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公开(公告)号:EP2573174A4
公开(公告)日:2013-11-20
申请号:EP10851775
申请日:2010-05-21
发明人: MAZUKA FUSUKE , FUKUSHIMA TAKAYOSHI , SUMIDA NAOMI , YANAI KOJI
IPC分类号: C12N15/09 , C12N1/15 , C12N1/19 , C12N1/21 , C12N5/10 , C12N9/02 , C12N15/00 , C12P19/56 , C12P21/02
CPC分类号: C12P19/56 , C12N9/0006 , C12Y101/01184
摘要: Disclosed are a ketoreductase mutant which can be used for an efficient production of daunorubicin derivatives, a DNA encoding the mutant, a transformant prepared by introducing the DNA thereinto to produce a daunorubicin derivative, and a process of producing a daunorubicin derivative using the transformant. The ketoreductase mutant has an amino acid sequence in which one amino acid residue or two or more amino acid residues selected from the group consisting of amino acids located at positions corresponding to the 42nd, 149th, 153rd, 270th, and 306th amino acids in the amino acid sequence of a ketoreductase (EvaE) from a chlororemomycin-producing bacterium (Amycolatopsis orientalis) are substituted with another amino acid residues.
摘要翻译: 公开了可用于有效生产柔红霉素衍生物的酮还原酶突变体,编码突变体的DNA,通过将DNA导入其中以制备柔红霉素衍生物而制备的转化体,以及使用该转化体生产柔红霉素衍生物的方法。 酮还原酶突变体具有这样的氨基酸序列,其中一个氨基酸残基或两个或更多个氨基酸残基选自位于对应于氨基酸中第42位,第149位,第153位,第270位和第306位氨基酸的位置处的氨基酸 来自产氯绿霉素的细菌(Amycolatopsis orientalis)的酮还原酶(EvaE)的酸序列被另一个氨基酸残基取代。