To obtain thermostable aspartate aminotransferase, the gene aspC from an extremely thermophilic bacterium, Thermus thermophilus HB8 was cloned, and its product was overexpressed in Escherichia coli BL21 (DE3) and Rosetta (DE3). The expression in Rosetta (DP3) was more efficient. The optimum reactive pH was 7, and the recombinant enzyme activity changed… (More)
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