Conversion of an obligate autotrophic bacteria to heterotrophic growth: expression of a heterogeneous phosphofructokinase gene in the chemolithotroph Acidithiobacillus thiooxidans |
| |
Authors: | Tian Ke Li Lin Jian Qun Liu Xiang Mei Liu Ying Zhang Chang Kai Yan Wang Ming |
| |
Institution: | (1) State Key Laboratory of Microbial Technology, Shandong University, Jinan, 250100, P.R. China |
| |
Abstract: | A plasmid pSDK-1 containing the Escherichia coli phosphofructokinase-1 gene (pfkA) was constructed, and transferred into Acidithiobacillus thiooxidans Tt-7 by conjugation. The pfkA gene from E. coli could be expressed in this obligately autotrophic bacterium but the enzyme activity (18 U g–1) was lower than that in E. coli (K12: 86 U g–1; DF1010 carrying plasmid pSDK-1: 97 U g–1). In the presence of glucose, the Tt-7 transconjugant consumed glucose leading to a better growth yield. |
| |
Keywords: | Acidithiobacillus thiooxidans conjugation expression phosphofructokinase |
本文献已被 PubMed SpringerLink 等数据库收录! |