【摘要】 来自肺炎克氏杆菌M5a1菌株的龙胆酸1,2双加氧酶(GDO,EC1.14.13),能够催化龙胆酸产生顺丁烯二酸单酰丙酮酸(MP).利用龙胆酸1,2双加氧酶基因工程菌以及MP被酸化时会转化成反丁烯二酸单酰丙酮酸的特性小量制备了纯度分别为97.7%以及96.4%的顺丁烯二酸单酰丙酮酸和反丁烯二酸单酰丙酮酸,为该化合物的制备提供了一条具有一定可行性的生产途径.更多还原

【Abstract】 Gentisate 1,2-dioxygenase (GDO,EC1.14.13) from Klebsiella pneumoniae M5a1 successfully converted gentisate to maleylpyruvate. This biotransformation was performed by using genetically engineered E.coli strain carrying a gene encoding gentisate 1,2-dioxygenase, and the maleylpyruvate synthesized by this enzyme attained a purity as high as 97.7%. Purity of fumarylpyruvate obtained by acidifying the resulting maleylpyruvate with meta-phosphoric acid was 96.4%. This study thus established a method which is suitable for the production of maleylpyruvate and fumarlpyruvate.更多还原