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    • 1. 发明公开
    • 신규한 옥시게네이즈 유전자를 내포시킨 재조합 대장균을이용한 인디고 및 인디루빈의 생물학적 제조방법
    • 生物学方法生产靛蓝和靛蓝由重组体大肠杆菌共培养新型氧化亚基
    • KR1020030036580A
    • 2003-05-09
    • KR1020030025761
    • 2003-04-23
    • 학교법인조선대학교김시욱
    • 김시욱최학선김진권김용철김재일
    • C12N15/53
    • C12P1/04C12N15/70C12P17/165
    • PURPOSE: Biological methods for producing indigo and indirubin by a recombinant E. coli harboring a novel oxygenase gene are provided, in which indigo and indirubin can be produced by a microorganism without using organic solvents causing environmental pollution. CONSTITUTION: The oxygenase gene isolated from Methylophaga thalassica SK1(KCTC-10323BP) has the nucleotide sequence of SEQ ID NO: 1. The oxygenase expressed by the oxygenase gene of SEQ ID NO: 1 has the amino acid sequence of SEQ ID NO: 2. The method for producing indigo and indirubin comprises isolating and amplifying the oxygenase gene of SEQ ID NO: 1; cloning the oxygenase gene into a vector; transforming E. coli with the recombinant vector containing the oxygenase gene; and culturing the transformed E. coli in a medium containing tryptophane, so that indol derived from tryptophane is converted indol oxide by the oxygenase, wherein indigo is produced by dimerization of indol oxide(indoxyl) and indirubin is produced by combination of indoxyl with isatin; and the recombinant E. coli is cultured in a medium containing 5 to 15 mM of tryptophane, 0.5 to 1.5% of NaCl and 0.2 to 0.8% of yeast extract under the aeration rate of 0.5 to 2.0 vvm.
    • 目的:提供含有新型加氧酶基因的重组大肠杆菌生产靛蓝和靛玉红的生物学方法,其中靛蓝和靛玉红可以由微生物生产而不使用引起环境污染的有机溶剂。 构成:从Methylophaga thalassica SK1(KCTC-10323BP)分离的加氧酶基因具有SEQ ID NO:1的核苷酸序列。由SEQ ID NO:1的加氧酶基因表达的加氧酶具有SEQ ID NO:2的氨基酸序列 制备靛蓝和靛玉红的方法包括分离并扩增SEQ ID NO:1的加氧酶基因; 将加氧酶基因克隆到载体中; 用含有加氧酶基因的重组载体转化大肠杆菌; 并在含有色氨酸的培养基中培养转化的大肠杆菌,使得由色氨酸衍生的吲哚通过加氧酶转化为吲哚氧化物,其中靛蓝通过吲哚氧化物(吲哚氧基)的二聚产生,靛玉红是通过吲哚氧基与靛红的组合产生的; 并在0.5〜2.0vvm的通气速度下,将含有5〜15mM色氨酸,0.5〜1.5%NaCl,0.2〜0.8%酵母提取物的培养基重组。