction system.
- NADH can be regenerated by adding isopropanol to the reduction reaction system.
- 5- (1— (R— ) —Hydroxitytil) Flo [2,3-c] pyridin can be produced as follows. However, it is not limited to the following method. First, the substrate 5-acetylfuro [2,3-c] pyridine [1], a coenzyme such as NAD +, and a culture of the transformant or a processed product thereof are added to an appropriate solvent. The reaction is carried out with stirring under pH adjustment. The reaction is at a temperature of 10-70 The pH of the reaction solution is maintained at 4 to 10 during the reaction.
- the reaction can be carried out batchwise or continuously.
- the reaction substrate can be added at a charged concentration of 0.1% to 70% (w / v).
- the processed product of the transformant means, for example, a crude enzyme solution, a cultured cell, a freeze-dried cell, an acetone-dried cell, a ground product thereof, or a mixture thereof. Further, they can be used by immobilizing the enzyme itself or bacterial cells by known means.
- the amount of coenzyme used can be reduced by further adding glucose to the reaction system. It is possible to greatly reduce.
- the pyridine ethanol derivative used as a substrate in the production method of the present invention is represented by the following general formula [5].
- R 2 are the same as those mentioned in the above general formula [1]. Among them, a 5-membered monocyclic heterocyclic ring is preferable, a substituted or unsubstituted furan ring is more preferable, and a furan ring is particularly preferable.
- R 3 and R 4 are also the same as those mentioned in the general formula [1], preferably a hydrogen atom or a chlorine atom, and more preferably a hydrogen atom.
- the pyridineethanol derivative [5] is not particularly limited as long as the optical purity is less than 100%. It can be completely racemic or has some optical purity May be used.
- Q is the same as that mentioned in the general formula [3].
- Q is preferably an oxygen atom.
- R 3 , R 4 , R 5 and R 6 are the same as those mentioned in the general formula [3].
- Q is an oxygen atom
- R 3 is a hydrogen atom or a chlorine atom
- R 4 is a hydrogen atom
- R 5 is a hydrogen atom.
- R 6 is a hydrogen atom or a methyl group.
- the substrate used in the production method of the present invention has a general formula [7] in which Q is an oxygen atom and R 3 , R 4 , R 5 and R 6 are all hydrogen atoms. , That is, 5- (1-hydroxyshethyl) furo [2,3-c] pyridine.
- the pyridineethanol derivative represented by the general formula [5] can be easily obtained by a known production method.
- 5- (1-hydroxyxethyl) furo [2,3-c] pyridine can be synthesized by the method described in European Patent Application No. 91 1 335 (EP 911 335).
- NAD + is required as a coenzyme. It can also be carried out by adding NAD + in the required amount to the reaction system.
- an enzyme capable of converting the reduced coenzyme to an oxidized form By performing the reaction in combination with the enzyme of the present invention together with the quality, the amount of expensive coenzyme used can be largely eliminated.
- a microorganism containing an enzyme capable of converting the reduced coenzyme to an oxidized form or a processed product thereof may be used.
- an enzyme having the ability to convert the reduced coenzyme into an oxidized form for example, NADH oxidase, NADH dehydrogenase and the like can be used.
- NAD + regeneration reaction can be performed simultaneously by adding a substrate for the regeneration to the reaction system.
- the amount of expensive coenzyme used can be greatly reduced without adding another enzyme having the ability to regenerate NAD +.
- NAD + can be regenerated by adding acetone to the reaction system.
- the reaction proceeds by NAD + present in the cells, and NADH generated by reduction of NAD + is reoxidized in the cells, so that the coenzyme It can be performed without adding an enzyme having NAD + regeneration ability.
- the method for collecting the optically active pyridine ethanol derivative obtained by any of the above methods is not particularly limited. Ethyl acetate, toluene, t-butyl methyl ether, hexane Extraction with a solvent such as the above, dehydration, and purification by distillation, crystallization, or silica gel column chromatography can easily provide highly pure optically active pyridineethanol derivatives. BRIEF DESCRIPTION OF THE FIGURES
- FIG. 1 shows the nucleotide sequence and deduced amino acid sequence of DNA determined in Example 21.
- FIG. 2 shows a method for producing the recombinant vector pNTFP of Example 22 and the recombinant vector pNTFPG of Example 23, and their structures.
- PH7 liquid medium
- Tables 1 and 2 summarize the amount, optical purity, and absolute configuration of the product, 5- (1-hydroxyhexyl) furo [2,3-c] pyridine, per reaction solution.
- Candida cariosilignicnla IFO 1910 1.44 100.0 s
- Saccharomyces cerevisiae Saccharomyces cerevisiae
- Saccharomyces cerevisiae Saccharomyces cerevisiae
- Saccharomyces cerevisiae Saccharomyces cerevisiae
- Example 4 Candidatropica 1 1 s
- Yeast extract 3 g phosphorus 6.5 g of diammonium hydrogen oxyate, 1 g of potassium dihydrogen phosphate, 0.8 g of magnesium sulfate heptahydrate, 6 Omg of zinc sulfate heptahydrate, 9 Omg of iron sulfate heptahydrate, 9 Omg of copper sulfate pentahydrate
- Liquid culture medium consisting of 5 mg of hydrate, 1 Omg of manganese sulfate tetrahydrate, and 1 mg of sodium chloride lO Omg (each 90 Om1)
- Adekinol 225 ml, 2 drops of Adekinol were placed in a 2 L volumetric flask and sterilized, and 25 ml of a sterilized 40% glucose aqueous solution and Candida.tropica obtained by the culture method described in Example 1 were added thereto.
- a squirrel (C andidatropica 1 is) IFO 0006 culture solution (2.5 ml) was aseptically inoculated and cultured with shaking at 30 ° C for 24 hours. After the culture, 300 ml of the culture solution was centrifuged to collect the cells, and the cells were suspended in 100 ml of 10 OmM phosphate buffer (pH 6.5).
- Example 5 Preparation of cell-free extract from Candidaintermedia IFO 0761 and use of the same to prepare 5_ (1—) from 5-acetylfuro [2,3-c] pyridine (S) —Hydroxyshethyl) Synthesis of Flo [2,3-c] pyridine
- Cultivation in a 5 L jar arm mentor was performed in the same manner as described in Example 3, except that the stirring speed was 700 rpm, the aeration rate was 1.5 LZ, and the culture time was changed to 16 hours. .
- C andidaintermedia I FO 0761 was cultured. After culturing, the obtained culture solution 94 Om 1 was The cells were collected by centrifugation, washed twice with 100 ml of 10 OmM phosphate buffer (pH 6.5), and washed with 4 OO ml of wet cells to a concentration of 5 mM.] 3-Mercaptoethanol was added.
- the suspension was suspended in 200 ml of 10 OmM phosphate buffer (pH 6.5), and the cells were disrupted with a beat beater (manufactured by BioSpec Products). The bacterial cell residue was removed by centrifugation, and ammonium sulfate was added to achieve a saturation of 80 ° / 0, and then the supernatant was removed by centrifugation. The obtained precipitate was suspended in 15 ml of 10 OmM phosphate buffer ( ⁇ ⁇ ⁇ 6.5) to which 5 mM of mercaptoethanol was added, and 3 The resultant was dialyzed against 10 OmM phosphate buffer (pH 6.5) to which mercaptoethanol was added to obtain 64.5 ml of a cell-free extract.
- a beat beater manufactured by BioSpec Products
- Example 7 Preparation of acetone-dried cells of Candida maris IFO 1003, and the use of 5- (1-3) from 5-acetylfuro [2,3—c] pyridine — (R) —Hydroxitytil) Synthesis of furo [2,3-c] pyridine Yeast extract 3 g, diammonium hydrogen phosphate 6.5 g, potassium dihydrogen phosphate lg, magnesium sulfate heptahydrate 0.8 g, zinc sulfate heptahydrate 6 Omg, iron sulfate heptahydrate 9 Omg , A liquid culture medium consisting of 5 mg of copper sulfate pentahydrate, 1 Omg of manganese sulfate tetrahydrate and 10 Omg of sodium chloride (both per 90 Om1), and 1 drop of Adekinol to 50 Om1 It was put in a Nosaka flask and sterilized, and 5 ml of a sterilized 40% glucose
- Example 8 Preparation of cell-free extract from Candida maris IFO 10003, and use of 5-acetylfuro [2,3-c] pyridine from 5- (1- (R) -Hydroxyschechinole) Synthesis of flow [2,3-c] pyridine
- Candida was cultured in the same manner as described in Example 3, except that the culture in the 5 L jar armmenter was changed to a stirring speed of 300 rpm, an aeration rate of 0.75 L / min, and a culture time of 76 hours.
- 'Culcus (C andida maris) I FO 1000 3 was cultured. Cells were collected from the obtained culture solution (215 Om1) by centrifugation, washed with 500 ml of 10 OmM phosphate buffer (pH 6.5), and the wet cells were removed. The cells were suspended in 43 Oml of 10 OmM phosphate buffer (pH 6.5) to which jS-mercaptoethanol was added to a concentration of 5 mM, and the cells were beat-bited (BioSpec.
- [2,3-c] pyridine 0.25 g, NAD + 30 mg, glucose 2.5 g, glucose dehydrogenase (trade name: GLUC DH "Amano" II, Amano Pharmaceutical Co., Ltd.) 30 24 ml of the cell-free extract was added to the three-necked flask containing the OU to perform a reduction reaction. The reaction was carried out at 30 ° C. with stirring while adjusting the pH of the reaction solution to 6.5 with a 5N aqueous sodium hydroxide solution. A part of the reaction solution was periodically analyzed by HPLC, and when the substrate was dead, 0.25 g of the substrate was further added to continue the reaction. The reaction was carried out for about 72 hours while repeating this operation. After the completion of the reaction, the amount of 5- (1-hydroxyhydric) furo [2,3-c] pyridine produced was 2.2 g. Yield 88%, optical purity (R) 100% e.e.
- Example 9 5— (1— (R) from 5-Acetylfuro [2,3-c] pyridine Using Cell-free Extract of Candida maris IFO1000 ) —Hydroxitytil) Flow [2,3-c] pyridine Synthesis)
- a 5-acetylf [2,3- c] A reduction reaction was performed by adding 0.25 g of pyridine, 40 mg of NAD +, 0.25 g of sodium formate, and 120 U of formate dehydrogenase (manufactured by F1uka).
- the reaction was carried out at 30 with stirring while adjusting the pH of the reaction solution to 6.5 with 5N formic acid. A part of the reaction solution was periodically analyzed by HPLC, and when the substrate was dead, 0.25 g of the substrate was further added to continue the reaction. The reaction was carried out for about 93 hours while repeating this operation. After completion of the reaction, the amount of 5_ (1-hydroxyhydricyl) furo [2,3-c] pyridine produced was 1.8 g. Yield 72%, optical purity (R) 100% e.e.
- Example 11 1 5-Acetylfuro [2,3-c] Pyridine Using Cell-free Extract of Candida maris IFO 10003 5- (1- (R) -Hydroxitytil ) Synthesis of flow [2,3-c] pyridine
- pH sulfuric acid Liquid medium
- Table 5 summarizes the amount, optical purity, and absolute configuration of the product 5- (1-hydroxyl) -17-chlorobutamate [2,3-c] pyridine per reaction solution.
- the reduction activity was measured by adding l-OmM phosphate buffer (pH 6.5) to the substrate 5-acetylfuro [2,3-c] pyridine 1 mM, NADH 0.25 mM, dimethyl sulfoxide 0.3% (V o 1 / vo 1) Including the enzyme solution 0.05 ml 3.
- the reaction was carried out in an Oml reaction solution for 30 to 3 minutes, and the decrease in absorbance at a wavelength of 340 nm was measured. This was used as standard reaction conditions for measurement of reduction activity. Under these reaction conditions, the enzyme activity that oxidizes l / mo1 NADH to NAD + per minute was defined as 1 unit.
- Liquid medium consisting of the above composition was put into a 5 L jar arm mentor, and sterilized by adding 25 L and 5 drops of decanol, and sterilized with 25 Om 1 of sterilized 40% glucose aqueous solution and 50 ml of seed seed. , And cultivated for 140 hours at a culture temperature of 30 ° C, a stirring speed of 300 rpm, and an aeration rate of 0.3 L / min. During culture, when the pH was lower than 5.5, the pH was adjusted to 5.5 with a 5N aqueous sodium hydroxide solution.
- the cells were collected by centrifugation from 10 L of the culture solution obtained by the above culture method, washed twice with 5 L of physiological saline, and the wet cells were washed with 5 mM / 3-mercaptoethanol and ⁇ 0
- the cells were suspended in 100 mM Tris-HCl buffer (pH 7.5) 12 O Oml containing 1 mM PMS F, and the cells were disrupted with Dynomill (Dyno-Mi11). Cell residue was removed by centrifugation to obtain 1760 ml of a cell-free extract.
- the activity was measured under the standard reaction conditions for measurement of reduction activity described in Example 14 while changing only the temperature to 20 to 80 ° C. As a result, the optimum temperature was 50-55 ° C.
- Example 14 Under the standard reaction conditions for the measurement of reduction activity described in Example 14, the activity was measured using acetic acid buffer, phosphate buffer, and tris-hydrochloride buffer as the buffer and changing the pH in the range of 3.5 to 9.0. Was done. As a result, the optimum pH was 5.0 to 6.0.
- Example 14 Under the standard reaction conditions for measurement of reduction activity described in Example 14, various compounds and metal salts as inhibitors were added to the concentrations shown in Table 7, and the activity was measured. Table 7 shows the relative activities when the activity when no inhibitor was added was 100%. As a result, the enzyme activity was inhibited by mercury ions.
- Oxidation activity was measured by adding lO OmM phosphate buffer (pH 8.0) to 1 mM NAD + 0.25 mM substrate, 0.3% dimethyl sulfoxide (V o 1 o 1) and 0.05 ml of enzyme solution. The reaction was carried out in an Oml reaction solution at 30 ° C for 3 minutes, and the increase in absorbance at a wavelength of 340 nm was measured. This was used as the standard reaction condition for measuring the oxidatively active substrate. Under these reaction conditions, the enzymatic activity for reducing 1 / zmol of NAD + to NADH per minute was defined as 1 unit.
- Table 10 shows that 100% of the oxidizing activity was obtained when 5 (1- (R) -hydroxyl shetyl) furo [23-c] pyridine was used as the substrate. The relative activity was shown as As a result, it had oxidizing activity for various compounds. Table 10
- Example 19 Synthesis of 5- (1- (R) -hydroxyxethyl) furo [2,3-c] pyridine from 5-Acetylfuro [2,3-c] pyridine by FPDH) 0.1M phosphoric acid containing 5 units of the obtained FPDHO. 5 units, 5-acetylfuro [2,3-c] pyridine 5 mg, glucose 20 mg, NAD + O. 5 mg, glucose dehydrogenase (manufactured by Amano Pharmaceutical) 4 units 0.5 ml of buffer solution (pH 6.5) was stirred at 3 for 17 hours. After the reaction, analysis was performed in the same manner as in Example 1. As a result, the optical purity was 100 ° / at a conversion of 100%.
- e The 5- (1— (R) —hydroxyxethyl) furo [2,3-c] pyridine of e.
- Chromosome DNA was extracted from the culture of Candida's Maris IFO 10003 according to the method described in Herford (Cel, 18, 261 (17979)).
- the purified FPDH obtained as in Example 14 was denatured in the presence of 8 M urea, and then digested with achromopactor-derived lysyl endopeptidase (manufactured by Wako Pure Chemical Industries, Ltd.). Sequence was determined by the Edman method. In consideration of the DNA sequence expected from this amino acid sequence, two types of PCR primers (primer 1: 5′—GGNGCNATHGTNAAYATGGG—3 ′, primer: 2: 5, one CCDATNGGRTGYTGNGTDAT—3) were synthesized.
- Primer 1 and Primer 2 Two types of primers (Primer 1 and Primer 2) 100 pmo 1 each, 660 ng chromosomal DNA, 20 nmo each dNTP, ExT aq (Takara Shuzo Co., Ltd.) 2. Prepare EXT aq buffer solution 1001 containing 5 U Then, heat denaturation (95 ° C, 1 minute), annealing (40, 1 minute) and extension reaction (65, 2 minutes) were performed for 40 cycles. After cooling to 4, the DNA was confirmed by agarose gel electrophoresis.
- the amplified DNA was subcloned into pT7B1ueVector (manufactured by Novagen), and its nucleotide sequence was determined. As a result, the amplified DNA was composed of 230 bases including the primer sequence.
- the sequence is the double-underlined DNA sequence in the DNA sequence shown in FIG. Hereinafter, this sequence is referred to as “core sequence”.
- GGAGCGGCC ACATACG Complementary sequence near the 5'-side of the core sequence Based on AGTGAATGG (Primer 3) and the sequence AGACA CCATTGCTTGATATTTGCCC (Primer-1) close to one side, two PCR primers (Primer-3 and Primer-4) having the same sequences were synthesized.
- AGTGAATGG Primary 3
- AGACA CCATTGCTTGATATTTGCCC Primary 3
- Primer-4 two PCR primers having the same sequences were synthesized.
- the reverse PCR type II first, the chromosomal DNA of Candida maris IFO 10003 was digested with the restriction enzyme PstI, and the digest was self-closed using T4 DNA ligase.
- FIG. 1 summarizes the entire nucleotide sequence and the deduced amino acid sequence encoded by the DNA.
- the single underlined portion represents the amino acid sequence of the peptide fragment generated by digesting purified FPDH with lysyl peptidase, which can be determined by the Edman method.
- the amino acid sequence of FPDH derived from Candida's Maris I FO10003 is shown in SEQ ID NO: 1 in the sequence listing.
- the nucleotide sequence of the DNA encoding the above FPDH is shown in SEQ ID NO: 2 in the sequence listing.
- FPDH In order to express FPDH in Escherichia coli, a recombinant vector used for transformation was prepared. First, a double-stranded DNA in which an NdeI site was added to the start codon of the FPDH structural gene, and a new stop codon and an EcoRI site were added immediately after the stop codon was obtained by the following method. .
- Primer 5 (5'-CGCCATATGTCCTACAATTTTGCCAAC-3,) having an NdeI site added to the start codon of the FPDH structural gene, and the entirety of the FPDH structural gene Primer 6 (5, -GCGGAATTCTTATTATC) with a new stop codon and an EcoRI site added immediately after the codon TTGCGGTATAACCACC-3,) was synthesized.
- FIG. 2 shows the preparation method and structure of pNTFP.
- Bacillus megaterium Sine-Dalgarn of Escherichia coli 5 bases upstream from the start codon of the gene for glucose dehydrogenase (hereinafter referred to as GDH) from IAM 1030 strain.
- GDH glucose dehydrogenase
- Escherichia coli HB101 (manufactured by Takara Shuzo Co., Ltd.) was transformed using the recombinant vector pNTF P obtained in Example 22 and the recombinant vector pNTF PG obtained in Example 23. Recombinant E. coli HB101 (pNTFP) and HB101 (pNTFPG) were obtained.
- Escherichia coli HB101 (pNTF P) and HB101 (pNTF PG), respectively, have accession numbers FERM BP—71 16 (deposited on April 11, 2000) and FERM B P-71 1 7 (Deposit date: April 11, 2000) Institute of Biotechnology, Institute of Industrial Science and Technology, Ministry of International Trade and Industry (address: 1-3-1, Higashi, Tsukuba, Ibaraki, S-Homeland) Has been deposited.
- Bacillus megaterium obtained by double digesting plasmid pGDA2 (J. Biol. Chem., 264, 6381 (1 989)) with EcoRI and PstI. us me gateri um) and insert a DNA fragment of about 0.9 kb containing the GDH gene into the EcoRI-PstI site of plasmid pSTV28 (Takara Shuzo Co., Ltd.) to obtain the recombinant vector pSTVG. It was constructed. Escherichia coli HB101 (pNTFP, pSTVG) was transformed with this pSTVG at a high transfection rate by transforming E. coli HB101 (pNTFP), which had been made competent by the calcium chloride method in advance, into a high transfection rate. Obtained easily.
- the recombinant Escherichia coli HB101 (pNTFP) obtained in Example 24 was mixed with 120 ⁇ g / m 1 of ampicillin in 2 XYT medium (Bacto 'tryptone 1.6% (w / v), Yeast extract 1.0% (w / v), NaC 10.5% (w / v), pH 7.0), and after collecting the cells, 100 mM Tris-HCl buffer (pH 7) And sonicated to obtain a cell-free extract.
- the FPDH activity of this cell-free extract was measured by the method described in Example 14. The results are shown in Table 11 as specific activities. Bacteria 3 ⁇ 4 ⁇ name F PDH specific activity (U / mg)
- E. coli HB 10 12.7 E. coli HB 10 (p NTFP) has a clearer FPDH activity compared to E. coli HB 01 (p UCNT), which is a vector plasmid-only transformant. Increased power S was seen.
- Example 26 Simultaneous expression of FPDH and GDH in recombinant Escherichia coli
- Recombinant Escherichia coli HB101 (pNTFPG) and recombinant Escherichia coli HB101 (pNTFP, pSVTG) obtained in Example 24 was treated in the same manner as in Example 25, and the FPDH activity and GDH activity were measured for the cell-free extract obtained.
- To measure the GDH activity add the substrate glucose 0.1 ⁇ coenzyme NAD ⁇ + 2 mM and the enzyme to 1 M Tris-HCl buffer ( ⁇ 80) and measure the increase in absorbance at 340 mM at 25 ° C. It was done by doing.
- E. coli HB101 (pNTF PG) and E. coli HB101 (pNTFP, pSVTG) showed clearer FPDH and GDH compared to E. coli HB101 (pUCNT), a transformant containing only vector plasmid. There was an increase in activity.
- Example 27 5- (1- (R) -H) from 5-acetylfuro [2,3-c] pyridine by recombinant Escherichia coli transfected with FPDH gene under the condition of adding isopropanol to the reaction system. Dloxityl) Synthesis of flow [2,3-c] pyridine) The recombinant E.
- Example 24 coli HB101 (pNTFP) obtained in Example 24 was sterilized in a 500-ml Sakaguchi flask at 5 Om 1 in 2 XYT medium. , And cultured with shaking at 37 for 18 hours. 1 ml of the obtained culture solution was adjusted to pH 7.0, and 5 O-acetylfuro [2,3-c] pyridine 5 Omg, isopropanol 1501 and NAD + 0.22 mg were added thereto. The mixture was stirred at 30 ° C for 7.5 hours. After completion of the reaction, the conversion and optical purity of the product, 5- (1-hydroxyshethyl) furo [2,3-c] pyridine, were measured by the same analytical method as in Example 1. The conversion was 95%. 7%, optical purity (R) 100% e.e.
- the recombinant Escherichia coli HB101 (pNTFP) obtained in Example 24 was inoculated into a sterilized 50 ml 2 XYT medium in a 500 ml 1 volume Sakaguchi flask, and cultured with shaking at 37 for 18 hours. did. 540 units of glucose dehydrogenase (manufactured by Amano Pharmaceutical Co., Ltd.), 1.0 g of 5-acetylfuro [2,3-c] pyridine, 1.0 g of NAD + 3 mg, and 3 g of glucose were added to 2 Om 1 of the obtained culture solution. The mixture was stirred at 30 for 29 hours while adjusting the pH to 6.5 by dropwise addition of a 2.5 M aqueous sodium hydroxide solution. After completion of the reaction, the conversion and optical purity of the product 5_ (1-hydroxyethyl) furo [2,3-c] pyridine were measured by the same analytical method as in Example 1. 7.1%, optical purity (R) was 100% e.e.
- the recombinant E. coli HB101 (p NTFPG) obtained in Example 24 was A sterilized 5 Om 1 2XYT medium was inoculated in a Sakaguchi flask, and cultured with shaking at 37 ° C for 18 hours.
- 5-Ocetylfuro [2,3-c] pyridine 1.O g, NAD + 3 mg and glucose 3 g were added to the obtained culture medium 2 Om 1, and a 2.5 M aqueous sodium hydroxide solution was added dropwise. The mixture was stirred at 30 ° C. while adjusting to pH 6.5. Six hours after the reaction, 1.O g of 5-acetylfuro [2,3-c] pyridine and 3.O g of glucose were additionally added.
- the recombinant Escherichia coli HB101 (pNTFPG) obtained in Example 24 was inoculated into a sterilized 5 Om1 2X YT medium in a 500 ml Sakaguchi flask and shaken at 37 ° C for 18 hours. Cultured. 5-Ocetylfuro [2,3-c] pyridine 4 Og, NAD + 3 mg, glucose 6 g, butyl acetate 2 Oml were added to the obtained culture solution 2 Om 1, and a 5 M sodium hydroxide aqueous solution was added. Was adjusted to pH 6.5 by dropwise addition, and the mixture was stirred at 30.
- the recombinant E. coli HB101 (pNTFP) obtained in Example 24 was 5 Om 1 of 2 XYT medium sterilized in a mouth flask was inoculated, and cultured with shaking at 37 for 18 hours. 1 ml of the obtained culture solution was adjusted to pH 6.5, and 10 mg of 5— (1-hydroxyhydric) furo [2,3—c] pyridine (optical purity was 0% ee) and 50% acetone / 1 and NAD + O. 1 mg were added, and the mixture was stirred at 3 for 7 hours.
- the recombinant Escherichia coli HB101 (pNTFP) obtained in Example 24 was inoculated into 5 Om1 of 2XYT medium sterilized in a 500-ml Sakaguchi flask and shaken at 37 "3 ⁇ 4 for 18 hours. 1 ml of the obtained culture solution was adjusted to pH 6.5, and 10 mg of 5- (1-hydroxyhexyl) furo [2,3-c] pyridine (optical purity was 0% e ) was added and stirred for 7 hours at 30.
- an optically active pyridineethanol derivative can be produced in high yield by reducing the acetyl pyridine derivative by the action of an enzyme or an enzyme source having an asymmetric reduction activity.
- a novel enzyme, D encoding the enzyme Provided are a NA, a recombinant vector containing the DNA, and a transformant containing the recombinant vector. Further, the use of the enzyme and the transformant enables efficient production of an optically active pyridineethanol derivative.
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JP2001511206A JP4753273B2 (ja) | 1999-07-21 | 2000-06-28 | 光学活性ピリジンエタノール誘導体の製造方法 |
CA002343970A CA2343970A1 (en) | 1999-07-21 | 2000-06-28 | Process for producing optically active pyridineethanol derivatives |
DE60038281T DE60038281T2 (de) | 1999-07-21 | 2000-06-28 | Verfahren zur herstellung von optisch aktiven pyridinethanol-derivaten |
AU57041/00A AU5704100A (en) | 1999-07-21 | 2000-06-28 | Process for producing optically active pyridineethanol derivatives |
HU0105169A HUP0105169A3 (en) | 1999-07-21 | 2000-06-28 | Process for producing optically active pyridineethanol derivatives |
EP00942359A EP1116795B1 (en) | 1999-07-21 | 2000-06-28 | Process for producing optically active pyridineethanol derivatives |
KR1020017003608A KR20010075253A (ko) | 1999-07-21 | 2000-06-28 | 광학활성 피리딘에탄올 유도체의 제조방법 |
US10/669,503 US7329518B2 (en) | 1999-07-21 | 2003-09-25 | Enzyme for producing optically active pyridineethanol derivatives |
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JP20650399 | 1999-07-21 | ||
JP11/206503 | 1999-07-21 |
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US09787746 A-371-Of-International | 2001-06-20 | ||
US10/669,503 Division US7329518B2 (en) | 1999-07-21 | 2003-09-25 | Enzyme for producing optically active pyridineethanol derivatives |
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WO2001005996A1 true WO2001005996A1 (fr) | 2001-01-25 |
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PCT/JP2000/004237 WO2001005996A1 (fr) | 1999-07-21 | 2000-06-28 | Procede d'obtention de derives optiquement actifs du pyridineethanol |
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US (1) | US7329518B2 (ja) |
EP (1) | EP1116795B1 (ja) |
JP (1) | JP4753273B2 (ja) |
KR (1) | KR20010075253A (ja) |
AT (1) | ATE389010T1 (ja) |
AU (1) | AU5704100A (ja) |
CA (1) | CA2343970A1 (ja) |
DE (1) | DE60038281T2 (ja) |
HU (1) | HUP0105169A3 (ja) |
WO (1) | WO2001005996A1 (ja) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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EP1179595A1 (en) * | 2000-02-16 | 2002-02-13 | Daicel Chemical Industries, Ltd. | (r)-2-octanol dehydrogenase, process for producing the enzyme, dna encoding the enzyme and process for producing alcohol by using the same |
WO2004048586A1 (ja) * | 2002-11-27 | 2004-06-10 | Taisho Pharmaceutical Co., Ltd. | 光学活性な1−シクロヘキシル−2−プロピン−1−オールの製造方法 |
WO2006013802A1 (ja) | 2004-08-06 | 2006-02-09 | Kaneka Corporation | エナンチオマー豊富化化合物の製造方法 |
JP2006246772A (ja) * | 2005-03-10 | 2006-09-21 | Kaneka Corp | 光学活性ビニルアルコール類の製造方法 |
WO2007010944A1 (ja) | 2005-07-20 | 2007-01-25 | Kaneka Corporation | 光学活性2-(n-置換アミノメチル)-3-ヒドロキシ酪酸エステル類の製造方法 |
US7797392B2 (en) | 2002-11-26 | 2010-09-14 | International Business Machines Corporation | System and method for efficiently supporting multiple native network protocol implementations in a single system |
WO2012063843A1 (ja) | 2010-11-09 | 2012-05-18 | 株式会社カネカ | ハロゲン化インデノン類及びそれを用いた光学活性インダノン類又は光学活性インダノール類の製造方法 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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AT502395B1 (de) * | 2005-07-27 | 2007-03-15 | Iep Gmbh | Oxidoreduktasen zur stereoselektiven reduktion von ketoverbindungen |
CN114934083A (zh) * | 2022-05-31 | 2022-08-23 | 重庆张邦医药科技有限责任公司 | 一种高纯度(s)-1-(吡啶-2-基)乙醇衍生物的制备方法 |
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- 2000-06-28 HU HU0105169A patent/HUP0105169A3/hu unknown
- 2000-06-28 AU AU57041/00A patent/AU5704100A/en not_active Abandoned
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- 2000-06-28 JP JP2001511206A patent/JP4753273B2/ja not_active Expired - Fee Related
- 2000-06-28 WO PCT/JP2000/004237 patent/WO2001005996A1/ja active IP Right Grant
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Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
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EP1179595A1 (en) * | 2000-02-16 | 2002-02-13 | Daicel Chemical Industries, Ltd. | (r)-2-octanol dehydrogenase, process for producing the enzyme, dna encoding the enzyme and process for producing alcohol by using the same |
US6706507B2 (en) * | 2000-02-16 | 2004-03-16 | Daicel Chemical Industries, Ltd. | (R)-2-octanol dehydrogenases, methods for producing the enzymes, DNA encoding the enzymes, and methods for producing alcohols using the enzymes |
EP1179595A4 (en) * | 2000-02-16 | 2004-12-08 | Daicel Chem | (R) -2-OCTANOL DEHYDROGENASES, PRODUCTION OF SUCH ENZYMES, DNA ENCODING THESE ENZYMES, AND PRODUCTION OF ALCOHOLS USING SUCH ENZYMES |
US7202069B2 (en) | 2000-02-16 | 2007-04-10 | Daicel Chemical Industries, Ltd. | (R)-2-octanol dehydrogenases, methods for producing the enzymes, DNA encoding the enzymes, and methods for producing alcohols using the enzymes |
JP4651896B2 (ja) * | 2000-02-16 | 2011-03-16 | ダイセル化学工業株式会社 | (r)−2−オクタノール脱水素酵素、該酵素の製造方法、該酵素をコードするdnaおよびこれを利用したアルコールの製造方法 |
US7797392B2 (en) | 2002-11-26 | 2010-09-14 | International Business Machines Corporation | System and method for efficiently supporting multiple native network protocol implementations in a single system |
WO2004048586A1 (ja) * | 2002-11-27 | 2004-06-10 | Taisho Pharmaceutical Co., Ltd. | 光学活性な1−シクロヘキシル−2−プロピン−1−オールの製造方法 |
WO2006013802A1 (ja) | 2004-08-06 | 2006-02-09 | Kaneka Corporation | エナンチオマー豊富化化合物の製造方法 |
JP2006246772A (ja) * | 2005-03-10 | 2006-09-21 | Kaneka Corp | 光学活性ビニルアルコール類の製造方法 |
WO2007010944A1 (ja) | 2005-07-20 | 2007-01-25 | Kaneka Corporation | 光学活性2-(n-置換アミノメチル)-3-ヒドロキシ酪酸エステル類の製造方法 |
EP2357248A1 (en) | 2005-07-20 | 2011-08-17 | Kaneka Corporation | Method for producing optically active 2-(N-substituted aminomethyl)-3-hydroxybutyric acid ester |
WO2012063843A1 (ja) | 2010-11-09 | 2012-05-18 | 株式会社カネカ | ハロゲン化インデノン類及びそれを用いた光学活性インダノン類又は光学活性インダノール類の製造方法 |
Also Published As
Publication number | Publication date |
---|---|
US7329518B2 (en) | 2008-02-12 |
HUP0105169A3 (en) | 2004-03-01 |
EP1116795B1 (en) | 2008-03-12 |
EP1116795A4 (en) | 2005-01-26 |
ATE389010T1 (de) | 2008-03-15 |
DE60038281D1 (de) | 2008-04-24 |
KR20010075253A (ko) | 2001-08-09 |
JP4753273B2 (ja) | 2011-08-24 |
US20040043460A1 (en) | 2004-03-04 |
EP1116795A1 (en) | 2001-07-18 |
HUP0105169A2 (hu) | 2002-04-29 |
CA2343970A1 (en) | 2001-01-25 |
AU5704100A (en) | 2001-02-05 |
DE60038281T2 (de) | 2009-03-26 |
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