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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...
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