节点文献
D-乳酸合成阻断对肺炎克雷伯氏菌的1,3-丙二醇发酵的影响
Influence of blocking formation of D-lactic acid on 1,3-propanediol fermentation by Klebsiella pneumoniae
【摘要】 利用Red同源重组技术,快速敲除肺炎克雷伯氏菌中的编码D-乳酸脱氢酶的两个基因——ldhA和dld,获得KG1-1和KG1-2两个突变株,并研究了敲除编码D-乳酸脱氢酶基因丧失合成D-乳酸的KG1-1菌株的1,3-PD产量和菌体生长变化,实验结果表明乳酸合成缺失对现有工艺1,3-丙二醇发酵无影响。
【Abstract】 The impact of blocking D-lactate formation by direct knocking out the genes of D-lactic dehydrogenase in Klebsiella pneumoniae was investigated.The two genes of ldhA and dld were knocked out separately to construct two mutants of KG1-1 and KG1-2.The results showed that KG1-1 was a D-lactate deficient mutant,while its 1,3-PD production and cell growth were not influenced on the present technology.
【关键词】 肺炎克雷伯氏菌;
D-乳酸脱氢酶;
1,3-丙二醇;
Red同源重组;
【Key words】 Klebsiella pneumoniae; D-lactate dehydrogenase; 1,3-propanediol; Red recombination;
【Key words】 Klebsiella pneumoniae; D-lactate dehydrogenase; 1,3-propanediol; Red recombination;
- 【文献出处】 工业微生物 ,Industrial Microbiology , 编辑部邮箱 ,2014年04期
- 【分类号】TQ923
- 【被引频次】1