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. 2014 Dec 12;14:681. doi: 10.1186/s12879-014-0681-2

Figure 2.

Figure 2

Cloning and over-expression of PlyAB1. (A) Cloning of plyAB1 into pET28a: 1) recombinant plasmid pET28a-plyAB1, 2) pET28a-plyAB1 digested with BamHI and Xhol, 3) PCR amplification of plyAB1. (B) The purified PlyAB1 protein after Ni+ affinity chromatography and filtration.