申请人:Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo
公开号:US08008058B2
公开(公告)日:2011-08-30
An object of the present invention is to provide a novel ketose 3-epimerase, a process for producing the same, a DNA encoding the enzyme, a recombinant DNA and transformant comprising the DNA, and a process for producing a ketose by using the enzyme. The present invention solves the above objects by providing a ketose 3-epimerase which is obtainable from a microorganism of the genus Rhizobium, a process for producing the same, a DNA encoding the enzyme, a recombinant DNA and transformant comprising the DNA, and a process for converting D- or L-ketohexose into corresponding D- or L-ketohexose by epimerizing the hydroxyl group at the C-3 position of the D- or L-ketohexose; and D- or L-ketopentose into corresponding D- or L-ketopentose by epimerizing the hydroxyl group at the C-3 position of the D- or L-ketopentose; by using the enzyme.
本发明的目的是提供一种新型的酮糖3-表异构酶,一种生产该酶的方法,一种编码该酶的DNA,包含该DNA的重组DNA和转化体,以及使用该酶生产酮糖的方法。本发明通过提供从根瘤菌属微生物中获得的酮糖3-表异构酶,一种生产该酶的方法,一种编码该酶的DNA,包含该DNA的重组DNA和转化体,以及通过使用该酶将D-或L-酮己糖的C-3位的羟基表异构化为相应的D-或L-酮己糖;以及将D-或L-酮戊糖的C-3位的羟基表异构化为相应的D-或L-酮戊糖的方法,来实现上述目的。