会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 3. 发明申请
    • KETO GROUP INTRODUCING ENZYME, DNA CODING FOR THE SAME, AND PROCESS FOR PRODUCING KETOCAROTENOID
    • KETO集团介绍ENZYME,DNA编码及其生产方法KETOCAROTENOID
    • WO1996006172A1
    • 1996-02-29
    • PCT/JP1995001640
    • 1995-08-18
    • KIRIN BEER KABUSHIKI KAISHAKAJIWARA, SusumuMISAWA, NorihikoKONDO, Keiji
    • KIRIN BEER KABUSHIKI KAISHA
    • C12N15/53
    • C12N9/0004C12P7/26C12P23/00
    • A polypeptide having the enzymatic activity of converting the 4-methylene group of a beta -ionone compound into a keto group; a DNA containing the base sequence coding for the above polypeptide; another DNA which hybridizes with the above DNA and contains the base sequence coding for the above polypeptide; still another DNA which has been inserted into plasmid pHP51 and contains the base sequence coding for the above polypeptide; a recombinant vector containing the above DNA(s); a microbe having the above DNA(s) introduced thereinto; and a process for producing a ketocarotenoid which comprises culturing the above microbe in a medium and separating the formed ketocarotenoid from the product of culture. The introduction of the above DNAs as foreign genes into microbes, such as E. coli, followed by expression thereof makes it possible to impart to the microbes the capability of biosynthesis of astaxanthin, 4-ketozeaxanthin, canthaxanthin, echinenone and other ketocarotenoids. The use of such microbes makes it possible to mass-produce ketocarotenoids at reduced cost and labor.
    • 具有将β-戊酮化合物的4-亚甲基转化为酮基的酶活性的多肽; 含有编码上述多肽的碱基序列的DNA; 与上述DNA杂交并含有编码上述多肽的碱基序列的另一种DNA; 仍然是已经插入质粒pHP51并且含有编码上述多肽的碱基序列的另一个DNA; 含有上述DNA的重组载体; 将上述DNA引入其中的微生物; 以及生产酮类胡萝卜素的方法,其包括在培养基中培养上述微生物,并将所形成的酮类胡萝卜素与培养产物分离。 将上述DNA作为外源基因导入微生物,如大肠杆菌,随后进行表达,可以使微生物赋予虾青素,4-酮基黄豆素,角黄素,海参酮等酮类胡萝卜素的生物合成能力。 使用这样的微生物使得可以以降低的成本和劳动量大量生产酮类胡萝卜素。