Abstract:
본 발명은 아시네토박토 종 SY-01의 입체선택적 기질 특이성을 갖는 리파제 변이체의 유전자 서열 및 이로부터 발현되는 단백질에 관한 것이다. 본 발명의 아시네토박토 종 SY-01 리파제로부터 돌연변이된 리파제는 활성이 우수하므로 상기 리파제 변이체 코딩 유전자를 포함하는 형질전환된 리파제를 생체 촉매로서 산업적으로 이용될 수 있다.
Abstract:
PURPOSE: Provided are a gene coding lipase of Acinetobacter species SY-01 with stereoselective substrate specificity and a protein expressed therefrom. CONSTITUTION: A gene is characterized by coding amino acid sequence of lipase of Acinetobacter species SY-01, represented by the SEQ ID NO:2. A transformed Bacillus subtilis 168/pSYLipSM(1) (KCTC 10267BP) is obtained by transformation with a recombinant vector plasmid pSYLipSM(1) containing the gene coding the lipase of Acinetobacter species SY-01. The lipase of Acinetobacter species SY-01 is manufactured by the steps of culturing the transformed bacillus subtilis, and isolating and purifying expressed lipase of Acinetobacter species SY-01 from the cultured cell.
Abstract translation:目的:提供具有立体选择底物特异性的不动杆菌属SY-01的脂肪酶基因和由其表达的蛋白质。 构成:基因的特征在于编码由SEQ ID NO:2表示的不动杆菌属物种SY-01的脂肪酶的氨基酸序列。 通过用含有编码不动杆菌属SY-01的脂肪酶的基因的重组载体质粒pSYLipSM(1)转化获得转化的枯草芽孢杆菌168 / pSYLipSM(1)(KCTC 10267BP)。 通过培养转化的枯草芽孢杆菌并从培养的细胞中分离和纯化不动杆菌属SY-01的表达脂肪酶的步骤制造不动杆菌属物种SY-01的脂肪酶。
Abstract:
PURPOSE: Provided are a gene coding lipase of Acinetobacter species SY-01 with stereoselective substrate specificity and a protein expressed therefrom. CONSTITUTION: A gene is characterized by coding amino acid sequence of lipase of Acinetobacter species SY-01, represented by the SEQ ID NO:2. A transformed Bacillus subtilis 168/pSYLipSM(1) (KCTC 10267BP) is obtained by transformation with a recombinant vector plasmid pSYLipSM(1) containing the gene coding the lipase of Acinetobacter species SY-01. The lipase of Acinetobacter species SY-01 is manufactured by the steps of culturing the transformed bacillus subtilis, and isolating and purifying expressed lipase of Acinetobacter species SY-01 from the cultured cell.
Abstract translation:目的:提供具有立体选择性底物特异性的不动杆菌种SY-01的编码脂肪酶的基因和由其表达的蛋白质。 组成:基因的特征在于编码不动杆菌属物种SY-01的脂肪酶的氨基酸序列,由SEQ ID NO:2表示。 通过用含有编码不动杆菌属物种SY-01的脂肪酶的基因的重组载体质粒pSYLipSM(1)转化获得转化的枯草芽孢杆菌168 / pSYLipSM(1)(KCTC 10267BP)。 不动杆菌菌种SY-01的脂肪酶是通过培养转化的枯草芽孢杆菌,从培养细胞中分离纯化不动杆菌菌种SY-01的表达脂肪酶。
Abstract:
PURPOSE: A catalyzed resolution method of racemic cis-1,3-dioxolane derivatives is provided, thereby effectively separating racemic cis-1,3-dioxolane derivatives which is useful as an intermediate used for preparing itraconazole and ketoconazole. CONSTITUTION: The catalyzed resolution method of racemic cis-1,3-dioxolane derivatives represented by formula (1) comprises hydrolysis of racemic cis-1,3-dioxolane derivatives using enzyme in a phosphate buffer solution at pH 6 to 9 and 20 to 60 deg. C to prepare pure cis-1,3-dioxolane derivatives of formulas (1a) and (1b), wherein R is CH2OH, COOH, COOR' or CH2OCOR'; R' is C1-C10 alkyl; the enzyme is Pseudomonas cepacia(PCL) or Candida antartica(CAL).
Abstract:
PURPOSE: Provided are a gene encoding mutant lipase of acinetobacter species SY-01, Bacillus subtilis 168/pSYLipM58 (KCTC 10422BP) as a transformant containing the same, and mutant lipase expressed therefrom displaying improved enzyme activity. The transformant is useful as a bio-catalyst. CONSTITUTION: The gene encoding mutant lipase of Acinetobacter species SY-01 has the nucleotide sequence set forth in SEQ ID NO:2. A recombinant vector of Acinetobacter species SY-01, plasmid pSYLipM58, comprises the gene encoding mutant lipase of Acinetobacter species SY-01. The transformant, Bacillus subtilis 168/pSYLipM58(KCTC 10422BP), contains the plasmid pSYLipM58. The method for producing the mutant lipase of Acinetobacter species SY-01 comprises the steps of: culturing Bacillus subtilis 168/pSYLipM58(KCTC 10422BP); and recovering and purifying the mutant lipase of Acinetobacter species SY-01 expressed from the cultured microorganism.
Abstract:
PURPOSE: A process for preparing cis-2- (bromomethyl)-2- (2,4-dichlorophenyl)- 13-dioxolane- 4-methyl alcohol having high optical selectivity is provided. A stereo-selective enzyme maintains its maximum activity because the reaction product is rapidly removed from the reaction solution during the reaction in order not to inhibit the activity of the enzyme. CONSTITUTION: A process for preparing cis-2- (bromomethyl)-2- (2,4-dichlorophenyl)- 13-dioxolane- 4-methyl alcohol having high optical selectivity comprises hydrolysis of cis-2- (bromomethyl)-2- (2,4-dichlorophenyl)- 1,3-dioxolane- 4-methyl acetate using lipase produced from Acinetobacter sp. SY-01(KFCC-11111), and recovering an alcohol product as a reaction product from the reaction solution during the reaction, wherein the concentration of the alcohol product is 0.1 to 300 mg/l; the reaction product is recovered when the conversion rate of the hydrolysis reaction is 40 to 60%; the hydrolysis reaction is carried out under conditions of 40 to 60 deg. C, pH 7.0 to 9.0 and 100 to 300 rpm; and the reaction product is recovered by column chromatography.
Abstract:
PURPOSE: A process for preparing cis-2- (bromomethyl)-2- (2,4-dichlorophenyl)- 13-dioxolane- 4-methyl alcohol having high optical selectivity is provided. A stereo-selective enzyme maintains its maximum activity because the reaction product is rapidly removed from the reaction solution during the reaction in order not to inhibit the activity of the enzyme. CONSTITUTION: A process for preparing cis-2- (bromomethyl)-2- (2,4-dichlorophenyl)- 13-dioxolane- 4-methyl alcohol having high optical selectivity comprises hydrolysis of cis-2- (bromomethyl)-2- (2,4-dichlorophenyl)- 1,3-dioxolane- 4-methyl acetate using lipase produced from Acinetobacter sp. SY-01(KFCC-11111), and recovering an alcohol product as a reaction product from the reaction solution during the reaction, wherein the concentration of the alcohol product is 0.1 to 300 mg/l; the reaction product is recovered when the conversion rate of the hydrolysis reaction is 40 to 60%; the hydrolysis reaction is carried out under conditions of 40 to 60 deg. C, pH 7.0 to 9.0 and 100 to 300 rpm; and the reaction product is recovered by column chromatography.
Abstract:
PURPOSE: A catalyzed resolution method of racemic cis-1,3-dioxolane derivatives is provided, thereby effectively separating racemic cis-1,3-dioxolane derivatives which is useful as an intermediate used for preparing itraconazole and ketoconazole. CONSTITUTION: The catalyzed resolution method of racemic cis-1,3-dioxolane derivatives represented by formula (1) comprises hydrolysis of racemic cis-1,3-dioxolane derivatives using enzyme in a phosphate buffer solution at pH 6 to 9 and 20 to 60 deg. C to prepare pure cis-1,3-dioxolane derivatives of formulas (1a) and (1b), wherein R is CH2OH, COOH, COOR' or CH2OCOR'; R' is C1-C10 alkyl; the enzyme is Pseudomonas cepacia(PCL) or Candida antartica(CAL).