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    • 2. 发明公开
    • 신규 D-글루탐산 합성효소 유전자 DNA 및 이를 이용한 항생제 비의존성 벡터
    • 用于恒定高表达的抗生素独立载体和使用该基因表达的基因表达方法
    • KR1020020061022A
    • 2002-07-22
    • KR1020010001690
    • 2001-01-12
    • 주식회사 바이오리더스한국생명공학연구원
    • 성문희이승구홍승표윤은자최윤호부하령이상철
    • C12N15/65
    • C12N15/65
    • PURPOSE: Provided are an antibiotics-independent vector for constant high-expression and a method for gene expression using the same. The antibiotics-independent vector can be applied to high expression of useful DNAs and proteins, and production of recombinant proteins. CONSTITUTION: The antibiotics-independent plasmid vector is constructed by using a major amino acid composing a cell wall and a gene associated with D-glutamic acid synthase, as an auxotrophic maker, and it contains DNA or its fragment which is represented by the SEQ ID NO:1. The antibiotics-independent plasmid vector expresses a foreign gene in the absence of antibiotics, and shows D-glutamic acid synthesis activity in a bacterium. The foreign gene is characteristically selected from the group consisting of nucleic acids coding proteins, anti-sense RNA, and ribozyme. A transformant including the expression vector is cultured without adding antibiotics to its culture medium in order to give proteins.
    • 目的:提供用于恒定高表达的抗生素非依赖载体和使用其的基因表达方法。 抗生素无关载体可用于高表达有用的DNA和蛋白质,以及重组蛋白的产生。 构成:通过使用构成细胞壁的主要氨基酸和与D-谷氨酸合酶相关的基因作为营养缺陷型制剂,构建与抗生素无关的质粒载体,并且其含有由SEQ ID NO:1。 不含抗生素的质粒载体在不存在抗生素的情况下表达外源基因,并在细菌中显示D-谷氨酸合成活性。 外源基因特征性地选自编码蛋白质,反义RNA和核酶的核酸组。 培养包含表达载体的转化体,而不向其培养基中加入抗生素以产生蛋白质。
    • 6. 发明公开
    • 고분자량의 폴리-감마-글루탐산을 생산하는 내염성 균주 바실러스 서브틸리스 청국장
    • 生产高分子量聚乳酸的BSA-4能够生产聚氨基酸的高分子量的HALOPHILE MICROORGANISM BACILLUS SUBTILIS BS-4
    • KR1020020079889A
    • 2002-10-19
    • KR1020027010976
    • 2001-08-11
    • 한국생명공학연구원주식회사 바이오리더스
    • 성문희백대헌이승구송재준홍승표최윤호한재숙아시우치마코토소다겐지부하령나유진
    • C12N1/20
    • C12R1/125C07K14/32
    • PURPOSE: Provided are halophile microorganism Bacillus subtilis BS-4 capable of producing high molecular weight of poly-γ-glutamic acid and a method for producing the high molecular weight of poly-γ-glutamic acid using the same, thereby producing the high molecular weight poly-γ-glutamic acid in higher yield. CONSTITUTION: The halophile microorganism Bacillus subtilis BS-4 (KCTC 0697BP) capable of producing high molecular weight of poly-γ-glutamic acid is isolated from 'Chug Kook Jang'(Fermented soybean paste) by the steps of: diluting 'Chug Kook Jang' in distilled water; heating the diluted solution at 60 deg. C for 20 minutes; plating the diluted solution on GS agar medium; culturing it at 37 deg. C for 3 days; isolating high viscosity of colonies; culturing the colonies in a broth at 37 deg. C for 20 hours; and selecting a strain showing the best growth activity. The method for producing the high molecular weight of poly-γ-glutamic acid comprises the steps of: (a) culturing the Bacillus subtilis BS-4(KCTC 0697BP) to obtain poly-γ-glutamic acid; and (b) removing polysaccharides from the poly-γ-glutamic acid; dissolving the precipitate of poly-γ -glutamic acid and adding a protease into the solution to decompose an extracellular protein; and dialyzing the solution to remove free glutamic acid and concentrating the solution.
    • 目的:提供能够生产高分子量聚-γ-谷氨酸的嗜碱性微生物枯草芽孢杆菌BS-4,以及使用其制备高分子量聚-γ-谷氨酸的方法,从而产生高分子量 聚-γ-谷氨酸。 构成:通过以下步骤从“Chug Kook Jang”(发酵大豆酱)分离能够产生高分子量聚-γ-谷氨酸的嗜碱性微生物枯草芽孢杆菌BS-4(KCTC 0697BP),稀释“Chug Kook Jang 在蒸馏水中 将稀释溶液加热至60℃。 C 20分钟; 将稀释的溶液电镀在GS琼脂培养基上; 在37度培养 C 3天; 分离菌落的高粘度; 在37℃的肉汤培养菌落。 C 20小时; 并选择显示最佳生长活性的菌株。 制备高分子量聚-γ-谷氨酸的方法包括以下步骤:(a)培养枯草芽孢杆菌BS-4(KCTC 0697BP)以获得聚-γ-谷氨酸; 和(b)从聚-γ-谷氨酸中除去多糖; 溶解聚-γ-谷氨酸的沉淀物,并向溶液中加入蛋白酶以分解细胞外蛋白质; 并透析溶液以除去游离谷氨酸并浓缩溶液。
    • 8. 发明公开
    • 신규 프로모터 및 이 프로모터를 사용한 유전자 발현방법
    • 用于调节基因表达的新型促进剂和方法
    • KR1020030072208A
    • 2003-09-13
    • KR1020027014299
    • 2001-04-26
    • 주식회사 바이오리더스다카라 바이오 가부시키가이샤
    • 성문희이승구홍승표서화정
    • C12N15/75
    • C07K14/32C12N15/70C12N15/75
    • PURPOSE: Novel promoter which is capable of expressing a gene with a high level and a method for regulating gene expression using the same are provided, thereby easily and cheaply expressing the gene. CONSTITUTION: An isolated DNA having a base sequence represented by SEQ ID NO: 1 or 2 or its fragment showing a constitutive promoter activity in Escherichia coli or bacteria belonging to the genus Bacillus is provided. An isolated DNA hybridizable with the above DNA and showing a constitutive promoter activity in Escherichia coli or bacteria belonging to the genus Bacillus is provided. A recombinant DNA including the above DNA and a foreign gene is provided. A vector containing at least the above DNA for gene expression is provided. An expression vector containing the above recombinant DNA is provided. A transformed cells carrying the above recombinant DNA or the above expression vector is provided. A process for producing a protein comprises culturing the above transformed cell and collecting the protein from the culture medium. A kit for producing a protein contains at least the above DNA or the above vector for gene expression.
    • 目的:提供能够表达高水平基因的新型启动子和使用其的基因表达调节方法,从而容易且廉价地表达该基因。 构成:提供了具有由SEQ ID NO:1或2表示的碱基序列的分离的DNA或其在大肠杆菌或属于芽孢杆菌属的细菌中显示组成型启动子活性的片段。 提供了与上述DNA杂交的分离的DNA,并在大肠杆菌或属于芽孢杆菌属的细菌中显示组成型启动子活性。 提供了包含上述DNA和外来基因的重组DNA。 提供了至少含有上述用于基因表达的DNA的载体。 提供含有上述重组DNA的表达载体。 提供携带上述重组DNA或上述表达载体的转化细胞。 制备蛋白质的方法包括培养上述转化细胞并从培养基中收集蛋白质。 用于产生蛋白质的试剂盒至少含有上述DNA或上述用于基因表达的载体。
    • 9. 发明公开
    • 고분자량의 폴리-감마-글루탐산을 생산하는 내염성 균주바실러스 서브틸리스 청국장
    • BACILLUS SUBTILISVAR。 CHUNGKOOKJANG(KTCT 0697BP)生产高分子量的多糖 - 谷氨酸
    • KR1020010078440A
    • 2001-08-21
    • KR1020010001481
    • 2001-01-11
    • 주식회사 바이오리더스가부시키 가이샤 파마푸즈
    • 성문희백대헌이승구송재준홍승표최윤호신선영한재숙아시우치마코토소다겐지
    • C12N1/20
    • C12R1/125C07K14/32
    • PURPOSE: Provided is salt tolerant strain, Bacillus subtilisvar. chungkookjang (KTCT 0697BP) isolated from Korean traditional fermented food, chungkookjang. And poly-gamma-glutamic acid is also provided which is edible, water-soluble, anionic, biodegradable and produced from the strain, and which is used in cosmetics, absorbent, biodegradable plastic materials. CONSTITUTION: A Bacillus subtilisvar. chungkookjang (KTCT 0697BP) is isolated from chungkookjang. A preparation method of poly-gamma-glutamic acid from the strain comprises the steps of: (a) inoculating and cultivating Bacillus subtilisvar. chungkookjang (KTCT 0697BP) in a medium to produce poly-gamma-glutamic acid and then, adding acids until PH becomes 2 to 4 , to obtain liquid that includes poly-gamma-glutamic acid; (b) removing polysaccharide from the resultant liquid, followed by extracting with solvent and centrifuging it to obtain precipitate of poly-gamma-glutamic acid; (c) dissolving the precipitant by adding distilled water, then degrading exogenous protein by proteinase; and (d) dialyzing it to remove free glutamic acid and concentrating it.
    • 目的:提供耐盐菌株,枯草芽胞杆菌菌。 chungkookjang(KTCT 0697BP)从韩国传统发酵食品,chungkookjang分离。 还提供了可从食品,水溶性,阴离子性,生物降解性和从菌株生产的聚γ-谷氨酸,并且用于化妆品,吸收性,可生物降解的塑料材料中。 构成:枯草芽孢杆菌。 chungkookjang(KTCT 0697BP)从chungkookjang隔离。 来自菌株的聚-γ-谷氨酸的制备方法包括以下步骤:(a)接种并培养枯草芽孢杆菌菌素。 (KTCT 0697BP)在培养基中产生聚-γ-谷氨酸,然后加入酸直到PH变为2〜4,得到包含聚-γ-谷氨酸的液体; (b)从所得液体中除去多糖,然后用溶剂萃取,离心分离得到聚-γ-谷氨酸沉淀物; (c)通过加入蒸馏水溶解沉淀剂,然后通过蛋白酶降解外源蛋白质; 和(d)透析以除去游离谷氨酸并浓缩。