Abstract:
The present invention relates to a recombinant strain producing 2,3-butanediol which comprises (a) an inactivated lactate dehydrogenase and (b) an inactivated sucrose regulator. According to the present invention, 2,3-butanediol is economically produced using a cheap carbon source in the present invention, and excellent 2,3-butanediol efficiency and productivity are obtained compared with a wild type.
Abstract:
본 발명은 알코올 디히드로제나아제(alcohol dehydrogenase) 1, 알코올디히드로제나아제 3 및 알코올 디히드로제나아제 5로 구성된 군으로부터 선택되는 하나이상의 알코올 디히드로제나아제를 불활성화시키는 단계를 포함하는 2,3-부탄다이올 제조용 효모의 제조방법에 관한 것이다. 본 발명은 화학공업에 유용한 기초가 될 플랫폼용 화합물인 2,3-부탄다이올 제조용 효모 제조방법, 2,3-부탄다이올 제조용 효모 및 2,3-부탄다이올을 제공할 수 있으며, 본 발명의 2,3-부탄다이올 제조용 효모는 야생형 균주와 비교하여 50-100배 향상된 우수한 2,3-부탄다이올 효율을 나타낸다.
Abstract:
PURPOSE: A method for preparing yeast for producing 2,3-butanediol is provided to produce 50 to 100 times more 2,3-butanediol than a wild strain. CONSTITUTION: A method for preparing yeast for producing 2,3-butanediol comprises the step of inactivating one or more kinds of alcohol dehydrogenase selected from among alcohol dehydrogenase 1, alcohol dehydrogenase 3, and alcohol dehydrogenase 5. The step is conducted by mutating a nucleotide sequence for coding alcohol dehydrogenase through substitution, insertion, deletion, or a combination thereof. The efficiency of the yeast for producing 2,3-butanediol is 50 to 100 times greater than that of a wild strain of yeast.
Abstract:
PURPOSE: A lactate dehydrogenase gene-deleted Enterobacter aerogenes is provided to highly prepare 2,3-butandiol and to be used as alternative energy. CONSTITUTION: A lactate dehydrogenase gene-deleted Enterobacter aerogenes has improved 2,3-butandiol productivity. A vector for removing the gene contains flanking sequence of lactate dehydrogenase gene and FRT-kanamyucin-FRT cassette. The vector is applied to the Enterobacter aerogenes. A method for preparing the Enterobacter aerogenes comprises: a step of transforming the vector to Enterobacter aerogenes to remove the lactate dehydrogenase gene by electroporation; and a step of selecting lactate dehydrogenase gene-deleted Enterobacter aerogenes.