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    • 2. 发明公开
    • 강제전사를 통한 메타게놈 유래 유용효소의 고효율 탐색방법
    • 使用强制转录从元数据库筛选有用的酶的方法
    • KR1020130039034A
    • 2013-04-19
    • KR1020110103459
    • 2011-10-11
    • 한국생명공학연구원
    • 이승구최수림나유진송재준이상준권길광김은미최종현권오석
    • C12Q1/34C12Q1/26C12Q1/48C12N15/63
    • C12N15/1086C40B40/08
    • PURPOSE: A high efficiency detection method of metagenome-derived useful enzyme is provided to enhance the expression of a foreign gene using a forces transcription system, to sense a small amount of reactant, and to sort a target gene. CONSTITUTION: A high efficiency detection method for metagenome-derived enzyme through forced transcription comprises: a step of randomly inserting transposon into a metagenome library gene containing a gene encoding an enzyme to be detected; a step of transducing the metagenome library to a RNA polymerase-inserted host microbe and preparing a recombinant microbe library; a step of introducing a redesigned genetic circuit for sensing phenol compounds to the metagenome library; a step of treating an inducer to the recombinant microbe library and culturing; a step of treating the recombinant microbe library with a phenol releasing compound; a step of measuring and detecting activity of a reporter protein at high speed; and a step of collecting a gene of the enzyme which releases the phenol compounds from a detected microbe and performing sequencing of the gene. [Reference numerals] (AA) Redesigned genetic circuit searching system; (BB) Redesigned genetic circuit; (CC) Forced transcription introducing library; (DD) Forced transcription system; (EE) Metagenome library; (FF) Forced transcription unit;
    • 目的:提供一种高效检测方法,用于使用强力转录系统,感测少量反应物,并对靶基因进行分类,从而提高外源基因的表达。 构成:通过强制转录的用于宏基因组衍生酶的高效检测方法包括:将转座子随机插入含有编码待检测酶的基因的宏基因组文库基因的步骤; 将巨基因组文库转导到插入RNA聚合酶的宿主微生物并制备重组微生物文库的步骤; 引入用于感测苯酚化合物的重新设计的遗传回路进入宏基因组文库的步骤; 将诱导剂处理至重组微生物文库进行培养的步骤; 用释放酚的化合物处理重组微生物文库的步骤; 高速测定报道蛋白活性的步骤; 以及收集从检测到的微生物释放酚化合物并进行基因测序的酶的基因的步骤。 (附图标记)(AA)重新设计的遗传电路检索系统; (BB)重新设计遗传电路; (CC)强制转录引入文库; (DD)强迫转录系统; (EE)Metagenome文库; (FF)强制转录单位;
    • 7. 发明公开
    • 이소프렌 생합성효소 활성의 신규 탐색 및 정량방법
    • 检测和定量目标异丙肾上腺素生物活性酶活性的方法
    • KR1020130143354A
    • 2013-12-31
    • KR1020120066846
    • 2012-06-21
    • 한국생명공학연구원
    • 이승구김은미나유진오기훈최의성
    • C12N9/00G01N33/68C12N15/63C12N15/52
    • The present invention relates to methods for detecting and quantifying isoprene biosynthesis enzyme activities and, more specifically, to methods for detecting and quantifying isoprene biosynthesis enzyme activities using a gene circuit which is capable of detecting isoprene , toluene, and benzene based compounds. By using the method for detecting enzyme activities according to the present invention, various enzyme activities can be rapidly detected and quantified with high sensitivity using sensitivity and expression adjustment of the isoprene, toluene, and benzene based compounds, and the method can be used in protein engineering for enzyme improvement. Specially, the enzyme activities can be quantitatively detected so that the method can be applied in molecular evolution. Through the present invention, trace amount such as 50 uM of isoprene can be detected with high sensitivity, analysis in cell unit, which was impossible in conventional methods, can be performed, IspS with enhanced activities can be performed through a high speed detection, and the present invention can be efficiently used in a process of detecting novel IspS genes from microorganism metagenome libraries.
    • 本发明涉及用于检测和定量异戊二烯生物合成酶活性的方法,更具体地说,涉及使用能够检测异戊二烯,甲苯和苯基化合物的基因回路来检测和定量异戊二烯生物合成酶活性的方法。 通过使用根据本发明的酶活性检测方法,可以使用异戊二烯,甲苯和苯基化合物的灵敏度和表达调节来高灵敏度地快速检测和定量各种酶活性,并且该方法可用于蛋白质 酶改良工程。 特别地,可以定量检测酶活性,使得该方法可以应用于分子进化。 通过本发明,可以高灵敏度地检测50uM的异戊二烯的痕量,以细胞为单位进行分析,这在常规方法中是不可能的,可以进行具有增强活性的IspS可以通过高速检测进行,并且 本发明可以有效地用于检测来自微生物巨噬细胞库的新型IspS基因的过程。