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. 2016 Sep 2;6:32644. doi: 10.1038/srep32644

Figure 2. Validation of the dual T7-tac promoter for 6PGDH screening in E. coli TOP10 and protein expression in E. coli BL21(DE3).

Figure 2

(a) The conceptual plasmid map of pET28a-Ptac-6pgdh. The DNA sequence of Ptac, lac operator, and RBS were shown as underlined, italic, and small, respectively. (b) SDS-PAGE analysis of 6PGDH expression in E. coli TOP10 and E. coli BL21(DE3). M, protein marker; Control, pET28a-Ptac; WT, pET28a-Ptac-6pgdh; P, purified 6PGDH. 6PGDH was indicated with an arrow.